Avaya Configuring APPN User Manual

Configuring APPN Services

BayRS Version 13.0 0 Site Manager Software Version 7.00

Part No. 303511-A Rev 00 October 1998

4401 Great America Parkway 8 Federal Street Santa Clara, CA 95054 Billerica, MA 01821

and recomm endations in this docum ent are believed to be accurate and reliable, but are presented without express or implied warranty. U sers must take full respons ibility for their applications of any products specified in this do cum ent. The information in this document is proprietary to Bay Networks, Inc.

The software described in this document is furnished under a license agreement and may only be used in accordance with the te rms of that license. A summary of the Soft w are License is include d in this docum ent.

Trademarks

ACE, AFN, AN, BCN, BLN, BN, BNX, CN, FRE, LN, Optivity, PPX, and Bay Networks are registered trademar ks and Advanced Remote Node, ANH, ARN, ASN, BayRS, BaySecure, BayStack, BayStream, BCC, BCNX, BLNX, EZ Install, EZ Internetwork, EZ LAN, FN, IP AutoLearn, PathMan, RouterMan, SN, SPEX, Switch Node, System 5000, and the Bay Network s logo are trademarks of Bay Networks, Inc.

Microsoft , MS, MS-DOS, Win32, Windows, and Windows NT ar e registered trade m arks of Micro soft Corporation. All other trademarks and registered trademarks are the property of their respective owners .

Restricted Rights Legend

Use, duplication, or disclosure by the United States Government is subject to restrict ions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013.

Notwithstanding any other license agreement th at may pertain to, or accompany the delivery of, this computer software, the ri ghts of the Un ited States Gove rnment re garding its use, reproduction, and disclosure are as set forth in the Commercial Computer Software-Restricted Rights clause at FAR 52.227-19.

Statement of Conditions

In the interest of improving internal design, operational function, and/or reliability, Bay Networks, Inc. reserves the right to make changes to the products described in this document without notice.

Bay Networks, Inc. does not assume an y liability that may occur due to the use or applic ation of the product(s) or circuit layout(s) described herein.

Portions of the code in this software product may be Copyright © 1988, Regents of the University of California. All rights reserve d. Redistribution and use in source and binary forms of such portions are permitted, provided that the above copyright notice and this paragrap h are duplicated in all su ch forms and th at any docume ntation, adverti sing materials, and other materials related to such distribution and use acknowledge that such portions of the software were deve loped by th e U niversity of California, Berkeley. The nam e of the University may not be used to endorse or promote products derived from such portions of the software without specific prior written permission.

SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED “AS IS” AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIE D WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

In additi on, the program and information contained herein are li censed only pursuant to a license agreement that contains restrictions on use and disclosu re (that may incorporate by refer ence certain limitations and not ices imposed by thir d pa rt ie s).

303511-A Rev 00

Bay Networks, Inc. Software License Agreement

NOTICE: Please carefully read this license agreement before copying or using the accompanying software or instal ling the hardware unit with pre-enabled software (e ach of which is referred to as “Softw are” in this Agreement). BY COPYING OR USING THE SOFTWARE, YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT. THE TERMS EXPRESSED IN THIS AGREEMENT ARE THE ONLY TERMS UNDER WHICH BAY NETWORKS WILL PERMIT YOU TO USE THE SOFTWARE. If you do not accept these terms and conditions, return the product, unused and in the o riginal shipping container, within 30 days of purchas e to obtain a credit for the full purchase price.

1. License Grant. Bay Networks, Inc. (“Bay Networks”) gra nts the end user of the Software (“Lice nsee”) a personal, nonexcl usive, nontransferable license: a) to use the Software either on a single computer or, if applic able, on a singl e authori zed de vi ce ide ntified by host ID, fo r whi ch it was origi nal ly acq uired ; b) to cop y th e Softw ar e so le ly fo r bac kup purposes in support of authorized us e of the Software; and c) to us e and copy the associated user manual solely in support of authorized use of the Soft w are by Licensee. This li cense applies to the Software only and does not extend to Bay Networks Agent software or other Bay Networks softw are products. Bay Networks Agent software or other Bay Networks software products are licensed for use under the terms of the applicable Bay Networks, Inc. Software License Agreement that accompanies such software and upon payment by the end user of the applicable licen se fees for such software.

2. Restrictions on use; reservation of rights. The Software and user manuals are protect ed under copyright laws. Bay Networks and/or its licensors retain all title and ownership in both the Sof tware and user manuals, including any revis ions made by Bay Networks or its licensors. The copyright notice must be reproduced and included wi th any copy of any por tion of the Sof tw are or use r manua ls . Licens ee may not modif y, translate, dec ompi le , disas se mble , use for any compe ti ti v e an al ysis, r e v erse e ngi ne er , dis tr ib ute , o r c rea te der i vative work s f ro m the Softw are or u se r man ual s or any copy, in whole or in part. Except as expressly provided in this Agreement, Licensee may not copy or transfer the Softw are or user man uals, in whole or in part. Th e Software and user manuals embody Bay Networks’ and it s licenso rs’ confidential and proprietary intell ectual property. Licensee shall not sublicense, assign , or otherwise disclos e to any third party the Software, or any information about the operation, design, performance, or implementation of the Software and user manuals that is confidential to Bay Networ ks and its licensors; however, Licensee m ay grant permission to its consul tants, subcontractors, and agents to use the Software at Licensee’ s facility, provided they have agreed to use the Software only in accordance with the terms of th is license.

3. Limited warranty. Bay Networks warrants each item of Software, as delivered by Bay Network s and properly installed and operated on Bay Networks hardware or other equipment it is originally licensed for, to function substantially as described in i ts accompanying user manual during its warranty period, wh ich begins on the date Softwar e is fi r st shi pped to Licen see . If any it em of Soft war e fai ls to so func ti on du ring i ts warr anty pe ri od, as t he so le remedy Bay Ne tworks will at its discretion provide a suitable fix, pat ch, or workaround for the problem tha t m ay be included in a future Software release. Bay Networks further warrants to Licensee that the media on which the Softwar e is provided will be fr ee from defects in materials and workmanship under normal use for a period of 90 days from the date Software is first shipped to Licensee. Bay Networks will replace defective media at no charge if it is returned to Bay Netw orks during the warranty per iod along with proof of the date of shipmen t. This warran ty does not apply i f the media has been damaged as a result of acci dent, misuse, or abuse. The Licensee assumes all re sponsibility for selection of the Software to achieve Licensee’s intended results and for the installation, use, and results obtained from the Software. Bay Networks does not warrant a) that the functions cont ained in the software w ill meet the Licensee ’s requirements, b) that the Software will operate in the har dw are or software combinations that the Licensee may select, c) that th e operation of the Software will be uninterrupted or error free, or d) that all defects in the operati on of the Software wi ll be corrected. Bay Networks is not ob ligated to remedy any Software defect that cannot be repro duced with the latest Software release. Thes e warranties do not apply to the Sof tware if it has been (i) altered, except by Bay Networks or in accordance with its instructions; (ii) used in conjunction with another vendor’s product, resulting in the defect; or (iii) damaged by im proper environm ent, abuse, misuse, accident, or neglige nce. THE FOREGOING WARRANTIES AND LIMITATIONS ARE EXCLUSIVE REMEDIES AND ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Licensee is responsible for the security of

303511-A Rev 00

iii

its own data and information and for maint aining adequate procedures apart from the Software to reconstruct lost or altered files, data, or programs.

4. Limitati on of liabili ty. IN NO EVENT WILL BAY NETWORKS OR ITS LICENSORS BE LIABLE FOR ANY COST OF SUBSTITUTE PROCUREMENT; SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ; OR ANY DAMAGES RESULTING FROM INACCURATE OR LOST DAT A OR LOSS OF USE OR PROFITS ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE, EVEN IF BAY NETWORKS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL THE LIABILITY OF BAY NETWORKS RELATING TO THE SOFTWARE OR THIS AGREEMENT EXCEED THE PRICE PAID TO BAY NETW ORKS FOR THE SOFTWARE LICENSE.

5. Governmen t L i c en s ees. This provisio n applies to all Software and documentation acquired directly or indirectly by or on behalf of the United States Government. The Software and documentation are commercial products, licensed on the open market at market prices, and were developed entirely at private expense and without the use of any U.S. Government funds. The license to the U.S. Government is granted only with restricte d rights, and use, duplication, or disclos ure by the U.S. Gover n m ent is subject to the restrictions set forth in subparagraph (c)(1) of the Commercial Computer So ftware––Restricted Rights clause of FAR 52.227-19 and the limitations set out in this license for civilian agencies , and subparagraph (c) (1)(ii) of the Rights in Technical Data and Computer Software clause of DFARS

252.227-7013, for agencies of t he D e partment of Defense or their suc cessors, whiche ver is applicable.

6. Use of Software in the European Communi ty. This prov ision applies to all Software acquired for use within the European Comm unity. If Lice nsee uses the Software within a countr y in the European Community, the Softwar e Directive enacted by the Counc il of European Communities Directive dated 14 May, 1991, w ill apply to the examination of the Software to facilitate interoperability. License e agrees to notify Bay Networks of any such intended examination of the Software and may procure support and assistance from Bay Networ ks.

7. Term and termination. This license is effective until terminated; however, all of the restrictions with respect to Bay Networks’ copyright in the Software and user manuals will cease being effective at the date of expiration of the Bay Networks copyright; those r estrictions relating to use and disclosure of Bay N etworks’ confidential information shall continue in effect. Licensee may terminate this license at any time. The license will automatically terminate if Licensee fails to co m ply with any of the terms and conditions of the license. Upon terminat ion for any reason, Licensee will immediately destroy or return to Bay Networks the Software, user manuals, and all copies. Bay Networks is not liable to Licensee for damages in any form solely by reason of the termination of this license.

8. Export and Re-export. Licensee agrees not to export, direct ly or indirectly, the Software or related technical data or information without first obtaining any required export licenses or other governmental approvals. Without limiting the fore going, Licensee, on behalf of itself and its subsidiaries and affiliates, agrees that i t will not, without first obtaining all export licenses and appro vals required by the U.S. Government: (i) export , re-export, transfer, or diver t any such Sof tware or technical data, or any direct product thereof, to any coun try to which such exports or re-exports are rest ricted or embargoed under United States ex port control laws a nd regulations, or to any national or resident of such rest ricted or embargoed countries; or (ii) provide the Software or related technical data or inf ormation to any military end user or for any military end use, including the design, develop ment, or production of any chemical, nuclear, or biological weapons.

9. General. If any provision of this Agreement is held to be invalid or unenforceable by a court of competent jurisdiction, the remainder of the provisions of this Agreement shall remain in full force and effect. This Agreement will be governed by the laws of the state of California.

Should you have any questions concerning this Agreement, contact Bay Networks, Inc., 440 1 G reat America Parkway, P.O. Box 58185, Santa Clara, Californi a 95054-8185.

LICENSEE ACKNOW LEDGES THAT LICENSEE HAS READ THIS AGREEMENT, UNDERSTANDS IT, AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS. LICENSEE FUR THER AGREES THAT THIS AGREEMENT IS THE ENTIRE AND EXCLUSIVE AGREEMENT BETWEEN BAY NETWORKS AND LICENSEE, WHICH SUPERSEDES ALL PRIOR ORAL AND WRITTEN AGREEMENTS AND COMMUNICATIONS BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER OF THIS AGREEMENT. NO DIFFERENT OR ADDITIONAL TERMS WILL BE ENFORCEABLE AGAINST BAY NETWORKS UNLESS BAY NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT , INCLUDING AN EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT.

