IBM 8275 User Manual
8275 Model 416 High Performance Ethernet
Workgroup Switch
User’s Guide
IBM
GC30-4026-00
8275 Model 416 High Performance Ethernet
Workgroup Switch
User’s Guide
IBM
GC30-4026-00
Note
Before using this information and the product it supports, be sure to read “Appendix A. Safety Information” on page 67 and
“Appendix B. Notices” on page 73.
First Edition (May 1999)
This edition applies to Release 1.0 of the IBM 8275 Model 416 High Performance Ethernet Workgroup Switch.
Order publications through your IBM representative or the IBM branch office serving your locality. Publications are
not stocked at the address given below.
A form for readers’ comments appears at the back of this publication. If the form has been removed, address your
comments to:
Department CGF
Design & Information Development
IBM Corporation
PO Box 12195
RESEARCH TRIANGLE PARK NC 27709
USA
When you send information to IBM, you grant IBM a nonexclusive right to use or distribute the information in any
way it believes appropriate without incurring any obligation to you.
© Copyright International Business Machines Corporation 1999. All rights reserved.
US Government Users Restricted Rights – Use duplication or disclosure restricted by GSA ADP Schedule Contract
with IBM Corp.
Contents
Figures ........................... vii
Tables ........................... ix
About This Guide ....................... xi
Who Should Use This Guide ................... xi
How This Manual is Organized................... xi
Accessing the Softcopy Library .................. xi
Online Support ........................ xii
Obtaining Service ....................... xii
Chapter 1. Introduction ..................... 1
Product Overview ....................... 1
8275-416 Functions....................... 1
Layer 2 Switching ...................... 1
Management and User Interfaces................. 2
Security .......................... 3
Reliability and Serviceability................... 3
Performance ........................ 3
Year 2000 (Y2K) ....................... 3
Hardware .......................... 4
Cabling Requirements ..................... 4
Front Panel ......................... 5
8275-416 Status LEDs..................... 6
Ethernet Port LEDs ...................... 77
Feature Module LEDs ..................... 8
Physical Characteristics .................... 9
Chapter 2. Accessing the 8275-416 ................11
Connectivity Methods ......................11
Out-of-Band Connectivity ....................11
In-Band Connectivity - Telnet, Web, SNMP .............13
Chapter 3. Configuring your 8275-416 ...............17
Configuring IP information ....................17
Concepts About Making Configuration Changes ............19
Making Configuration Changes .................19
Processing Configuration Changes ................19
Saving Configuration Changes Across a Reset or Power Cycle......20
Making Configuration Changes via the Terminal Interface .........20
Making Configuration Changes .................20
Applying (Processing) Configuration Changes ............21
Saving Configuration Changes Across a Reset or Power Cycle......21
Making Configuration Changes via the Web Interface ..........22
Making Configuration Changes .................22
Processing Configuration Changes ................22
Saving Configuration Changes Across a Reset or Power Cycle......23
Making Configuration Changes via SNMP ..............23
Making Configuration Changes .................23
Processing Configuration Changes ................23
Saving Configuration Changes Across a Reset or Power Cycle......23
Chapter 4. Using the Terminal Interface ..............25
© Copyright IBM Corp. 1999 iii
Login Panel..........................25
The Main Menu ........................26
System Information .......................26
Inventory Information .....................27
System Description ......................28
Management .........................29
Configuring the 8275-416 for Network Connectivity ..........29
Configuring Serial Port.....................30
Configuring for DHCP or BootP Server...............31
Configuring SNMP ......................33
Configuring Traps ......................36
Configuring Telnet ......................38
Ping ...........................39
ARP Cache.........................40
Device Configuration ......................42
Configuring the 8275-416....................4246
Configuring Spanning Tree Protocol (STP) .............46
Configuring Broadcast Storm Recovery ..............48
Configuring 802.3x Flow Control .................49
Statistics ...........................50
Port Summary Statistics ....................50