303511-A Rev 00

Preface

Before You Begin ............................................................................................................. xiii

Text Conventions ..... ......................................................... ...............................................xiv

Acronyms .........................................................................................................................xvi

Bay Networks Technical Publications .............................................................................xvii

How to Get Help ............................................................................................................xviii

Chapter 1 Advanced Peer-to-Peer Networking Overview

APPN Networking Overview .......................................................................................... 1-2

APPN Node Types ..........................................................................................................1-2

Network Nodes ........................................................................................................ 1-3

End Nodes ................................. ....................................................................... ......1-3

Low-Entry Networking Nodes .......................................... ....... ..... ....... .. .......... ....... .1-3

Control Points and Logical Units ....................................................................................1-5

Dependent Logical Unit Requester and Server ..............................................................1-6

lnterfaces, Ports, and Link Stations ................................................................................1-8

Interfaces .................................................................................................................1-9

Ports ......................................................................................................................... 1-9

Link Stations ............................................................................................................. 1-9

Connection Networks .................................................................................................. 1 -10

Intermediate Session Routing .....................................................................................1-12

Packet Segmentation and Reassembly .................................................................1-13

Adaptive Pacing .....................................................................................................1-13

High Performance Routing ...........................................................................................1 -14

Rapid Transport Protocol ................................................................................1-16

Non-Disruptive Path Switch ing ........................................................................1-16

End-to-End Error Recovery .............................................................................1 -17

End-to-End Flow and Congestion Control .......................................................1-17

303511-A Rev 00

Automatic Network Routing ....................................................................................1 -18

Fast Packet Switching ......................................................................................1-18

Session Transpar e n cy ................................................................. ....................1-18

Source Routing ................................................................................................ 1-18

APPN Services ............................................................................................................ 1 -19

Session Services ..................................................................................................1-19

Directory Services .................................................................................................1-20

Topology a nd Routing Services .............................................................................1-20

Configuration Services ..........................................................................................1-21

Management Services ..........................................................................................1-21

For More Inform ation About APPN ...............................................................................1-22

Chapter 2 Enabling APPN Services

Using the Parameter Descriptions .................................................................................. 2-1

Enabling APPN over LLC2 Interfaces ............................................................................ 2-2

Enabling APPN over LLC2 Interfaces Using SRB .........................................................2-7

Enabling APPN Interfaces over SDLC .........................................................................2-12

Chapter 3 Editing APPN Parameters

Using the Parameter Descriptions .................................................................................. 3-1

Accessing APP N Parameters ........ ....................................................................... ..........3-2

Editing APPN Global Parameters ...................................................................................3-3

APPN Global Advanced Parameters ....................................................................... 3-5

Editing APPN lnterfaces a nd Ports ..............................................................................3-15

Deleting APPN Interfaces ..................................................................................... 3 -17

Editing APPN Ports ............................................................................................... 3 -17

Deleting APPN Ports .............................................................................................3-19

Adding Ports to an APPN Interface .......................................................................3-20

Editing APPN Advanced Port Parameters ............................................................. 3 -23

Editing APPN Adjacent Link Stations ...........................................................................3-35

Deleting Adjacent Link Stations ............................................................................3 -42

Adding Adjacent Link Stations ...............................................................................3-43

Editing Ad vanced Adjacent Link Station Paramete rs .............................................3 -49

303511-A Re v 00

Editing APPN Connection Networks .............................................................................3-57

Adding APPN Connection Networks .....................................................................3-59

Deleting APPN Connection Networks ....................................................................3-60

Editing APPN Connection Network Ports ...............................................................3-61

Adding APPN Connection Network Ports .............................................................3-62

Deleting APPN Connection Network Port s ............................................................ 3 -63

Editing APPN Advanced Connection Network Parameters ....................................3-63

Editing APPN Directory Entry Parameters ................................................................... 3 -68

Adding APPN LU Names to Directory Services .....................................................3-71

Deleting APPN Directory Entires ...........................................................................3-74

Appendix A APPN Base and Optional Function Sets

Appendix B APPN Default Settings

Index

303511-A Rev 00

vii

Figures

Figure 1-1. APPN Network with Dif ferent Node Types ..............................................1-4

Figure 1-2. CP-CP and LU-LU Session s ........ ............................................................1-5

Figure 1-3. DLUR and DLUS in an APPN Network ....................................................1-7

Figure 1-4. Interface, Port, and Link Station Relationship .......................................... 1-8

Figure 1-5. Sample APPN Connection Network .......................................................1 -11

Figure 1-6. Nonadjacent LU-LU Session Through an Intermedia te Node . ..............1-12

Figure 1-7. APPN ISR Routing Functions in SNA Architecture ................................1-13

Figure 1-8. APPN HPR Routing Functions in SNA Architecture ..............................1 -15

Figure 1-9. HPR RTP Connection Supporting APPN Sessions ...............................1-16

Figure 1-10. HPR ANR Routing and Packet Handling Operations .............................1-19

Figure 2-1. Source Route Encapsulation Dialog Box .................................................2-3

Figure 2-2. APPN Local Node Name Configuratio n Window .....................................2-3

Figure 2-3. APPN/FR Conf igu ration Window .............................................................2-5

Figure 2-4. Adjacent Link Station Dialog Box .............................................................2-6

Figure 2-5. Source Route Encapsulation Dialog Box .................................................2-7

Figure 2-6. Source Routing Global Parameters Window ............................................2-8

Figure 2-7. Edit SR Interface Window ......................................................................2-10

Figure2-8. APPN Virtual Ring Number C onfiguration Window ...............................2-11

Figure 2-9. SDLC Line Parameters Window ............................................................ 2 -13

Figure 2-10. Select Protocols Window ....................................................................... 2 -17

Figure 2-11. APPN Local Node Name Configuratio n Window ...................................2-17

Figure 2-12. APPN SDLC Address Configuratio n Window ........................................2-18

Figure 2-13. Adjacent Link Station Dialog Box ...........................................................2-19

Figure 3-1. Configuration Manager Window ..............................................................3-2

Figure 3-2. Edit APPN Global Parameters Window ...................................................3-3

Figure 3-3. Advanced APPN Global Parameters Window ..........................................3-6

Figure 3-4. APPN Interface List Window .................................................................. 3 -16

Figure 3-5. APPN Port List Window .........................................................................3-18

Figure 3-6. APPN/FR Por t Configuration Window ....................................................3-20

303511-A Rev 00

Figure 3-7. APPN Port Windo w ...................................... ..........................................3-24

Figure 3-8. APPN Adjacent Link Station List Window ..............................................3 -35

Figure 3-9. APPN Adjacent Link Station Port Configuration Window .......................3-43

Figure 3-10. APPN Adjacent Link Station Configuration Window ..............................3-44

Figure 3-11. APPN Adjacent Link Station Advanced Configuration Window .............3-50

Figure 3-12. APPN Connection Network List Window ...............................................3-58

Figure 3-13. Connection N etwork Configuration Window ..........................................3-59

Figure 3-14. APPN Connection Network Port List Window ........................................3-61

Figure 3-15. Connection Network Port Configuration Window ...................................3-62

Figure 3-16. APPN Connect io n Network Advan ce d Parameters Window ..................3-64

Figure 3-17. APPN Directory Entry List Window ........................................................3-69

Figure 3-18. Directory Entry Configuration Window ...................................................3 -71

303511-A Re v 00

Tables

Table 3-1. Link Activation Limit Default Values ......................................................3-27

Table A-1. APPN Base Function Sets .....................................................................A-1

Table A-2. APPN Optional Function Sets ................................................................ A-4

Table B-1. APPN Global and Advanced Global Parameters ...................................B-1

Table B-2. APPN Interface and Port Parameters .................................................... B-2

Table B-3. APPN Adjacent Link Station Parameters ............................................... B-4

Table B-4. APPN C o nne ction Networks and Port Parameters ................................ B-5

Table B-5. APPN Directory Services Parameters ...................................................B-6

303511-A Rev 00

This guide describes Adva nced Peer-to-Peer Networking (APPN) se rvices and what you do to start and customize APPN services on a Bay Networks® router.

Before You Begin

Before using this guide, you must complete the following procedure s. For a new router:

• Install the router (see the installation guide that came with your router).

• Connect the router to the network and create a pilot configuration file (see

Quick-Starting Routers, Configuring BayStack Remote Access, or Connecti ng ASN Routers to a Network).

Preface

303511-A Rev 00

Make sure tha t you are running the latest version of Bay Networks BayRS Site Manager sof tware. For information about upgrading BayRS and Site Manager, see the upgr ading guide for your version of B ayRS.

™

and

xiii

Configu ring APPN Service s

Text Conventions

This guide use s the following text conventions:

angle brackets (< >) Indicate that you choose the text to enter based on the

description inside the brackets. Do not type the brackets when entering the command. Example: If the command syntax is:

bold text

<ip_address>

ping ping 192.32.10.12

Indicates text tha t you need to enter and command

, you enter:

names and options. Example: Enter

Example: Use the

show ip {alerts | routes

command.

dinfo

}

braces ({}) Indicate required elements in syntax descriptions

where there is more than one option. You must choose only one of the options. Do not type the braces when entering the command. Example: If the command syntax is:

, you must enter either:

show ip {alerts | routes show ip alerts or show ip routes

}

brackets ([ ]) Indicate optional elements in syntax descriptions. Do

not type the brackets when entering the command. Example: If the command syntax is:

, you can enter either:

show ip interfaces [-alerts show ip interfaces

]

show ip interfaces -alerts

xiv

ellipsis points (. . . ) Indicate that you repeat the last element of the

comman d as need ed . Example: If the command syntax is:

ethernet/2/1 ethernet/2/1

parameter> <value>

and as many parameter-value pairs as

] . . .

, you enter

needed.

303511-A Re v 00

Preface

italic text Indicates file and directory names, new terms, book

titles, and variables in command syntax descriptions. Where a variable is two or more words, the words are connected by an underscore. Example: If the command syntax is:

show at <

valid_route

valid_route>

is one va riable and you subs titu te one value

for it.

screen text Indicates system output , fo r exa mple, prompts and

system messages. Example:

Set Ba y Netw orks Tr ap Mo nito r Fil ters

separator ( > ) Shows menu paths.

Example: Protocol s > IP identifies the IP option on the Protocols menu.

vertical line (

) Separates choices for command keywords and

arguments. Enter only one of the choices. Do not type the vertical line when entering the command. Example: If the command syntax is:

show ip {alerts | rou tes } show ip alerts

show ip routes

, you enter either:

, but not both.

303511-A Rev 00

Configu ring APPN Service s

Acron yms

ANR Automatic Network Rout ing APPN Advanced Peer-to-Peer Networking COS class of se rvice CP control point DLC data link control DLCI data link connection ide ntifier DLSw data link switching DLUR dependent logical unit requester DLUS dependent logical unit server DS directory serv ices DSPU down stream physical unit EN e nd node EP entry point

xvi

FDDI Fiber Distributed Data Interface FQPCID f ully qualifie d procedure correlation ident ifier GDS general data stream HPR High Performance Routing IP Internet Protocol ISR intermediate session routing LAN local area network LEN low-entry networking LLC logical link control LU logical unit MAC media access c ontrol MDS multiple domain support MIB Management Information Base NCP Network Control Program

303511-A Re v 00

Preface

NN network node NNS network node server PCID procedure correlation identifier PU physical unit RSCV route selection control vector RTP Rapid Transport Protocol SAP service access point SATF shared access transport facility SDLC Synchronous Data Link Control SNA Systems Network Architecture SNMP Simple Network Management Protocol SRB source routing bridge SSCP system services contr ol point TG transmission group TPF transmission pri ority field VRN virtual routing node VTAM Vir tual T ecommunications Access Method XID exchange identifi cation

Bay Netwo rks Technical Publicati o ns

You can now print Bay Networks technical manuals and release notes free, directly from the Int ernet. Go to support.bayn etworks.com/libr ary/tpubs/. Fi nd the Bay Networks product for which you need doc umenta tion. Then locate the specific category and model or version for your hardwa re or software product. Using Adobe Acrobat Reader, you can open the manuals and release notes, search for the sections you need, and print them on most standard printers. You can download Acrobat Reader free from the Adobe Systems Web site, www.adobe.com.

303511-A Rev 00

xvii

Configu ring APPN Service s

You can purchase Bay Networks documentation sets, CDs, and selected technic al publications through the Bay Networks Collateral Catalog. The catalog is located on the World Wide Web at support.bayne tworks.com/catalog.html and is divided into sections arran ged alphabetically:

• The “CD RO Ms” section lists available CDs.

• The “Guides/Books” section lists books on technical topics.

• The “Technical Manuals” section lists available printed documentation sets. Make a note of the part num bers and prices of the items that you want to order.

Use the “Marketing Collateral Catalog description” link to place an order and to print the order form.

How to Get Help

For product assista nce, support contracts, or information about educational services, go to the following URL:

http://www.baynetworks.com/corporate/contacts/

xviii

Or telephone the Bay Networks Technical Solutions Center at: 800-2LANWAN

303511-A Re v 00

Chapter 1

Advanced Peer-to-Peer Networking Overview

IBM Advanced Peer-to-Peer Netw or king (A PP N ) architecture concepts include:

• APPN node types

• Control points and logical units

• Dependent logical unit requester and server

• APPN interfaces, ports, and link stations

• Connection networks

303511-A Rev 00

• Intermediate session routing

• High performance ro utin g

• APPN services Review these concepts if you a re responsible for configuring APPN on Bay

Networks routers in your netw ork. If you are already familiar with A PPN concepts, go directly to Chapter 2

for information on starti ng APPN on a router.

1-1

Configu ring APPN Service s

APPN Networkin g Overview

APPN is an archit ectural extension of IBM Systems Network Architectur e ( SN A). As participan ts in an SNA network, APPN nodes use distributed network services for dynamic routing , connecti on, topolog y, and directory information, simplifying network definition and maintenance.

Bay Networks routers participate as APPN network nodes in IBM SNA netw ork environments (with or without the presence of an IBM mainframe c omputer) and communicate with adjacent network nodes, end nodes, and low-entry ne tworking nodes. APPN runs on al l Bay Netw orks r outer platfor ms using lo cal and wid e area network facilities, as follows:

• LLC2 media, including Ethernet, token ring, and frame relay

• LLC2 using Source Routing Bridge (SRB) encapsulation formats over Ethernet, FDDI, SMDS, frame relay, and Point-to-Point (PPP) protocols

• SDLC links in point-to-point and multipoint c onfigurations

The Bay Networks APPN implementation complies with Ve rsion 2 of the IBM APPN Network Node specification, with advanced optional APPN function sets.

APPN Node Type s

1-2

APPN supports the following node types:

• Network nodes

• End nodes

• Low-entry networking nodes

303511-A Re v 00

Network Nodes

Network nodes (NNs) pro vide routing and networking services to othe r network nodes and end nodes. These services include locating network resources, calculating route s, and routing sessions. NNs use conf igured or dynamic control-point- to-control-point (CP-C P) sessions with adjacent nodes to manage, communicate, and exchange network topology and resour ce inf ormation. Any adjacent node that does not support control point sessions (such a s a low-entry networking node) can not participate in this exchange and must rely on static definit ions. An NN that provides control point services to end nodes is called a network node server (NNS).

End Nodes

End nodes (ENs) ha ve contr ol points tha t allo w them to re gist er and share network information (using CP-CP sessions) with the NNS. End nodes provide APPN services to local users and applications and can ope rate independently in sim ple network configurations. In most configurations, end nodes a re application hosts and workstations tha t register their resources with their network node server.

Advanced Peer-to-Peer Networking Overview

Low-Entry Networking Nodes

Low-entry ne tworking nodes (LENs) are the simplest type of node in an APPN network. LEN nodes communicate with each other as adjacent peers.

LENs do not use control point se ssions an d cannot e xchange r esource inf ormation with an NN. Therefore, the resource information for LENs is preconfigur ed and supported at the NN. LENs typically include personal computers and workstations.

Figure 1-1

303511-A Rev 00

illustrates a simple APPN networ k with the three APPN node types.

1-3

Configu ring APPN Service s

Low-entry networking

node (LEN)

APPN network node

(NN)

AS/400 end node

(EN)

Low-entry networking

node (LEN)

APN0001A

Figure 1-1. APPN Network with Different Node Types

1-4

303511-A Re v 00

Control Points and Logical Units

APPN uses control points (CPs) to manage node s and network resources by establishing CP-CP sessions between nodes. All CP-CP sessions use logical unit (LU) 6.2 sessions.

Advanced Peer-to-Peer Networking Overview

During a CP-CP session (Figure 1-2 information. Network nodes use CP-CP sessions to keep track of the network topology and directo ry information. Adjacent end nodes use CP-CP sessions to register resources and to request directory searc hes from the NNS.

Network node

APPN.A

CP-CP, LU-LU sessions

Figure 1-2. CP-CP and LU-LU Sessions

Network node

), adjacent nodes exchang e network

End node

APPN.C

APPN.B

CP-CP, LU-LU sessions

APN0002A

303511-A Rev 00

In Figure 1-2, APPN.C registers its local resources with APPN.B, and sends requests to APPN.B for information abou t the network and its resour ces . APPN.B functions as a n NNS for APPN.C.

APPN.B has CP-CP sessions with both APPN.A and APPN.C. In this example, APPN.A and APPN.B exchange network topology and cooperate in directory searches.

1-5

Configu ring APPN Service s

Dependent Logical Unit Requester and Server

APPN’s Dependent Logical Unit Requester (DLUR) supports LU type 0, 1, 2, 3 and LU6.2 dependent logical units within APPN. In contrast to the base APPN architecture, which uses independent LUs for LU-to-LU sessions, dependent LUs need a mainframe-based system services control point (SSCP) to establish and manage LU-to-LU sessions. DLUR allo ws these dependent LUs to use APPN networks by encapsulating the SSCP control flows within the APPN LU 6.2 sessions. The AP PN network routes the dependent LU-LU data flows.

DLUR works with the dependent LU server (DLUS) component of the virtual telecommunications a ccess method (VTAM) to provide a path for SSCP flows between VTAM and dependent LUs across an arbitrary APPN backbone network. The DLUR node serves as a point of connection for PU2.0 devices (such as 3270-type devices) to attach to an APPN backbone.

The DLUR and DLUS components in an APPN network allow the SSCP and the PU2.0 device to exchange control flows across the APPN backbone. DLUR and DLUS form a tunne l (called a CP-SVR pipe) that allows the SSCP at the DLUS side of the pipe to send SNA control flows to the PU2.0 device at the DLUR side of the pipe. The CP-SVR pipe is a pair of LU6.2 sessions that encapsulate the SSCP control flows.

1-6

Figure 1-3

illustrates the DLUR and DLUS components in APPN.

303511-A Re v 00

Advanced Peer-to-Peer Networking Overview

SSCP sessions

(encapsulated in

CP-SVR pipe

PU2.0

LU-LU sessions

(natively routed by

APPN network)

APPN network node

with DLUR

Figure 1-3. DLUR and DLUS in an APPN Network

Typically, in a large network, multip le DLUS nodes serv e many DLUR nodes distributed across the APPN backbone. A DLUR node can establish pipes with seve ral DLUS nodes, altho ugh a single PU2.0 dev ice can recei v e traffic from only one of them, because the device is only controlled by a single SSCP.

CP-SVR pipe

VTAM

with DLUS

APPN

backbone

VTAM

APN0003A

303511-A Rev 00

When the SSCP and the PU2.0 device excha nge control flows, BINDs establish the path that the LU-LU session traf fic uses through the network. Since the BIND flows independe ntly of the CP-SVR pipe, the LU-LU traffic can take a different path through the network ( the DLUS calculates a route using the topology database and class of service [COS] definitions). Refer to the “ APPN Services” section in this chapter for information on the topology database and COS definitions.

1-7

Configu ring APPN Service s

lnterfaces, Ports, and Link Stations

APPN configurat ions comprise interfaces, ports, an d link stations. Figure 1-4 shows ho w interfaces, ports, and li nk stat ions in a simple APPN network relate.

In this guide, the term “interface” has the same meaning as data link

Note:

control (DLC) in IBM publicatio ns.

APPN.NNA

Interface E51,LLC2,DLC00001

PORT0001

Link Station 1

Link Station 2

Link Station 3

Figure 1-4. Interface, Port, and Link Station Relationship

APPN.ENA

APPN.ENB

APPN.LENC

APN0004A

1-8

303511-A Re v 00

Interfaces

Ports

Advanced Peer-to-Peer Networking Overview

Interfaces provide data link control (DLC) processes to ensure reliable deli v ery of information between adjacent stations using a specific data link protocol, such as LLC or SDLC.

Each APPN interface can support one or more ports. A system-assigned DLC number (su ch as DLC00008 ) identifies APPN interfaces

on Bay Networks network nodes. For informatio n on adding and enabling APPN interfaces on Bay Networks

network nodes, refer to Chapter 2.

A port provides a unique acc ess point (such as a MAC/SAP address pair ) used by the local Bay Networks network node. A port in an APPN network ha s a DLC process and a set of configurable parameters.

Link Stations

A link station is a logical connection between adjacent nodes. Link stations use ports to create this conne cti on. Multiple link stations can exist on a single port, and multiple link stati ons can exist between the same two nodes. You can configure a link st ation e ntry, or APPN creates it dynamicall y when a re mote node initiates a connect ion.

Note:

adjacent link stations to communicate. Wi thin APPN, a link ref ers to a logical connection between tw o nodes. The term tra nsmission group ( TG) is also used throughout this manual and has the same meaning as link.

Link stations ha ve a set of configurable paramet ers, such as:

• Link station name and the name of the adjacent node

• Adjacent link station role: primary, secondary, or ne gotiable

• Adjacent link station definitions, such as MAC and SAP addresses

303511-A Rev 00

The term link often refers to the physical components that enable two

1-9

Configu ring APPN Service s

Connection Netw o rks

APPN end nodes on a share d access tr ansport facility (SATF), such as a token ring network, are directly connected to each other; they can communicate with each other without having to route traffic through an intermediate net wor k node. However, these end node s still require definitions to other nodes and the nodes must be accessible over CP-CP sessions. A connection network (CN) simplifies APPN configurations by reducing the number of connections that you m ust configure between nodes on an SATF.

When two nodes on the same SATF exist on the same connection network, these nodes are unaware that they have a direct conne ction to each other; the NNS, acting as an APPN vi rtual r outing node (VRN), c alcula tes a rou te bet ween the t wo end nodes so that they can communicate directly. For the end nodes to communicate with each other over a connection network, the end nodes require a connection to the VRN and a connection to the NNS.

Figure 1-5

such as that betwee n EN2 and EN3, may use resou rces at the networ k node ( NN1) to establish sessions with each other.

illustrates a sample connec tion network. This connection net work,

1-10

303511-A Re v 00

Advanced Peer-to-Peer Networking Overview

EN2 EN3

Traffic

SATF

Virtual Routing

Node

303511-A Rev 00

NN1 EN4

APN0005A

Figure 1-5. Sample APPN Connection Network

1-11

Configu ring APPN Service s

Intermediate Session Routing

Intermediate sess ion routing (ISR) provides a reli abl e, connection-oriented, LU-LU session path between nonadja cent APPN nodes . I SR sessi on connectors (SCs) and a session connection manager (SCM) forward sessions through the intermediate network node (Figure 1-6

At session endpoints, the LU, with control point services, establishes a session with a session partner and route s session data back and forth with the partner LU. INTERMEDIATE network nodes do not control the LU endpoints, and LU services cannot be invoked on these nodes. ISR forwards session data to the next node along the session path.

Intermediate

LU-A to LU-C

Session

Network Node B

NNB

End Node C

LU-C

Network Node A

LU-a

ISR Services

LU-A to LU-C

Session

Figure 1-6. Nonadjacent LU-LU Session Through an Intermediate Node

In Figure 1-6, LU-A and LU-C are nonadjacent session partners. ISR at NNB forwards session data between the nonadjacent nodes, LU-A and LU-C. NNB creates a session connec tor (SC) for each session passing through it.

Figure 1-7

illustrates ISR funct ion placement in the SNA layered architecture. Routing takes place at the SNA Layer 4, called the Transmission Control layer. Layer 4 performs flow co ntrol operations, specifically segmentation and reassembly, and pacing.

1-12

APN0006A

303511-A Re v 00

Advanced Peer-to-Peer Networking Overview

APPN

End Node

Applicaton

6 5 4

Logical Unit (LU)

Connection Oriented Logical Link

Transport Connection

APPN

Network Node

6 5 4

LU-LU Session

Application Data

Logical Unit (LU)

Session Connector

Connection Oriented Logical Link

Transport Connection

APPN

End Node

Applicaton

Figure 1-7. APPN ISR Ro ut in g Function s in SN A A rchite ct ure

6 5

Transmission Control

Flow Control

-Adaptive Pacing

-Segmenting/

Reassembly

APN0007A

Packet Segmentation and Reassembly

T o m aximize network perf ormance, ISR sends t he la rge st pack et size a llo wab le on each network interface that you configure for APPN. Intermediate nodes, when necessary, segment and reassemble packets of different packet sizes. The Max RU Size for ISR Sessions parameter sets the maxim um p ack et size fo r y our AP PN configuration.

Adaptive Pacing

ISR’ s Ada pti ve Pa cing controls d ata f lo w a nd congesti on b y managing t he number of messages the network node receives during a session. To prevent memory consumption, APPN use s “pacing windows” to control the maximum number of incoming messages. During network activit y, this pacing window changes dynamically, allowing the receiving node to adjust the rate at which data flows into its buffers.

303511-A Rev 00

1-13

Configu ring APPN Service s

To specify the maximum size of the adaptive pacing window, configure the ISR Receiv e Pacing Window parameter.

High Performance Routing

APPN’s high performance routing (HPR) increases data routing performance and reliability. HPR allows high-speed forw arding in intermediate nodes at the Data Link Control laye r (Layer 2) of SNA, operating much faster than the intermediate session routing (ISR) bas e component in APPN. HPR consumes fewer network resources (memory and control pr ocessor) by

• Minimizing storage and processing activities in intermediate nodes

• Reducing the amount of error recovery on individual lines

• Implementing nondisruptive path switching function that reroutes se ssions

around failed links or nodes

HPR uses the Rapid Transport Protocol (RTP) and Automatic Network Routing (ANR). RTP also supports adaptive rate bas ed (ARB) congestion control.