Port Detailed Statistics.....................50
Management Statistics.....................51
User Account Management ....................52
System Utilities ........................53
Saving Applied Changes ....................53
Logging Out ........................53
Handling Files ........................54
Reset Utility.........................56
Resetting System ......................57
Resetting Configuration Data to Factory Default Values.........57
Resetting Passwords to Factory Default Values ...........58
Debug Utility ........................59
iv 8275-416 User’s Guide
Chapter 5. Using the Web Interface ................61
Web Page Layout .......................61
Starting the Web Interface ....................61
Commands .........................62
Chapter 6. Troubleshooting and Obtaining Service ..........63
Diagnosing Problems ......................63
Obtaining Software .......................63
Troubleshooting in a Network ...................63
Start of Troubleshooting Process ..................63
Choosing a Troubleshooting Procedure ...............64
Procedure A ........................64
Procedure B ........................64
Procedure C ........................65
Procedure D ........................65
Obtaining Service .......................65
Appendix A. Safety Information..................67
Appendix B. Notices ......................73
Notice to Users of Online Versions of This Book ............73
Electronic Emission Notices ....................73
Federal Communications Commission (FCC) Statement ........73
Industry Canada Class A Emission Compliance Statement .......74
Avis de conformité aux normes d’Industrie Canada ..........74
European Norm (EN) Statement .................74
Japanese Voluntary Control Council for Interference (VCCI) Statement . . . 75
Korean Communications Statement ................75
Taiwanese Class A Warning Statement...............76
Class 1 Laser Statement .....................76
Class 1 LED Statement .....................76
Trademarks..........................76
Appendix C. Cable Pinout Diagrams ................79
Straight-Through 10BASE-T/100BASE-TX Cables............79
Straight-Through 10BASE-T/100BASE-TX Cables for STP ........80
Crossover 10BASE-T/100BASE-TX Cables ..............80
Crossover 10BASE-T/100BASE-TX Cables for STP ...........81
EIA-232 Port .........................81
Null-Modem Cables .......................82
Appendix D. Interface Conventions for the Console..........83
Index ............................87
Readers’ Comments — We’d Like to Hear from You..........93
Contents v
vi 8275-416 User’s Guide
Figures
1. Front Panel of the 8275-416 . ................. 5
2. Status LEDs for the 8275-416 .................. 6
3. Port Status LEDs for the 8275-416 and the 10/100BASE-TX Ethernet
Feature Module. ...................... 7
4. Status LEDs for the 10/100BASE-TX Ethernet Feature Module...... 8
5. Status LEDs for the 100BASE-FX Ethernet Feature Module. ...... 9
6. Out-of-Band Connectivity — Locally Attached Terminal ........12
7. Out-of-Band Connectivity — Remotely Attached Terminal .......12
8. In-Band Connectivity ....................14
9. Configuring BootP/Static DHCP. ................18
10. Configuring Network Connectivity (IP Information). .........18
11. Log In Panel for Terminal Interface ...............25
12. Main Menu for Terminal Interface ................26
13. System Information Menu...................27
14. Inventory Information ....................27
15. System Description .....................28
16. Management Menu .....................29
17. Network Connectivity Configuration ...............29
18. Serial Port Configuration ...................31
19. Server Configuration.....................33
20. SNMP Community Configuration ................34
21. SNMP Trap Receiver Configuration ...............35
22. Trap Flags Configuration ...................36
23.TrapLog.........................37
24. Trap Log Status ......................38
25. Telnet Configuration .....................39
26. Ping...........................40
27. ARP Cache ........................41
28. Device Configuration ....................42
29. Switch Configuration.....................43
30. Port Configuration .....................44
31. Port Monitoring ......................46
32. Spanning Tree Switch Configuration/Status ............47
33. Spanning Tree Port Configuration/Status .............48
34. Broadcast Storm Recovery ..................49
35. 802.3x Flow Control.....................49
36. Port Summary Statistics ...................50
37. Port Detailed Statistics ....................51
38. Management Statistics ....................51