1-14

Figure 1-8

the SNA Data Link Control layer. Layer 2 performs reliable, sequential delivery, selective retransmission, and nondisruptive rerouting using RTP, as described in this section.

illustrates HPR in the SNA layered architecture. Routing takes place at

303511-A Re v 00

Advanced Peer-to-Peer Networking Overview

RTP Endpoint (End Node or

Network Node) 7

Application Application

6 5

3 2

Transport-Oriented LLC

Logical Unit (LU)

Connectionless LLC

ANR Router Node

(Network Node)

6 5

3 2

Session

Logical Unit (LU)

Connectionless (ANR) Routing with Priority

RTP Endpoint

(End Node or

Network Node)

Figure 1-8. APPN HPR Routing Functions in SNA Architecture

6 5

Data-Link Control

Reliable.

Sequential Delivery Selective Retransmission Nondisruptive Rerouting

APN0008A

303511-A Rev 00

1-15

Configu ring APPN Service s

Rapid Transport Protocol

RTP is a connection-oriente d, f ull-duplex protocol tha t supports data in highspeed networks at APPN NN endpoints. HPR uses RTP connections to transport LU-LU and CP-CP tr affic. A single RTP connection allows traffic from multiple APPN sessions (requesting the same cla ss of service) to share the same logical “pipe.” This conserves network resources by mi nimizing the role of intermediate NNs in the path, and by reducing error rec overy and flow control operations.

Figure 1-9

endpoint nodes over a logical pipe .

illustrates an RTP connection supporting multiple sessions between

Multiple

Sessions

Endpoint Node

APN0009A

Endpoint Node

Multiple

Sessions

RTP Connection over Logical Pipe

Intermediate Node

Figure 1-9. HPR RTP Connection Supporting APPN Sessions

RTP functions include:

• Non-disruptive path switching

• End-to-end error recovery

• End-to-end flow and congestion control

Non-Disruptive Path Switching

The HPR non-disruptive path switch dynamically reroutes RTP connections around failed links or nodes. If a path fails, the RTP component at the NN endpoint of the logical link c alculates a new path based on the desired class of service and transmiss ion priority (if it exist s). RTP per forms the switching transparently so tha t the session is unaware that rerouting is taking place. Non-disruptive path switching forwards and reverses traffic to follow different routes through the networ k, and also recovers traffic that was lost at the time of failure.

1-16

303511-A Re v 00

Advanced Peer-to-Peer Networking Overview

End-to-End Error Recovery

End-to-end error recovery enables APPN NN en dpoints to recovery lost traffic. HPR endpoint NNs a lways perform end-to-end recovery . Howev er, Site Manager allows you to sp ecify ba se APPN l ink-le v el e rror r ecov e ry, where error recov ery i s done on every link, consuming more network resources.

High-speed links gener ally have lo w error rates. Therefore, link-level

Note:

recove ry may not be necess ary in the higher speed HPR configurat ions.

When link lev el recovery is turned off and an error is detected, the packet is discarded, resulting in a gap in the stream of byte s over the R TP connection. When the R TP connection endpoint NN detects the gap in the incoming byte stream, it informs the sender to begi n retransmit ting from the first b yte afte r this point in the stream. RTP supports selective retransmission of parts of the byte stream, when the RTP endpoint requests a range of bytes for retransmission.

End-to-End Flow and Congestion Control

303511-A Rev 00

Operating at t he NN sending and receiving endpoints of an RTP connection, HPR uses a p reve ntative m echanism called adaptive rate-based (ARB) congestion control. ARB monitors, predicts, a nd regulates the flow of traffic into the network as conditions change. When the networ k approaches congestion (increased delay, decreased throughput), ARB reduces the input traffic rate so that a recipient endpoint NN can adequately handle the traffic.

With multiple RTP connections o ver a single link, the ARB function regulates the flow of traffic in all connections. This provide s fairness to all connections.

With multiple SNA sessions over a single RTP connection, HPR’s adaptive session-level pacing maintains fairness among the sessions. This prevents one session from unfairly consuming network resources, compared to other sessions on the R TP connection.

1-17

Configu ring APPN Service s

Automatic Network Routing

Automatic network rout ing (ANR) minimizes storage and processing requirements for routing packets through intermediate nodes. ANR functions include:

• Fast packet switching

• Session transparency

• Source routing

Fast Packet Switching

ANR operates at the Data Link Control layer of the SNA archite cture. Operating at a lower layer tha n APPN ISR improv es packet switching perfor mance in the intermediate nodes. Functions typically performed at the intermediate node, such as link-level recovery, segmentation, flow and congestion control, are perfo rme d at the RTP connection endpoints.

Session Transpare n cy

Intermediate node s are not aware of the SNA sessions or the RTP connections established acro ss the nodes. This eliminates the need for storin g routing tables and consuming resources (memory an d buffers) at the intermediate nodes.

1-18

Source Routing

ANR uses a source routing algorithm. ANR carri es the routing information in the network header of each packet. For each activated link, an ANR label is dynamically assigne d to the pack et. As a packet traverses the network, each node strips of f the information it uses in the packet header before forwarding it, allowing the next node to easily find its routing information at a fixed pla ce in the header. This allows faster switching through a node. Additionally, there is no ANR restriction on the number of hops in the network.

Figure 1-10

illustrates ho w ANR routes pa cke ts ov er an APPN HPR network. The intermediate network node strips the first routing label (A1) from the network header before forwarding the pack e t on the A1 link. C5 represents the endpoint in the last HPR node.

303511-A Re v 00

Advanced Peer-to-Peer Networking Overview

RTP Connection

A1 C5

Sessions Sessions

Sending Endpoint Node

NN1

Figure 1-10. HPR ANR Routing and Packet Handling Operations

APPN Services

The APPN services on the NN include:

• Session services

• Directory services

• Topology and routing services

• Configuration services

• Management services

NN2

Intermediate Node

A1 C5 FF Data C5 FF Data

A1 Stripped off at NN2 Before Delivery to NN3

Receiving Endpoint Node

NN3

APN0010A

Session Services

Session services (SS) generate s unique session identifiers, acti vates and deactivates CP-CP sessions to exchange network informatio n, an d assists LUs in initiating and activating L U-LU sessions. Session services:

• Invokes directory servic es to locate a partner LU

• Invokes topology and routing se rvices (TRS) to calculate the optimal route

between the origin and destina tion node

• Inf o r ms man a g emen t servi c es (MS ) a b o ut newl y ac t iva t e d or deac tivated

CP-CP sessions

303511-A Rev 00

1-19

Configu ring APPN Service s

Directory Services

Directory services (DS) manages the directory database and locates network resources through out an APPN networ k. To loc ate network resources, direc tory services at e ach node collects r esource information an d maintains the inform at ion in a local directory database. Through a CP-CP session betwee n an APPN network node and an adjacent APPN end node, the APPN network node registers (by end node request) the APPN end node’s resources in its local directory database.

An APPN network node maintains database entrie s for

• Local resources (LUs and the CP)

• End node resources within the APPN network node’ s domain

• End node or network node resources outside the APPN network node’s

domain (called cross-domain resources)

An APPN end node or low-entry networ king node maintains database entries for

• Local resources

• Local resources on adjacent nodes tha t have peer-to-peer communication

sessions (without the presence of an APPN network node or control point, in the case of a peer-to-peer end node and low-entry networking node)

Topology and Routing Services

T opol ogy an d routing servi ces (TRS) reside s in e ver y APPN networ k node and, in lesser form, in every APPN end node and low-entry networking node. In APPN network nodes, TRS collects and exchanges informatio n on other net work nodes, and the links between them. For LU-LU sess ions, TRS provides the best route between any t wo LUs. In APPN end nodes and low-entry networking nodes, TRS collects information on links and adjacent nodes.

In APPN network nodes, TRS creates and maintai ns the class-of-service (COS) database and a copy of the network topology database. The network topology database contains information on APPN network node connections to other network nodes and connection networks. (A connection networ k is a method of defining an APPN node attachment to a sha red-access transport facility, reducing intermediate node routing and definition requi rements.)

1-20

303511-A Re v 00

In APPN end nodes, TRS creates and maintains the COS database, and maintains the local topology database (also maintained by TRS at the network node). The local topology data base contains information on connect ions involving the local end nodes: end node-to-end node , end node-to- network node, and end node-to-virtual routing node.

For LU-LU sessions, TRS computes the optimal route through an APPN network between the two nodes on which the LUs reside. A route in an APPN network is an ordered sequence of nodes and transmission groups (TGs) that represents a path from an origin to a destination, called a Route Selection Control Vector (RSCV). In APPN end nodes, TRS uses the local database to select possible transmission groups from the end node to an adjacent node. In APPN network nodes, TRS uses the informati on provi ded by the two end nodes, togethe r with the information in the netw ork node’s COS and topology database, to select a route.

Configuration Services

Configura tion services (CS) manages links to adjacent APPN nodes . The APPN node operator faci lity (NOF) initializes configuration services through Site Manager.

Advanced Peer-to-Peer Networking Overview

The basic configur ation functions are:

• Node definition

• Interfaces

• Ports

• Adjacent link stations

• Connection networks

• Directory services Refer to Chapter 3, “Editing APPN Parameters,” for detailed information on

configuring APPN nodes.

Management Services

Management service s (MS) cont rols and m onito rs the node ’s resources. If an error condition occur s, APPN rec ei v es or gener ates e ve nt mes sages abo ut resour ces and conditions. F or information on the APPN event messa ges, refer to Event Messages

for Routers.

303511-A Rev 00

1-21

Configu ring APPN Service s

For More Information About APPN

For more information about APPN, IBM SNA, and related subjects, refer to the following I BM publications:

• IBM Systems Network Arc hitecture: LU6.2 Reference: Peer Protoc ols

(SC31-6808)

• IBM Systems Network Architecture: APPN Architecture Reference

(SC30-3422)

• IBM Systems Network Architecture: Management Services

(SC30-3346)

• IBM APPN Architecture and Product Implementation Tutorial (GG24-3669)

• IBM AS/400 Advanced Peer-to- Peer Networking

(GG24-3287)

• IBM Systems Network Arc hitecture: Technical Overview

(GC30-3073)

• IBM Systems Network Architecture: Concepts and Products

(GC30-3072)

1-22

• IBM System Network Arc hitecture: Introduction to Sessions between Logic al

Units (GC20-1869)

303511-A Re v 00

Chapter 2

Enabling APPN Services

This chapter describes how to enable APPN services on:

• Logical Link Control 2 (LLC2) media, including Ethernet, token ring, and

frame relay

• LLC2 media using Source Routing Bridge (SRB) encapsulation formats over

Ethernet, FDDI, SMDS, frame relay, and Point-to-Point Protocol( PPP)

• Synchronous Data Link Control (SDLC) links in point-to-point and

multipoint netwo rks

This chapter assumes that you have read Configuring and Managing Routers with Site Manager and that you have:

1. Opened a configuration file

2. Specified router hardware if this a local mode configura tion file

3. Selected the connector on which you are enabling APPN

Using the Parameter Descriptions

Each APPN parameter description provides information about default settings, valid parameter options, the parameter function, inst ructions for setting the parameter, and the Management Information Base (MIB) object ID.

The Technician Interface allows you to modify parameters by issuing

commit

modifying parameters using Site Manager. For more information about using the T echnician Interface to access the MIB, refer to Using Technician Interface Software.

303511-A Rev 00

commands with the MIB object ID. This process is equivalent to

set

and

2-1

Configu ring APPN Service s

Caution:

The Technician Interface does not verify tha t the value you enter fo r

a parameter is valid. Entering an invalid value can corrupt your configur ation.

Enabling APPN over LLC2 Interfaces

When you configure APPN on LLC2 interfaces, such as Ethernet and token ring, the Configuration Manager requests media access control ( MAC) and service access point (SAP) addresses. On synchronous interfaces where you are configuring APPN over frame relay, the Configuration Manager requests a data link connection identifier (DLCI) address and a SAP address.

T o e nable APPN on Etherne t, toke n ring , or B ay Networ ks synchronous interfaces using frame relay:

Select APPN from the Select Protocols win dow.

This menu appears after you select either a link or net module connector that requires a wide area network (WAN) circuit. The Configuration Manager automatically sel ects the LLC2 option.

Click on OK.

For frame relay and Ethernet networks, the “Use Source Route Encapsulation? ” dialog box appears (Figure 2-1

2-2

Click on Cancel if you are configuring standard LLC over Ethernet, or if

you are configuring frame relay using the RFC 1490 routing standard.

303511-A Re v 00

Enabli n g APPN Ser vices

Figure 2-1. Source Route Encapsulation Dialog Box

To configure Bay Networks SRB over Ethernet or frame relay using the RFC 1490 bridging standard , cl ic k on OK and refer to the next section, “Enabling APPN over LLC2 Interfaces Using SRB,” for information on the additional screens that appea r.

The APPN Local Node Name Configuration window appears (Figure 2-2

Figure 2-2. APPN Local No de Name Conf ig uration Wi ndow

Specify the Local Node Name parameter, as follows:

303511-A Rev 00

2-3

Configu ring APPN Service s

Parameter: Local Node Name

Default: None

Options: An y valid name with up to 17 characters in the format

<NETID>.<CPNAME>; NETID

characters followed by a period, and with up to 8 characters. (Do not enter the angle brackets; these are a conve ntion used to indicate a substitutable variable.)

Function: The Local Node Name parameter identifies the unique name of the

network and the Bay Networks router node name.

Instructions: Enter the node name by fi rs t specifying up to 8 characters in the network

ID name, type a period, then enter a control point name with up to 8 characters. You must use uppercase c haracters only a nd the first character must be non-numeric. Blank spaces (leading, trailing, and embedded) are not allowe d in the node name. For example, NETWORKA.SYSTEMA is a valid entry for the Local Node Na me parameter.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.4

Click on OK to add the local node name.

For frame relay conf igurations, the APPN/FR Configuration window appears (Figure 2-3

). If you are configuri ng standard LLC over Ethernet, the Configura tion Manager displays the APPN Configuration windo w where you specify a MAC addr ess instead of the DLCI address.

is the global network name with up to 8

CPNAME

is the control point name

2-4

303511-A Re v 00

Figure 2-3. APPN/FR Configuration Window

Specify the DLCI Address (for frame relay only), MAC Address, and

SAP parameters, as follows:

Enabli n g APPN Ser vices

Parameter: DLCI Address

Default: None

Options: Valid range depends on the frame relay address length as follows:

Address Length Range

2 bytes 16-1007 3 bytes 1024-64511 4 bytes 131072-8257535

Function: The DLCI is the frame relay PVC identification number. The frame relay

network uses the DLCI to direct basic data flow.

Instructions: Enter a decimal number within the valid range.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

303511-A Rev 00

2-5

Configu ring APPN Service s

Parameter: SAP (hex)

Default: None

Options: Any unique SAP 2-digit hexadecimal value, usually 04 with APPN.

Function: Specifies a SAP address that lets multiple applications and protocol

entities in a single comput er share a MAC address.

Instructions: Enter a 2-digit hexadecimal value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

Parameter : MAC Address

Default: None

Options: Any unique 48-bit 12-digit hexa decimal MAC-level address

Function: Specifies a unique MAC -l evel address for this port.

Instructions: Enter a 12-digit hexadecimal MAC-level address in most significant bit

(MSB) noncanonical format, regardless of the media.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

Click on OK.

The Adjacent Link Station dialog box ap pear s (Figur e 2-4

Figure 2-4. Adjacent Link Station Dialog Box

2-6

303511-A Re v 00

Enabli n g APPN Ser vices

Click on OK to configure APPN adjacent link station parameters now

For informatio n on configuring addjacent link stations, go to the section in

Chapter 3

Click on Cancel.

entitled “Editing APPN Adjacent Link Stations.”

Go to Chapter 3

for information about configuring APPN.

Enabling APPN over LLC2 Interfaces Using SRB

If you are configur ing LLC2 interfaces such as Ethernet, FDDI, SMDS, frame relay, and PPP, you can use SRB encapsulation formats. F or Ethernet (Bay Networks proprieta ry SRB over Ethernet) and frame relay (RFC1490 Bridging Standard), start at the Source Route Encapsulation dialog box (Figure 2-5 proceed as follo ws:

) and

303511-A Rev 00

Figure 2-5. Source Route Encapsulation Dialog Box

Click on OK.

The Source Routing Global Parameters window appears (Figure 2-6

2-7

Configu ring APPN Service s

Figure 2-6. Source Routing Global Parameters Window

Edit the SR Bridge Internal LAN ID and the SR Bridge ID parameters in

the Source Routi ng Gl o bal Para meters window.

These are man dat o ry par am et ers that you must specify before you can proceed.

2-8

303511-A Re v 00

Parameter: SR Bridge Internal LAN ID

Default: 0x1

Range: 0x1 to 0x0fff

Function: Specifies this bridge’s internal LAN ID.

Instructions: Assign an internal LAN ID that is unique among all other internal LAN

IDs and ring IDs in the network.

MIB Object ID: 1.3.6.1.4.1.18.3.5.1.1. 2.1. 4

Parameter: SR Bridge ID

Default: 0x1

Range: 0x1 to 0x0f

Function: Specifies this bridge’s ID and identifies the Bay Networks source ro uting

bridges in the network.

Instructions: Assign the same value to all Bay Networ ks source routing bridges in the

network (unless two bridges operate in parallel). The SR bridge ID must be unique among any other third -par ty bridge IDs in the network.

Enabli n g APPN Ser vices

MIB Object ID: 1.3.6.1.4.1.18.3.5.1.1. 2.1. 5

For details about co nfiguring the source rout ing parameters on this window, refer to Configuring Bridging Services.

Click on OK.

The Edit SR Interface window appears (Figure 2-7

303511-A Rev 00

2-9

Configu ring APPN Service s

Figure 2-7. Edit SR Interface Window

Edit the Source Routing Ring Number parameter in the Edit SR

Interface window.

This is the only parameter that you must specify before you can proceed.

2-10

303511-A Re v 00

Parameter: Source Routing Ring Number

Default: 0x0

Range: 0x0 to 0x0fff

Function: Identifies the ring number (ring ID) of this sour ce routing circuit.

Instructions: Assign a ring number (ring ID) to thi s source r outin g circuit that is uniq ue

among any other ring IDs, group LAN IDs, or internal LAN IDs in the network.

MIB Object ID: 1.3.6.1.4.1.18.3.5.1.1. 2.1. 6

For details on ho w to configure the source routing parameters on this window, refer to Configuring Bridging Se rvices.

Click on OK.

Enabli n g APPN Ser vices

The APPN Virtual Ring Number Configuration window appears (Figure 2-8

Figure 2-8. APPN Virt u a l Ri ng Nu m ber Configuration Window

Edit the Virt ual Ring Number parameter, as follows:

303511-A Rev 00

2-11

Configu ring APPN Service s

Parameter: Virtual Ring Number (hex)

Default: None

Range: 1 to 4095

Function: Specifies the unique SRB ring number to be used by APPN. It must be

unique in the SRB network. This means that the Virtual Ring Number must be different not only from the ring IDs specified in the SRB configura tion, b ut di f ferent also from othe r Bay Netw orks route rs ru nning APPN on LLC2/SRB media.

Instructions: Specify the unique LLC ring number in the range 1 to 4095.

MIB Object ID: 1.3.6.1.4.1.18.3.5.1.6. 2.25

Click on OK.

If this is the first interface for which you are configuring APPN, the APPN Local Node Name Configurat ion window appears (Figure 2-2 the first interface for which you are configuring APPN, the APPN Configura tion window for your specific network appears. Refer to these figures and the ste ps that follow them to complete the APPN conf iguration.

). If this is not

Enabling APPN Interfaces over SDLC

To configure APPN on synchronous interfaces (COM1, COM2, etc.) using the SDLC protocol:

Select SDL C from the WAN protocol s window.

The Configuration Manager displays the SDLC Line Parameters window (Figure 2-9

2-12

303511-A Re v 00

Figure 2-9. SDLC Line Paramet ers W in dow

Enabli n g APPN Ser vices

303511-A Rev 00

Edit the Cloc k Source, In terna l Clock Speed, Sync Line Coding, Cable

Type, and RTS Enable paramet ers, as follows:

2-13

Configu ring APPN Service s

Parameter : Cloc k Source

Default: Internal

Options: External

Function: Identifies whether the rout er provides clocking (INTERNAL) or receives

clocking (EXTERN AL) from the other device. The paramet er specifies the origin of the synchronous timing signals. If you set this parameter to Internal, this router supplies the required timing signa ls. If you set this parameter to External , an external network device supplies the require d timing signals.

Use this parameter when connecting the SNA equipment directly to the router . Either the route r or the SN A equipment can define the speed of the SDLC link. You must configure one devi ce to internal clocking, and the other devic e to external clocking.

Instructions: For direct connec tion to a contr ol unit, such as an IBM 3174, set to

Internal. For connection to a modem, set to External. For direct connection to a n IBM 3745, eith er t he route r or the IBM 3745 c an pro vide the clock source. If the IBM 3745 does not provide clocking, set to Internal.

Internal

MIB Object ID: 1.3.6.1.4.1.18.3.4.5.1. 13

2-14

303511-A Re v 00

Enabli n g APPN Ser vices

Parameter : Inte rnal Cl oc k Sp eed

Default: 19200 KB

Options: 1200 B

19200 B 125 KB | 230 KB| 420 KB | 625 KB | 833 KB |

1.25 MB | 2.5 MB | 5 MB

Function: Sets the clock speed of an internally supplied clock when Clock Source is

set to Internal. Attached devices must be capable of operating at the specifie d speed. Some of the more common allowed speeds for IBM products are as follows:

-- An IBM 3274 with a n V.24/RS-232 interface suppo rt s up to 960 0 bps.

-- An IBM 3274 with a V.35 interface supports up to 64 Kb/s.

-- An IBM 3174 with a V.24/RS-232 interface supports up to 19200 bps.

-- An IBM 3174 with a V.35 interface and running Licensed Internal

Instructions: Click on Values and set the clock speed for the internal cloc k to the

desired data transmi ssion rate across the synchronous line. This parameter is unavailable when Clock Source is set to External.

MIB Object ID: 1.3.6.1.4.1.18.3.4.5.1. 14

2400 B | 4800 B | 7200 B | 9600 B

32000 B

Some support speeds up to 19200 bps.

Code-C supports up to 256 Kb/s.

38400 B | 56 KB | 64 KB

303511-A Rev 00

2-15

Configu ring APPN Service s

Parameter: Sync Line Coding

Default: NRZ

Options: NRZ

Function: Sets the same line coding value f or all de vi ces attac hed to the same SDLC

Instructions: Select NRZ or NRZI. NRZI Mark is not generally used for SDLC.

MIB Object ID: 1.3.6.1.4.1.18.3.4.5.1. 88

Parameter: Cable Type

NRZI | NRZI Mark

link. You can change the value of this parameter to match the line coding of a device at the other end of the line.

This parameter i s re le v ant on ly for the AN and ASN routers , and the Octa l Sync module. Other Bay Networks router platforms use NRZ encoding.

NRZ -- Indicates Non-Return to Zero encoding. NRZI -- Indicates Non-Return to Zero Inverted encoding. NRZI Mark -- Indicates Non-Return to Zero Inverted Mark encoding.

Default: RS232

Options: Null

Function: Spec ifies the cabl e int erfa ce to the network.

Instructions: Click on Values and select the installed cable interface type.

MIB Object ID: 1.3.6.1.4.1.18.3.4.5.1. 83

Parameter: RTS Enable

Default: Disable

Options: Enable

Function: Controls the toggling of the Request to Send (RTS) signal on the

Instructions: Click on Values and select Enabled or Disabled. For manual dial modems

MIB Object ID: 1.3.6.1.4.1.18.3.4.5.1. 16

2-16

RS232 | RS422 | V35 | X21

Disable

interface .

(2-wire), set this para meter to Enabled. For leased modems (4-wire), set this parameter to Disabled.

303511-A Re v 00

Enabli n g APPN Ser vices

Click on OK.

The Select Protocols window appears (Figure 2-10

Figure 2-10. Select Prot ocols Window

Select APPN and click on OK.

If this is the first interface for which you are configuring APPN, the APPN Local Node Name Configurat ion window appears (Figure 2-11

). Otherwise,

the APPN SDLC Address Configuration window appears (Figure 2-12).

Figure 2-11. APPN Lo cal No de Name Conf ig uration Wi ndow

Specify the Local Node Name parameter.

303511-A Rev 00

2-17

Configu ring APPN Service s

If this is not the first APPN interface on this router, omit this step and go to Step 7.

Parameter: Local Node Name

Default: None

Options: Any valid name with up to 17 characters in the format

<NETID>.<CPNAME>; NETID

characters followed by a period, and with up to 8 characters. (Do not enter the angle brackets; these are a conve ntion used to indicate a substitutable variable.)

Function: The Local Node Name parameter identifies the unique name of the

network and the Bay Networks router node name.

Instructions: Enter the node name by fi rs t specifying up to 8 characters in the network

ID name; type a period; and then enter a control point name with up to 8 characters. You must use uppercase c haracters only a nd the first character must be non-numeric. Blank spaces (leading, trailing, and embedded) are not allowe d in the node name. For example, NETWORKA.SYSTEMA is a valid entry for the Local Node Na me parameter.

is the global network name with up to 8

CPNAME

is the control point name

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.4

Click on OK to add the local node name.

The APPN SDLC Address Configuration window appears (Figure 2-12

Figure 2-12. APPN SDLC Address Configuration Window

2-18

303511-A Re v 00

Specify the SDLC address for the interface, as follows:

Parameter: SDLC Address (hex)

Default: None

Options: Any unique 2-digit hexadecimal SDLC- level address

Function: Specifies a unique SDLC address for this circuit.

Instructions: Enter a 2-digit hexadecimal address.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

Click on OK.