39. User Account Management Menu ................52
40. Save Applied Changes Menu .................53
41. Logout Utility .......................54
42. Downloading File to the 8275-416 . ...............55
43. Uploading File from the 8275-416 . ...............55
44. Reset Menu........................57
45. Reset Menu........................57
46. Reset Configuration Data to Factory Defaults ...........58
47. Reset Passwords to Factory Defaults ..............59
48. Straight-Through UTP Cable (RJ-45 to RJ-45), T568A ........79
49. Straight-Through UTP Cable (RJ-45 to RJ-45), T568B ........79
50. Straight-Through STP Cable (RJ-45 to IBM Data Connector)......80
51. Crossover UTP Cable (RJ-45 to RJ-45), T568A...........80
52. Crossover UTP Cable (RJ-45 to RJ-45), T568B...........80
© Copyright IBM Corp. 1999 vii
53. Crossover STP Cable (RJ-45 to IBM Data ConnectorCrossover) ....81
54. Pinout of the EIA-232 Port ..................81
55. EIA-232 Modem Cable for Terminal with 25-Pin Connector ......82
56. EIA-232 Modem Cable for Terminal with 9-Pin Connector .......82
viii 8275-416 User’s Guide
Tables
1. Ethernet Cable Requirements ................. 4
2. Connectivity Methods and Available User Interfaces .........11
3. MIBs Supported by the 8275-416 . ...............14
4. Troubleshooting— Isolating Problems ..............64
5. Special Keys and Commands Used with the Terminal Interface .....83
© Copyright IBM Corp. 1999 ix
x 8275-416 User’s Guide
About This Guide
This manual briefly describes the features and capabilities of the 8275 Model 416
High Performance Ethernet Workgroup Switch. However, its primary purpose is to
describe how to use the capabilities offered by the 8275-416 to configure, obtain
status information, and monitor performance of the switch in your network.
Who Should Use This Guide
This manual is intended for the network administrator or person responsible for
integrating, maintaining and monitoring the 8275-416 in your network. The person
responsible for coordinating installation and service for the 8275-416 will also find
this manual useful.
How This Manual is Organized
This manual contains the following chapters and appendixes:
v Chapter 1. Introduction describes the functions and capabilities of the 8275-416 .
v Chapter 2. Accessing the 8275-416 describes the various physical methods of
accessing the 8275-416 .
v Chapter 3. Configuring your 8275-416 describes initial configuration of IP
information.
v Chapter 4. Using the Terminal Interface describes the using functions of the
terminal interface.
v Chapter 5. Using the Web Interface introduces the Web interface.
v Chapter 6. Troubleshooting and Obtaining Service gives suggestions for solving
problems obtaining service.
v Appendix A. Safety Information contains translated safety instructions to observe
when performing troubleshooting proccedures.
v Appendix B. Notices lists important notices about the use of this product.
v Appendix C. Cable Pinout Diagrams describes and illustrates pinout diagrams for
ethernet and null modem cable connectors.
v Appendix D. Interface Conventions for the Console describes the definitions and
functions of special keys and commands that are used by the terminal interface.
Accessing the Softcopy Library
Softcopy versions of 8275-416 product documentation is available from either the
Documentation CD-ROM (shipped with the product) or the IBM Networking
Products Web site. To access product documentation shipped on the CD-ROM,
follow the instructions in the booklet that accompanies the CD-ROM. Visit the
following Web site to access the 8275-416 documentation at:
http://www.networking.ibm.com/did/8275bks.html
© Copyright IBM Corp. 1999 xi
Online Support
To obtain support information, including technical tips, current product information,
and code updates and fixes for the 8275-416 , visit the IBM Networking Tech
Support page at:
http://www.networking.ibm.com/support
You may also subscribe to receive e-mail notifications about code updates, tips, and
FAQs for your 8275-416 .
Obtaining Service
If you need assistance in troubleshooting or you need service for your 8275–416,
call IBM at:
v 1 800 772-2227 in the United States
v 1 800 426-7378 (1 800 IBM-SERV) in Canada.
v In other locations, contact your place of purchase.
Refer to your IBM Warranty for information concerning service for the product.
xii 8275-416 User’s Guide
Chapter 1. Introduction
This chapter briefly describes the functions, capabilities, and benefits of the 8275
Model 416 High Performance Ethernet Workgroup Switch. This information helps
you to plan for and use the 8275-416 in your network.
Product Overview
Fast Ethernet switching continues to evolve from high-end backbone applications to
desktop switching applications. The 8275-416 provides a low cost and powerful
Layer 2 switch solution. It is an attractive base switch offering with the following key
functions:
v High performance, Layer 2, managed switch
v 16 base ports (10/100BASE-TX), expandable to 24 or 32 ports. The expansion
can be any combination of the following optional feature modules:
– 8-Port 10/100BASE-TX
– 8-Port 100BASE-FX
v Robust management support; VT100 terminal interface, Web interface, SNMP
v Backplane performance 10 Giga-bits per second Ethernet switching
v Desktop and segment switching infrastructure
v Affordable migration to higher performance networks
Network administrators have a choice of three easy-to-use management methods:
VT100 interface, Web-based, and Simple Network Management Protocol (SNMP).
These management methods enable the network administrator to configure,
manage, and control the 8275-416 locally or from anywhere on the network.
The Spanning Tree Protocol (STP) provides fault tolerance on the network.
8275-416 Functions
This section describes the functional support included in the 8275-416 :
v Layer 2 switching
v Management and user interface
v Security
v Reliability and serviceability
v Performance
v Flow Control
v Y2K
Layer 2 Switching
The 8275-416 is a frame-based Layer 2 Ethernet switch. In a Layer 2 switch, frame
forwarding is based on MAC addresses. The 8275-416 supports the IEEE P802.1D
(1990) standard.
© Copyright IBM Corp. 1999 1
802.3x Flow Control
The 8275-416 supports the 802.3x flow control, which, when enabled allows the
transmission of data frames to be inhibited for a specified period of time. The
default for 802.3x flow control is
port is in full duplex mode.
Disabled
. 802.3x flow control is valid only when the
Broadcast Storm Recovery
The 8275-416 detects broadcast storms and automatically blocks broadcast traffic
to minimize the impact of the broadcast storm on the rest of the network. You can
enable or disable this function at a switch level. If broadcast storm recovery is
enabled, each port will monitor incoming broadcast traffic. If the broadcast traffic
exceeds 20 percent of the port speed, the broadcast traffic on this port is blocked
until the broadcast traffic returns to 20 percent or below port speed. The default for
broadcast storm recovery is
Disabled
.
Address Aging
An address recognized by the switch is removed from the port lookup tables after a
period of time if no frames have been received from that address. The default value
for the aging period is 300 seconds (5 minutes), but it can be changed by the user.
The time values range from 10 seconds to 1000000 seconds.
If a port lookup table is full and a frame is received with a new address that needs
to be added to the table, the frame is sent multicast.
Management and User Interfaces
The network administrator has a choice of these easy-to-use management
methods:
v A VT100 terminal interface allows the network administrator to fully manage the
8275-416 using a standard terminal or terminal emulator connected over the
network using Telnet or connected to the 8275-416 ’s serial port (EIA 232).
“Chapter 2. Accessing the 8275-416” on page 11 describes how to access the
8275-416 using this interface and “Chapter 4. Using the Terminal Interface” on
page 25 instructs you about using this interface.
v A Web-based interface enables you to manage the 8275-416 through standard
Web browsers. There must be a physical path between the Web browser and the
8275-416 over the Ethernet network to use this method of connectivity.
“Chapter 2. Accessing the 8275-416” on page 11 describes how to access the
8275-416 using this interface and “Chapter 5. Using the Web Interface” on
page 61 instructs you about using this interface.