Enabli n g APPN Ser vices

The Adjacent Link Station dialog box ap pear s (Figur e 2-13

Figure 2-13. Adjacent Link Station Dialog Box

To configure APPN adjacent link station parameters now, go to the section in Chapter 3 entitled “Editing APPN Adjacent Link Stations.”

Click on Cancel.

Go to the beginning of Chapter 3 for information about configuri ng APPN.

303511-A Rev 00

2-19

Chapter 3

Editing APPN Parameters

Once you successfully enable an APPN interface on the router, you can edit parameters and customize APPN servic es.

This chapter d escribes how to use the Configurati on Manage r to edit the following parameters:

• Global and advanced

• Interface and port

• Adjacent link station

• Connection network

• Directory services The instructions a ssume you ha v e already added one or more interfaces to a router

configuration file that you now want to edit for APPN. (Refer to Configuring and Managing Routers wit h Site Manager to learn how to add interfaces to the configura tion file.)

Using the Parameter Descriptions

The Technician Interface allows you to modify parameters by issuing set and commit commands with the MIB object ID. This process is equivalent to modifying parameters using Site Manager. For more information about using the T echnician Interface to access the MIB, refer to Using Technician Interface Software.

303511-A Rev 00

3-1

Configu ring APPN Service s

Caution:

The Technician Interface does not verify tha t the value you enter fo r

a parameter is valid. Entering an invalid value can corrupt your configur ation.

Accessing APPN Parameters

You can access all APPN operational pa rameters from the Conf igura tion Manager window (Figure 3-1). (Refer to Configuring and Managing Routers with Site Manager f or instructions about how to acc ess this window.)

Figure 3-1. Configuration Manager Window

3-2

303511-A Re v 00

Editing APPN Global Parameters

To edit APPN global parameters from Configuration Manager window

(Figure 3-1) and proceed as follows

Select Protocols > APPN > Global.

Editing APPN Parameters

The Edit APPN Global Parameters window appears (Figure 3-2)

Edit the parameters you want to change.

Use the descriptions tha t follow as a guide.

Click on OK to save you r change s and exit the window, or sele ct

Advanced to further customize APPN global paramet er settings.

Figure 3-2. Edit APPN Glo bal Param et ers Window

303511-A Rev 00

3-3

Configu ring APPN Service s

Parameter: APPN Enable/Disable

Default: Enable

Options: Enable

Disable

Function: Globally enables or disables APPN on the router.

Disable -- Forces every APPN interface existing on the node into the “down” (inope rative) state.

Enable -- Reinitia lizes every APPN interface existing on the node; each interface maintains the most recent setting of its own Interface Enable/ Disable parameter.

Instructions: Select Disable to for ce e very AP PN interface existing on t he no de into the

“down” (inope rative) state. Select Enable to globally reinitialize all APPN interfaces configured on

the node; each interf ace will maintain the most recent setting of its o wn Interface E nab le /Disable parameter.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.2

Parameter: Local Node Name

Default: None

Options: Any valid name with up to 17 characters in the format

<NETID>.<CPNAME>; NETID

characters followed by a period, and with up to 8 characters

Function: The Local Node Name parameter identifies the unique name of the

network and the Bay Networks router node name.

Instructions: Specify up to 8 characters for t he n etwork ID name; follow with a period;

then type a control point name with up to 8 characters. You must use uppercase characters only and the first charact er must be non-numeric. Blank spaces (leading, trailing, and embedded) are not allo wed in the node name. For example, NETWORKA.SYSTEMA is a valid entry for the Local Node Name parameter.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.4

3-4

is the global network name with up to 8

CPNAME

is the control point name

303511-A Re v 00

Parameter: Local ID Block

Default: None

Options: A valid string of 3 hexadecimal digits

Function: A unique hexadecimal v alue identifies the APPN product in this NN. The

number is the first 3 digits of the node identification.

Instructions: Accept the displayed value or enter 3 hexadecimal digits in this field.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.6

Parameter: Local ID Number

Default: None

Options: A valid string of 5 hexadecimal digits (0 to 9, A,B,C,D,E,F)

Function: Identifies the local APPN netwo rk node and is present i n APPN al erts and

exchange identifications (XIDs). These 5 digits are combined with the 3-digit local ID block to form a unique XID node identification. The APPN network node a nd the adjacent node exchange node identifications when establishing a connection.

Editing APPN Parameters

Instructions: Enter 5 hexadecimal digits.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.7

APPN Global Advanced Parameters

To edit the APPN global advanced parameters from the Edit APPN Global Parameters window (Figure 3-2):

Click on Advanced.

The Advanced APPN Global Parameters window appears (Figure 3-3 window conta ins general parameters associated with APPN directory services, intermediate session routing, and topology and routing services.

303511-A Rev 00

). This

3-5

Configu ring APPN Service s

Figure 3-3. Advanced APPN Global Parameters Window

Click on each pa ram e ter value that you want to ch an ge; then edit the

displayed value .

Use the parameter descriptions that follow as a guide.

Click on OK to save you r change s and exit the window .

3-6

303511-A Re v 00

Parameter: Route Addition Resist ance

Default: 128

Range: 0 to 255

Function: Indicates the relative desirability of using this network node for

intermediate session routing (ISR) when multiple paths exist.

Instructions: Enter a value in the range 0 to 255. The lower the value, the more

desirable the node becomes for ISR.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.21

Parameter: Endpoint Session RSCV Storage

Default: Enable

Options: Enable

Disable

Function: When enabled, stores route selection control vector information used by

the network node if it is the endpoint (origin or destination) node in the route. This parameter is useful when you are using the Technician Interface to debug logged APPN events and statistics. Refer to Using Technician Interface Scripts for information on using the show appn command.

Editing APPN Parameters

When enabled, this parameter consumes additional memory for e ach endpoint session.

Instructions: Select Enable to enable endpoint ses sion RSCV stor age. Select Dis able to

disable endpoint session RSCV storage.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.29

303511-A Rev 00

3-7

Configu ring APPN Service s

Parameter : Max Directory Entrie s

Default: 0

Options: A value of 0 indicates an unlimited number of entries; otherwise, any

positi ve numeric value

Function: Specifies the maximum number of entries that APPN stores in the

directory database at the net work node. The directory database stores information about network resources and their location in the APPN network.

Instructions: Enter a value large enough for the network being managed, or spec ify 0

for unlimited entries.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.32

Parameter : Max Cach ed Directo r y En tri es

Default: 100

Options: Any positive numeric value

Function: Spec ifies the maxi m u m num b er of cach e d direc tory en tri es that AP PN

stores in the local direc tory database at any one time. The caching can ultimately result in la rge local directory dat abase s that may include out-of-date resource entries. If the maximum number is reached and if all entries are in use, new entries to be cached will replace the oldest cache entries.

Instructions: Enter a value large enough for the network being managed. Incr ease the

current value if the oldest valid entries are being replaced on a regular basis.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.31

3-8

303511-A Re v 00

Parameter : Netwo rk Lo cate Timeout (in seconds)

Default: 60

Options: Specify 0 to indicate no timeouts

Function: Specifies the length of time (in seconds) before a network search times

out. The network search function locates network resources and controls the flow of search reque sts and replies throughout the networ k.

Instructions: Enter a positive time value in seconds. If directory services at the local

network node doe s not receive a search response at the completion of this timeout value , the search is terminated. When the loc al netw ork node receives the search response, the search is complete.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.33

Parameter: TRS Route Tree Cache Size

Default: 8

Range: 8 through 2147483674

Editing APPN Parameters

Function: Specifies the size of the topology and routing services (TRS) tree

database. The tree database all ows a network node to cache optimal rou tes from the local APPN node to other network nodes (tree caching).

Instructions: Enter a positive numeric value in the rang e 8 to 2147483674 to indi cate

the maximum number of routing trees to be stored in the database.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.34

Parameter: TRS Route Tree Cache Usage Limit

Default: 8

Range: 1 through 2147483674

Function: Specifies the maximum number of times a route tree will be used before

route selection se rvices (RSS) calculates a new route tree for that class of service (CO S).

Instructions: Enter any positive nume ri c val u e in the ra n ge 1 to 2 147483674.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.35

303511-A Rev 00

3-9

Configu ring APPN Service s

Parameter: Max NNs in Topology DB (0 = unlimited)

Default: 0

Options: Any positive number; specify 0 to indicate an unlimited number of

network nodes

Function: Specifies the maximum number o f networ k nodes (r outer s) in t he net work

topology database.

Instructions: Specify 0 to include all network nodes.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.36

Parameter: Max TGs in Topolo gy DB (0 = unlimited )

Default: 0

Options: Any valid positive numbe r; sp ec i f y 0 t o i nd icate an un limit ed num b e r of

transmission groups (TGs)

Function: Specifies the maximum number of TGs in the networ k topology database .

A TG represents a si ngle unidir ect ional conne ction (or link) to an adja cent link station.

Instructions: Specify 0 to include all TGs.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.37

Parameter: Max Number of ISR Sessions

Default: 1000

Range: 100 through 2147483674

Function: Specifies the maximum number of intermediate session routing (ISR)

sessions that the local ne twork node can support concurrently.

Instructions: Enter a value of 100 through 2147483674.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.38

3-10

303511-A Re v 00

Parameter : ISR C ong es tio n Th resh o ld

Default: 900

Options: Any positive numeric value less than the Max Number of ISR Sessions

parameter settin g

Function: Specifies the maximum number of ISR se ssion s before t he node conside rs

itself conge sted, causing it to di rect ne w se ssi ons a way. A network node is no longer congested when the number of ISR sessions drops to the setting of the ISR Decongestion Threshold parameter.

Instructions: Enter any positive numeric value less than t he se tting f or the Max Number

of ISR Sessions parameter. In most cases, a value equal to 90% of the Max Number of ISR Sessions parameter is a reasonable value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.39

Parameter : ISR D econgestion Thres ho ld

Default: 800

Options: Any positive numeric value less than the ISR Congestion Threshold

parameter settin g

Editing APPN Parameters

Function: Specifies the number of active ISR sessions that the local net work node

must drop to before it is no longer congested. A network node is congested when the number of ISR sessions reaches the ISR congestion threshold.

Instructions: Enter any positive nume ri c val u e that i s l e s s th a n th e curre n t I SR

Congestion Threshold parameter setting. In most cases, a value equal to 80% of the Max Number of ISR S ess ions parameter is a reas onable value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.40

303511-A Rev 00

3-11

Configu ring APPN Service s

Parameter: Max RU Size for ISR Sessions

Default: 4096

Range: 256 to 4096, inclusive

Function: Specifies the maximum request unit (RU) size for the segmentation and

reassembly of session and nons ession traff ic during the ISR sessions.

Instructions: Enter a positive number in the range 256 to 4096.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.41

Parameter : ISR R ece ive Pacin g Wind ow

Default: 7

Range: 1 to 63, inclusive

Function: Specifies the maximum number of messages tha t the network node can

receiv e in one wind o w during a n ISR se ssion. Pa cing windows control the number of messages to prevent memory consumption.

Instructions: Enter a positive number in the range 1 to 63. Entering higher values may

improve performance, but will consume more memory.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.42

Parameter: ISR Session RSCV Storage

Default: Enable

Options: Enable

Disable

Function: Enables or disables the storage of route selection contro l vectors (RSCVs)

during ISR sessions. This parameter is useful for debuggi ng. When enabled, it consumes additional memory for e ach ISR session.

The intermediate net work node use s RSCV information to obtain the next node and a tr ansmission group (TG) to the node along a route. The maximum number of APPN nodes and TGs a session can traverse is limited to the size of the RSCV.

Instructions: Select Enable to enable ISR session RSCV storage. Select Disable to

disable ISR se ssion RSCV storage.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.43

3-12

303511-A Re v 00

Parameter: DLUR Support Enable/Disable

Default: Disable

Options: Enable

Disable

Function: Enables or disables Dependent Logical Unit Requester (DLUR) support

at the networ k node. DLUR is an APPN c omponent tha t allows dependent logical units (LU type 0,1,2,3 and dependent LU6.2) within APPN.

Instructions: Click on Values and select Enable to start DLUR at the network node, or

select Disable to stop DLUR at the network node.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.45

Parameter: Default DLUS Name

Default: None

Options: Any valid name with up to 17 characters in the format

<NETID>.<NAME>; NETID

characters fol lowe d b y a period, and up to 8 characters

Editing APPN Parameters

is the unique network name with up to 8

is the control point na me with

NAME

Function: Specifies the fully qualified default name of the DLUS node that serves

the PU2.0 adjacencies configured on this node. APPN uses the default name when the DLUR Suppor t Enabl e/Disable paramete r is set to Enable, and when the DLUR Implicit LS Support parameter is set to Enable f or implicit link stations on the port.