v The 8275-416 has a Simple Network Management Protocol (SNMP) agent that
the network administrator can access with a standard Network Manager. The
following MIBs (Management Information Base) are supported:
– MIB II (RFC 1213)
– 8275-416 Enterprise MIB
– RMON MIB (RFC 1757)
– Bridge MIB (RFC 1493)
– IEEE 802.3 Ethernet (RFC 1643)
v 8275-416 interoperates with the following SNMP Managers:
– Any standard MIB Browser (SNMP V1)
2 8275-416 User’s Guide
– IBM Nways Manager for NT (V2.0 or later)
– IBM Nways Manager for HP-UX (V2.0 or later)
– IBM Nways Manager for AIX (V2.0 or later)
Security
User access security can be implemented using the following functions of the
8275-416 :
v User Accounts: The 8275-416 supports up to six accounts (one user with
Read/Write status and five with Read Only status) for terminal interface and Web
access. Access to the 8275-416 configuration panels is password protected. Only
one user name with Read/Write status is allowed to be configured, which
prevents potential conflicts in configuration changes. The default Read/Write user
name is:
the password, contact your IBM service representative.
v SNMP read/write protection based on community name.
admin
Reliability and Serviceability
The 8275-416 :
v Provides a comprehensive Power-On Self Test (POST) that ensures that all of its
components are functioning correctly.
v Controls a seven-segment LED that allows you to follow the boot sequence.
v Allows you to download software upgrades using any of the management
methods.
v Allows you to implement parallel paths for network traffic through the use of
Spanning Tree Protocol (STP) which provides a level of fault tolerance and
ensures that:
– Redundant paths are disabled when the main paths are operational
– Redundant paths are enabled if the main paths fail
v Allows you to configure a port to “see” traffic going into and out of another port
on the 8275-416 (Port Mirroring).
v Provides statistics for all ports.
, and the default password is blanks (no password). If you lose
Performance
Year 2000 (Y2K)
High performance, Layer 2 switching for the 8275-416 consists of:
v Switching for up to 32 ports
v Supporting up to 12 000 end stations
v Processing 64-bytes packets at the following rates:
– 14 880 packets per second to 10 Mbps ports.
– 148 800 packets per second to 100 Mbps ports
v Detecting broadcast storms and preventing them from impacting the network
(Broadcast Storm Control).
The 8275-416 is Y2K ready.
Chapter 1. Introduction 3
When used in accordance with its associated documentation, it is capable of
correctly processing and/or receiving date data within and between the 20th and
21st centuries - providing all other products (for example, hardware, software, and
firmware) used with the 8275-416 properly exchange accurate date data.
For additional information about Year 2000 related topics, visit:
http://www.ibm.com/year2000
Hardware
Cabling Requirements
Ethernet cables are
not
provided and must be separately purchased. You can order
them through your IBM representative.
Table 1 shows cable type and length requirements. Cable requirements depend on
the speed of the network. Cables and connecting hardware must meet the
standards specified in the ANSI/TIA/EIA 856-A or CSA T529 standards.
Table 1. Ethernet Cable Requirements
Ethernet Type Cable Requirements Max. Cable Length
10BASE-T Category 3, 4, 5, 100-ohm STP/UTP cable 100 m (328 ft)
100BASE-TX Category 5, 100-ohm STP or UTP cable and
connecting hardware
100BASE-FX 62.5 micron multimode fiber-optic cabling 2 km (6561 ft) at full
100 m (328 ft)
duplex; 412 m (1352 ft)
at half duplex
10/100BASE-TX
10BASE-T connections are MDX ports and operate correctly with standard
Category 3, 4, 5, 100-ohm UTP or STP cable and connecting hardware, as
specified in the ANSI/TIA/EIA 856-A or CSA T529 standards when
connected to MDI ports. When connecting to other MDX ports, such as
ports of other 8275-416 switches, you must use crossover cables.
Do not use telephone extension cables in 10/100BASE-TX networks. The
wire pairs in those cables are not twisted and the cables do not meet other
requirements for use in a 10BASE-T network.
4 8275-416 User’s Guide
For connections to 10/100BASE-TX networks, you can use only Category 5
STP or UTP cables.
100BASE-FX
For connection to 100BASE-FX networks, you can use only 62.5/125 MMF
cabling with MTRJ connectors.
Front Panel
Figure 1. Front Panel of the 8275-416 .
8275-416 LEDs
8275-416 LEDs are located at the lower left corner of the front panel (left of
the single-digit display and are identified with a vertical bar (I), OK, and
Fault. The LED for the vertical bar is Green, as is the OK LED; the Fault
LED’s color is amber. The states of the LEDs are on, off, or blinking, are
explained later in this chapter.
Single-Digit Display
The single digit display is located at the lower left corner of the front panel
as shown in Figure 2 on page 6. During diagnostics, the character displayed
indicates the diagnostic test being executed. Once the 8275-416 is
operational, the character displayed is its Unit ID.
Serial Port (EIA 232)
The serial port is a standard DB-9 male connector that provides an
EIA–232 serial interface (sometimes referred to as the out-of-band
management port). Use a null-modem serial cable when connecting to a
workstation (see “Appendix C. Cable Pinout Diagrams” on page 79). Use a
VT100 terminal emulator program to configure your terminal’s attached
COM port as follows:
v 19 200 baud
v 8 data bits
v 1 stop bit
v No parity
v Hardware flow control OFF
See “Chapter 2. Accessing the 8275-416” on page 11 for more information
about connectivity.
Ethernet 10/100BASE-TX Ports
The 8275-416 has 16 Ethernet 10/100BASE-TX ports. Each port has two
LEDs located at the lower right and left of the connector. Status indications
of the Port LEDs are explained later in this chapter.
Feature Module Slots 1 and 2
These feature modules are available to expand port connections to your
8275-416 :
Chapter 1. Introduction 5
v 8-Port 10/100BASE-TX Ethernet Feature Module, IBM P/N 35L2355
v 8-Port 100BASE-FX Ethernet Feature Module, IBM P/N 35L2356
8275-416 Status LEDs
8275-416 Status LEDs are shown in Figure 2 and their indications are explained in
the table that follows:
Figure 2. Status LEDs for the 8275-416 .
LED Color State Explanation
I Green ON There is power to the 8275-416 and the
power supply is OK.
OFF There is no power is present, or there
is a power supply failure.
OK Green ON The 8275-416 is operational.
OFF The 8275-416 is not operational.
Blinking Operational code or configuration file
transfer is in process.
Fault Yellow ON Indicates a hardware fault.
OFF No hardware fault.
Blinking Diagnostics is in process.
6 8275-416 User’s Guide
Ethernet Port LEDs
Port LEDs on the 8275-416 and the 10/100BASE-TX Ethernet feature module are
shown in Figure 3 and they are explained in the table that follows.
Figure 3. Port Status LEDs for the 8275-416 and the 10/100BASE-TX Ethernet Feature
Module.
LED Color State Explanation
Right Ethernet
Port LED
Left Ethernet Port
LED
Green ON Indicates a 100 Mbps port. This LED
being On only has meaning if the link
is up.
OFF Indicates a 10 Mbps port. This LED
being Off only has meaning if the link
is up.
Green ON Link is up.
OFF Link is down.
Blinking Transmitting (Tx) and Receiving (Rx)
traffic.
Chapter 1. Introduction 7
Feature Module LEDs
Each feature module has an OK and a Fault LED located at the left side of the
faceplate. The OK LED is Green and the Fault LED is amber. These LEDs are
shown in Figure 4 and Figure 5 on page 9. They indicate the status of the feature
module and are explained in the table that follows.
Status LEDs for the 10/100BASE-TX Ethernet Feature Module
Figure 4. Status LEDs for the 10/100BASE-TX Ethernet Feature Module.
LED Color State Explanation
OK Green ON There is power to feature module.
Fault Yellow ON There is a module fault.
Right Ethernet
Port LED
Left Ethernet Port
LED
OFF There is no power to feature module,
no power to the 8275-416 , or the
module has failed.
OFF There is no module fault.
Green ON Indicates a 100 Mbps port.
OFF Indicates a 10 Mbps port.
Green ON Link is up.
OFF Link is down.
Blinking Transmitting (Tx) and Receiving (Rx)
traffic.
8 8275-416 User’s Guide
Status LEDs for the 100BASE-FX Ethernet Feature Module
Figure 5. Status LEDs for the 100BASE-FX Ethernet Feature Module.
LED Color State Explanation
OK Green ON There is power to the feature
module.
OFF There is no power to the feature
module, no power to the 8275-416
or the module has failed.