Instructions: If the DLUR Support Enable/Disable parameter is set to Enable, type up

to 8 characters for the network ID; follow with a period, and then type a control point name with up to 8 characters. You must use uppercase characters only and the f irs t character must be non-numer ic. Blank spac es (leading, trailing, and e mbedded) are not allowed in the node name. For example, APPNNODE.DLUR is a va lid entry for this parameter.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.54

303511-A Rev 00

3-13

Configu ring APPN Service s

Parameter: Default Backup DLUS Name

Default: None

Options: Any valid name with up to 17 characters in the format

<NETID>.<NAME>; NETID

characters fol lowe d b y a period, and up to 8 characters

Function: Specifies the fully qualified default backup name of the DLUS node that

serves PU2.0 adjacencies configured on this node. APPN use s the default backup name when the DLUR Support Enable/Disable parameter is set to Enable, and when the DLUR Implicit LS Support parameter is set to Enable for implicit lin k stat ions on the port.

Instructions: If the DLUR Support Enable/Disable parameter is set to Enable, type up

to 8 characters for the network ID name; follow with a period, and then type a control point na me with u p to 8 char acters. You must use uppercase characters only and the f irs t character must be non-numer ic. Blank spac es (leading, trailing, and e mbedded) are not allowed in the node name. For example, APPNNODE.DLUR is a va lid entry for this parameter.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.55

is the unique network name with up to 8

is the control point na me with

NAME

Parameter: DLUR-DLUS RSCV Storage

Default: Enable

Options: Enable

Disable

Function: Enables or disables the storage of route selection contro l vectors (RSCVs)

during DLUR/DLUS sessions. This paramet er is useful for network monitoring and deb ugging. When enabled, it will consume additional memory for each DLUR/DLUS session. It is not used if the DLUR Support Enable/Disable parameter is set to Disable.

Instructions: Click on Values and select Ena ble to e nable DLUR -DLUS RSCV stor age.

Select Disable to disable DLUR-DLUS RSCV storage.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.44

3-14

303511-A Re v 00

Parameter : HPR Su pport

Default: Enable

Options: Enable

Function: Enables HPR on this node.

Instructions: Click on Values and select Enable or Disable.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.50

Parameter: HPR Path Switch Controller Support

Default: Disable

Options: Enable

Function: Enables this node as an HPR patch switch controller/initiator . This

parameter is available when the HPR Support parameter is set to Enable. Typically, you only set this parameter to Enable if your network node is a

mobile or wireless (satellite communicati ons) partner. The Enable setting prev ents unneeded path switch attempts b y the nonmobile partner.

Disable

Editing APPN Parameters

Instructions: Click on Values and select Enable or Disable.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.1.51

Editing APPN lnterfaces and Ports

To edit APPN Interface parameters, begin at the Configuration Manager window

303511-A Rev 00

(refer to Figure 3-1

Select Protocols > APPN > Interfaces.

The APPN Interface List window appears (Figure 3-4)

Edit those parameters you want to change, using the APPN conf igu ration

windows that appear.

) and proceed as follo ws:

3-15

Configu ring APPN Service s

Figure 3-4. APPN Interface List Window

3-16

Click on Apply to sa ve your changes.

Click on Done to exit the window.

To display and enable (or disable) the current port(s) on an interface, add additional ports to the interface, delete ports, or edit advanced port parameters, click on Ports.

303511-A Re v 00

Parameter: Interface Enable/Disable

Default: Enable

Options: Enable

Disable

Function: Enables or disables APPN routing on this interface.

Enable -- Initializes the selected APPN interface. You can also use the Enable setting to initia lize an existing APPN interface that you disabled earlier.

Disable -- Forces the APPN interfac e into the “down” (inoperative) state.

Instructions: Select Disable to disable APPN routing over this interface.

Select Enable to enable or reenable APPN routing over this inte rface.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.2.1.2

Deleting APPN Interfaces

To delete an interface from the APPN Interface List window (refer to Figure 3-4), select the interface, then click on Delete. The system software de letes th e interface entry from the APPN configuration.

Editing APPN Parameters

Editing APPN Ports

The APPN Interface List window (refer to Figure 3-4) allows you to enable or disable APPN ports, add and delete APPN ports on existing interfaces, and edit advanced port parameters. From the APPN Interface List window,

Select Ports.

The APPN Port List window appears (Figure 3-5)

Highlight the port yo u want to modify.

The parameter values associated with that interface appear in the parameters window and change dynamica lly with each port that you select.

Click on Apply to sa ve your changes.

303511-A Rev 00

3-17

Configu ring APPN Service s

Figure 3-5. APPN Port List Window

Click on Done to exit the window.

Parameter: Port Enable/Disab le

Default: Enable

Options: Enable

Disable

Function: Enables or disables APPN routing on this port.

Enable -- Initializes the selected APPN port. You can also use the Enable setting to initia lize an existing APPN port that you disabled ear lier.

Disable -- Forces the APPN port into the “down” (inoperative) state.

Instructions: Select Disable to disable APPN routing over this port.

Select Enable to enable or reenable APPN routing over this port.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.2

3-18

303511-A Re v 00

Parameter : Port Add ress

Default: None

Options: None

Function: Specifies the interface address for this port.

Instructions: This is the MAC address, SDLC address, or DLC I and SAP address that

you specifi ed when you adde d the original ci rcuit to the interface. A MAC address star ts with the 0 x prefix and en ds wi th the SA P value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

Parameter: Local Link Station Role

Default: Negotiable

Options: Negotiable

Function: Specifies the initial role of the loc al network node when activating

adjacent link stations thr ough this port. Negotiable means that the local network node can be either primary or se condary and the actual role is determined during lin k activation. A link between the two nodes may require that one link station takes the role of primary link station and one link station tak es the role of secondary link station.

Primary | Secondary

Editing APPN Parameters

Instructions: Click on Values to display the options and select Negotiable, Primary, or

Secondary.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.8

Deleting APPN Ports

To delete a port from an interface on the APPN Port List window (refer to

Figure 3-5), select the port, then click on Delete. The system softwa re deletes the

entry from the APPN configuration.

303511-A Rev 00

3-19

Configu ring APPN Service s

Adding Ports to an APPN Interface

To add a port to an APPN interface, display the APPN Port List window (Figure 3-5) and proceed as follows:

Click on Add.

The APPN Port Configuration or the APPN/FR Port Configuration window appears (Figure 3-6

Figure 3-6. APPN/FR Port Configuration Window

Enter values f or th e P ort Name, P ort Number, Port MAC Addr e ss or P ort

DLCI Address, Port SAP, and Local Link Station Role parameters.

If you are c onf igurin g SDLC, the SDLC Addres s parame ter app ears in stead of the Port MAC Address pa ramete r. If you are configuring frame relay on an LLC2 interface, the Port DLCI Address parameter appears.

Click on OK to save your entries to the co n figura ti on file.

The APPN Port List window (refer to Figure 3-5

3-20

) reappears.

303511-A Re v 00

Parameter: Port Name

Default: None

Options: Up to 8 alphanumeric uppercase characters

Function: Specifies the name of the newly added port.

Instructions: Enter up to 8 alphanumeric uppercase characters with no blank spaces

(leading, trailing, or e mbedded).

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.15

Parameter : Port Numb er

Default: None

Options: Any unique 3-digit number

Function: Specifies a unique number to identify this port, if more than one port is

configured on an int erfa ce.

Instructions: Enter any 3-digit value.

Editing APPN Parameters

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.16

Parameter: Port DLCI Address

Default: None

Options: Valid range changes based on the frame relay address length as follo ws:

Address Length Range

2 bytes 16-1007 3 bytes 1024-64511 4 bytes 131072-8257535

Function: The DLCI is the frame relay PVC identification number. The frame relay

network uses the DLCI to direct basic data flow.

Instructions: Enter a decimal number within the valid range.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

303511-A Rev 00

3-21

Configu ring APPN Service s

Parameter : Port MAC Address

Default: None

Options: Any unique 48-bit, 12-digit hexadecimal MAC-level address

Function: Specifies a unique MAC -l evel address, DLCI (for frame relay), or SDLC

address.

Instructions: Enter a 12-digit MAC hexadecimal address in MSB non-canoni cal form

(regardless of the media), a DLCI address, or an SDLC address.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

Parameter : Port SAP (he x )

Default: None

Options: Any unique SAP 2-digit hexadecimal value, usually 04

Function: Specifies a SAP address that lets multiple applications and protocol

entities in a single comput er share a MAC address.

Instructions: Enter a 2-digit hexadecimal value.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

Parameter: SDLC Address (hex)

Default: None

Options: Any unique 2-digit hexadecimal SDLC- level address

Function: Specifies a unique SDLC address for this circuit.

Instructions: Enter a 2-digit hexadecimal address.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.38

3-22

303511-A Re v 00

Parameter: Local Link Station Role

Default: Negotiable

Options: Negotiable

Primary | Secondary

Function: Specifies the initial role of the loc al network node when activating

adjacent link stations thr ough this port. Negotiable means that the local network node can be either primary or

secondary and the actual rol e is dete rmined during link activation. A link between the two nodes may require one link station to take the role of primary link st ation a nd the ot her link sta tion to ta ke th e rol e of se condary link station.

Instructions: Click on Values to display the options and select Negotiable, Primary, or

Secondary.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.8

Editing APPN Advanced Port Parameters

To edit the APPN adva nced port parameters, display the APPN Port List window (refer to Figure 3-5) and

Editing APPN Parameters

303511-A Rev 00

Click on Advanced.

The APPN Port wind ow ap pears (Figure 3-7)

3-23

Configu ring APPN Service s

Figure 3-7. APPN Port Wind ow

Click on each parameter value that you want to change, then enter a new

value. Click on OK to save you r change s and return to the APPN Port List

window (Figure 3-5).

3-24

303511-A Re v 00

Parameter: Max Receive BTU Size

Default: 2057

Range: 256 to 4105

Function: Specifies the maximum Basic T r ansmission Unit (BTU) size that this

network node can recei v e. Each li nk station dete rmines its own maximum BTU size based on local node definitions and exchange identification (XID) information received from the interface and the adjacent link station.

Instructions: Enter a number in the range 256 to 4105 that the node can handle. The

minimum setting for HPR links is 768.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.9

Parameter: Max Send BTU Size

Default: 2057

Range: 256 to 4105

Editing APPN Parameters

Function: Specifies the maximum Basic T r ansmission Unit (BTU) size that can be

sent over this por t. Each link station determines its own maximum send BTU size based on local node definitions and exchange identification (XID) information received from the interface and the adjacent link station.

Instructions: Enter a number in the range 256 to 4105. For Etherne t networks, the

maximum send BTU size should be less than or equal to 1500. For synchronous media, the maximum send BTU size should be less tha n or equal to the synchronous maximum transmission unit. The minimum setting for HPR links is 768.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.24

303511-A Rev 00

3-25

Configu ring APPN Service s

Parameter : Max I-Fr am e Wind ow

Default: 7

Options: A numeric value not exceeding 127

Function: Specifies the maximum number of inf ormat ion frames (I-frames) that the

local network node can receive before it sends an acknowledgment.

Instructions: Enter a number in the range 1 to 127.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.10

Parameter: Total Link Activation Limits

Default: 1

Range: 0 to 256; see Table 3-1

Function: Specifies the link activation limit for this port. The value is the maximum

number of inbound and outbound link stations that the port will allow in this configuration. The maximum value depends on the setting of the Local Link Station Role paramete r and the type of port, as listed in Table 3-1.

Instructions: Specify a value in the range 0 to 256. The v alue must be greater than or

equal to the combined settings for the Inbound Link Activ ation Limits an d Outbound Link Activation L imits p aram eter s .

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.17

Parameter: Inbound Link Activation Limits

Default: 0

Range: 0 to 256; see Table 3-1

Function: Specifies the inbound link activation limit for this port. The value is the

maximum number of inbound link stations that the port will allow in this configura tion.

Instructions: Specify a value in the range 0 to 256. This value plus the current setting

for the Outbound Link Activation Limits parameter must be less than or equal to the current Total Link Activatio n Lim i ts parameter setting.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.18

3-26

303511-A Re v 00

Parameter: Outbound Link Activation Limits

Default: 0

Range: 0 to 256; see Table 3-1

Function: Specifies the maximum outbound link activation limit for this port. The

value is the maximum number of outbound link stations that the port will allow in this configuration.

Instructions: Specify a value in the range 0 to 255. This value plus the current setting

for the Inbound Link Activation Limits parameter must be less than or equal to the Total Link Activat io n Lim i ts parameter setting.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.19

Table 3-1. Link Activation Limit Default Values

Local Link

Port Type

Station Role

Total Link Activation Limit

Editing APPN Parameters

Outbound Inbound Link Activation Limits

Link

Activation

Limits

303511-A Rev 00

Leased Secondary 1 1 0 Leased Negotiable 1 0 0 Leased Primary 256 0 256 SA TF any 256(x+y) 128(x) 128(y)

3-27

Configu ring APPN Service s

Parameter: Implicit CP Sessions

Default: Yes

Options: Yes

Function: Specifies whether CP-to-CP ses sions a re permitted for dynamic link

Instructions: Click on Values and select Yes or No.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.25

Parameter: Implicit Limited Resource

Default: No

Options: Yes

Function: Specifies whether dynamic lin k stat ions on this port should be defined as

Instructions: Click on Values and select Yes or No.

stations. Dynamic link stations are link stations that are not defined on this port, but are activated by the adjacent node.

limited resources. A limited resource link station deactivates after the number of sessions using the port drops to zero.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.26

3-28

303511-A Re v 00

Editing APPN Parameters

Parameter: Implicit Effective Capacity

Default: 16M

Options: 1200

2400 4800 7200 9600 14400 19200 48000 56000 64000 4M 10M 16M Maximum

Function: The Effectiv e Capacity is the hi ghest bit -transm issi on rate t hat the TG can

obtain before being conside r ed overloaded. The link bandwidth and maximum load factor deter mine this value. TGs to dynamic link stations on this port use this value.

Instructions: Click on Values and select a number from the list.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.27

Parameter: Implicit Connection Cost

Default: 128

Range: 0 to 255, inclusive

Function: Specifies the relative cost (per connect time) of using a TG to dynamic

link stations on this port . A value of 0 indicates no cost, and a value of 255 indicates maximum cost. The cost per connect time is typically based on the applicable tariffs for the transmission facility this TG uses. An X.25 network, for example, may have a high connection c ost for dynamic link stations.

Instructions: Enter a number in the range 0 to 255.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.28

303511-A Rev 00

3-29

Configu ring APPN Service s

Parameter: Implicit Byte Cost

Default: 128

Range: 0 to 255, inclusive

Function: Specifies the relati ve cost of transm itti ng a b yte ov e r this TG to a dyna mic

link station on this port. A value of 0 indicates no cost, and a value of 255 indicates maximum cost. An X.25 net work, for example, may ha ve a high byte cost for dynamic link sta tions.

Instructions: Enter a number in the range 0 to 255.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.29

Parameter: Implicit Security

Default: Nonsecure

Options: Nonsecure

Public-Switched Underground Conduit Encrypted Guarded radiation Maximum

Function: Specifies the security le vel of the TG to the dynamic link stations on this

port.

Instructions: Click on Values and select one of the common definitions indicated under

Options.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.30

3-30

303511-A Re v 00

Parameter: Implicit Delay

Default: Negligible

Options: Negligible

Terrestrial Packet Long Maximum

Function: Specifies the propaga tion del ay, or the relati ve a mount of time th at it ta kes

for a signal to trav el the length of a TG to dynamic link stations on this port.

Instructions: Click on Values and select a common definition indicated under Options.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.31

Parameter: Implicit User-Defined 1

Default: 128

Range: 0 to 255

Editing APPN Parameters

Function: Specifies the first user-defined TG characteristic to a dynamic link station

on this port.

Instructions: Enter a value in the range 0 to 255.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.32

Parameter: Implicit User-Defined 2

Default: 128

Range: 0 to 255

Function: Specifies the second user-defined TG characteristic to a dynamic link

station on this port.

Instructions: Enter a value in the range 0 to 255.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.33

303511-A Rev 00

3-31

Configu ring APPN Service s

Parameter: Implicit User-Defined 3

Default: 128

Range: 0 to 255

Function: Spec ifies the third user-defined TG charac teri s tic to a dynamic link

station on this port.

Instructions: Enter a value in the range 0 to 255.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.34

Parameter: DLUR Implicit LS Support

Default: Disable

Options: Enable

Function: Enables DLUR for implicit link stations on this port. This parameter is

ava ilable when the DLUR Support Enable/Disable par amet er is set to Enable.

Instructions: Click on Values and select Enable or Disable.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.40

Disable

Parameter: HPR Implicit LS Support

Default: Enable

Options: Enable

Function: Enables HPR for implicit link stations on this port. This parameter is

ava ilable when the HPR Support parameter is set to Enable.

Instructions: Click on Values and select Enable or Disable.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.35

3-32

Disable

303511-A Re v 00

Parameter : LLC Error Re cover y Under HPR

Default: Disable

Options: Enable

Disable

Function: Enables or disables LLC error recovery on implicit link stations on this

port. This parameter is available when th e global HPR Support parameter is set to Enable, and when the HPR Implicit LS Support paramet er is se t to Enable on this port.

Instructions: Click on Values and select Enable or Disable.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.36

Parameter: Implicit Link Deactivation Time

Default: 120

Range: 5 to 255

Function: Specifies the time (in seconds) before implicit link stations on this port

deac tiva t e if i t is an H PR limi ted re s ou rce. This parameter is avail able when the Implicit Limited Resour ce is set to Yes, and when the HPR Support and the HPR Implicit LS Support parameters are set to Enable.

Editing APPN Parameters

Instructions: Enter a value in the range 5 to 255, inclusive.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.37

303511-A Rev 00

3-33

Configu ring APPN Service s

Parameter: HPR UI SAP

Default: C8

Options: Any 2-digit hexadecimal v alue

Function: Specifies the local HPR service access point address for unnumbered

information (UI) f rames on this por t. A UI frame is an LLC frame type on which LLC does not perform link-le vel error recovery. This parameter is ava ilable when HPR Support is set to Enable.

In base APPN/LLC2 configurations, LLC2 performs link-level recovery by sending information frames (I-frames). If you disable link-level err or recovery with the HPR Link-Level Error Recovery parameter, APPN sends the HPR network layer packe ts a s UI frames, since RTP performs the link-level error recovery on an end-to-end basis.

Instructions: Enter any 2-digit hexadecimal value. The 0x prefix is optional. For

example, the value C8 uses the 0x prefix.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.3.1.39

3-34

303511-A Re v 00

Editing APPN Adjacent Link Stations

To edit APPN Adjacent Link Station parameters, begin at the Configuration Manager window (re fer t o Figure 3-1) and

Select Protocols > APPN > Adjacent Link Stations.

Editing APPN Parameters

The APPN Adjacent Link Station List windo w a ppears (Figure 3-8

Figure 3-8. APPN Adjacent Link Stat i on List Window

Edit those parameters you want to change.

If the window appears without any adjacent link stations in the list, go to the section “Adding Adjacent Link Stations.”

303511-A Rev 00

3-35

Configu ring APPN Service s

Click on Apply to sa ve your changes.

Click on Done to exit the window.

To edit the advanced adjacent link station parameters, click on Advanced and go to the section “Editing Adv anced Adjacent Link Station Parameters.”

Parameter: Enable/Disable

Default: Enable

Options: Enable

Function: Enables or disables the adjacent link station highlighted in the APPN

Adjacent Link Station List window. Enable -- Initializes the selected adjacent link station. You can also use

the Enable setting to init ialize an existing adjace nt link station port that you disabled earlier.

Disable -- Forces the adjacent link station into the “down” (inoperative) state.

Disable

Instructions: Click on Values and select Enable or Disable. Select Disable to disable

the adjacent link stat ion. Select Enable to enable or reenable the adjacent link station.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.2

Parameter: Port Name

Default: None

Options: Up to 8 alphanumeric uppercase characters

Function: Specifies the name of the port supporting the adjacent link station.

Instructions: Enter up to 8 alphanumeric uppercase characters with no blank spaces

(leading, trailing, or e mbedded).

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.4

3-36

303511-A Re v 00

Parameter: Adjacent Node Name

Default: None

Options: Any valid name with up to 17 characters in the format

<NETID>.<NAME>; NETID

characters fol lowe d b y a period, and up to 8 characters

Function: Identifies the name of the network and the adjacent node name.

Instructions: Type to 8 characters for the network ID name, follow with a period, then

type a control point na me with u p to 8 char acters. You must use uppercase characters only and the f irs t character must be non-numer ic. Blank spac es (leading, trailing, and e mbedded) are not allowed in the node name. For example, APPNNODE.CPONE is a valid entry for the Adjacent Node Name param eter.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.6

Editing APPN Parameters

is the unique network name with up to 8

is the control point na me with

NAME

303511-A Rev 00

3-37

Configu ring APPN Service s

Parameter : Adj acent Node Type

Default: LEARN

Options: LEARN

NN EN BACK LEVEL LEN NODE HOST XID 3 HOST XID 0 DSPU XID DSPU NO XID

Function: Specifies the type of adjacent link station node.

Instructions: Click on Values and select an adjacent node type, as indic at ed under

Options.

LEARN -- APPN automatically learns the type of adja cent link station. NN -- Network Node EN -- End Node BA CK LEVEL LEN NODE -- Back-level low-entry networking node. HOST XID 3 -- Host node that supports XID3 protocols; includes the

network name control ve ctor.

HOST XID 0 -- Host node that supports XID0 protocols. DSPU XID -- Down stream physical unit (DSPU) node that supports

XID3 protocols, but does not include the network name control ve ctor. DSPU NO XID -- Down stream physical unit (DSPU) node that does not

support XID protoc ols. This selecti on is v alid on n onswitche d ports and is invalid on negotiable ports.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.23

3-38

303511-A Re v 00

Parameter : Ena ble D LU R Support for this LS

Default: Disable

Options: Enable

Disable

Function: Specifies whether the adja cent link station is a PU2.0 node to be serviced

by DLUR.

Instructions: Click on Values and select Enable or Disable.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.28

Parameter: Primary DLUS Name

Default: None

Options: Any valid name with up to 17 characters in the format

<NETID>.<NAME>; NETID

characters fol lowe d b y a period, and up to 8 characters

Function: Specifies the fully qualified name of the DLUS node that will serve the

PU2.0 link station.

Editing APPN Parameters

is the unique network name with up to 8

is the control point na me with

NAME

Instructions: Type up to 8 characters for the networ k ID name; follow with a period,

and then type a control point name with up to 8 characters. You must use uppercase characters only and the first charact er must be non-numeric. Blank spaces (leading, trailing, and embedded) are not allo wed in the node name. For example, APPNNODE.D LUR is a valid entry for this parameter.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.30

Parameter: DSPU Name

Default: None

Options: Up to 8 alphanumeric uppercase characters.

Function: Specifies the name of the do wn stream physical unit (DSPU) supported by

DLUR.

Instructions: Enter up to 8 alphanumeric uppercase characters with no blank spaces

(leading, trailing, or e mbedded). The first character must be a letter.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.29

303511-A Rev 00

3-39

Configu ring APPN Service s

Parameter : Adj acent Node Block N um b er

Default: None

Options: None

Function: A unique hexadecimal value that identifies APPN in this adjacent node.

The number is the first 3 digits of the node ID.

Instructions: Accept the derived value that displays in this field.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.10

Parameter : Adj acent Node ID Number

Default: None

Options: Optional; if specified, a valid string of 5 hexadec imal digits (0 to 9,

A,B,C,D,E,F)

Function: Identifies the local APPN adjacent node and is p resent i n APPN ale rts and

exchange identifications (XIDs). These 5 digits are combined with the 3-digit block number to form a unique XID node identification for the adjacent node. The APPN network node and the adjacent node exchange node identific ations when establishing a connection.

Instructions: Enter 5 hexadecimal digits.

MIB Object ID: 1.3.6.1.4.1.18.3.5.14.1.4.1.11

3-40

303511-A Re v 00

Avaya Configuring APPN User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Configuring APPN Services

Contents

Figures

Tables

Before You Begin

Preface

Text Conventions

Acron yms

Bay Netwo rks Technical Publicati o ns

How to Get Help

APPN Networkin g Overview

APPN Node Type s

Network Nodes

End Nodes

Low-Entry Networking Nodes

Control Points and Logical Units

Dependent Logical Unit Requester and Server

lnterfaces, Ports, and Link Stations

Interfaces

Ports

Link Stations

Connection Netw o rks

Intermediate Session Routing

Packet Segmentation and Reassembly

Adaptive Pacing

High Performance Routing

Rapid Transport Protocol

Non-Disruptive Path Switching

End-to-End Error Recovery

End-to-End Flow and Congestion Control

Automatic Network Routing

Fast Packet Switching

Session Transpare n cy

Source Routing

APPN Services

Session Services

Directory Services

Topology and Routing Services

Configuration Services

Management Services

For More Information About APPN

Using the Parameter Descriptions

Enabling APPN over LLC2 Interfaces

Enabling APPN over LLC2 Interfaces Using SRB

Enabling APPN Interfaces over SDLC

Using the Parameter Descriptions

Accessing APPN Parameters

Editing APPN Global Parameters

APPN Global Advanced Parameters

Editing APPN lnterfaces and Ports

Deleting APPN Interfaces

Editing APPN Ports

Deleting APPN Ports

Adding Ports to an APPN Interface

Editing APPN Advanced Port Parameters

Editing APPN Adjacent Link Stations