Fault Yellow ON There is a module fault.
OFF There is no hardware fault.
Port LED Green ON Link is up.
OFF Link is down.
Blinking Transmitting (Tx) and receiving (Rx)
traffic.
Physical Characteristics
Physical characteristics for the 8275-416 are summarized in the following table:
Characteristic Specification
Physical Dimensions
Weight (estimate) 6.0 kg (13 lb)
Service Clearance
Height 63.0 mm (2.48 in.) 1.5 EIA rack units
Width 440.0 mm (17.16 in.)
Depth 355.6 mm (14 in.)
Front Minimum of 15.3 mm (6 in.) for
cooling, cables, and to view LEDs
Sides Minimum of 50 mm (2 in.) for cooling
Rear Minimum of 15.3 mm (6 in.) for
cooling and power cord
Chapter 1. Introduction 9
Characteristic Specification
Operating Environment
Operating Temperature
10° - 40° C (50° - 104° F)
Operating Humidity
8% - 80%
Storage Temperature
1° - 60° C (33.8° - 140° F)
Storage Humidity
8% - 80%
Shipment Temperature
40°C - 60°C (104°F - 140°F)
Shipment Humidity
5% - 100%
10 8275-416 User’s Guide
Chapter 2. Accessing the 8275-416
You have several ways to physically make connection (connectivity) and access the
8275-416 . Once connected, you will want to initially configure the IP information
(either through the terminal interface or through DHCP or BootP), then choose
which user interface you want to use to manage it. Therefore, all interfaces support
configuring the 8275-416 and obtaining information from it, thus providing greater
flexibility in how you manage your 8275-416 . This chapter explains the ways you
can connect to your 8275-416 .
Connectivity Methods
There are two connectivity methods used to physically access the 8275-416 :
v Out-of-band connectivity, in which access to the 8275-416 is through the EIA 232
port.
v In-band connectivity, which is the ability to access the 8275-416 from a remote
station using the Ethernet network
Table 2 outlines the user interfaces that are available depending on your method of
connectivity.
Table 2. Connectivity Methods and Available User Interfaces
Connectivity Method Available User Interface
Out-of-band Terminal interface via the EIA 232 port
In-Band
(terminal directly attached, or remotely
attached to modem)
v Terminal interface via Telnet
v SNMP-based management interface
v Web-based management interface
Out-of-Band Connectivity
Out-of-band connectivity lets you access your 8275-416 through the EIA 232 port. It
can be either through a locally attached PC (personal computer) running VT100
terminal emulation software, or through a remotely attached PC running VT100
terminal emulation software.
Locally Attached Terminal
To establish out-of-band connectivity using a locally attached terminal, make the
physical connections and set up using the following procedure:
1. Attach one end of a null-modem cable to the EIA 232 port of the 8275-416 as
shown in Figure 6 on page 12, and the other end to the COM port of your PC
(see “Appendix C. Cable Pinout Diagrams” on page 79).
© Copyright IBM Corp. 1999 11
Figure 6. Out-of-Band Connectivity — Locally Attached Terminal
2.
Configure the VT100 terminal emulation application as follows:
v Baud rate: 19200
v Parity: None
v Data bits: 8
v Stop bits: 1
v Flow control: None
3. Log in to the terminal interface. The terminal interface requires you to log in with
a user name and password. The user name must have Read/Write status. The
admin
default user name is:
4. See “Appendix D. Interface Conventions for the Console” on page 83 for a
description of terminal interface key definitions. You may need to configure your
terminal emulation application to enable use of these keys.
, and the password is blanks (no password).
Remotely Attached Terminal
To establish out-of-band connectivity using a remotely attached terminal, make the
physical connections using the following procedure:
1. Unpack the modem and install it according to the manufacturer’s instructions.
2. Attach one of the serial cable (not provided) to the EIA 232 port of the 8275-416
and the other end to your modem as shown in Figure 7.
12 8275-416 User’s Guide
Figure 7. Out-of-Band Connectivity — Remotely Attached Terminal
3. Set up the modem that is attached to the 8275-416 by following these steps:
a. Connect the other end of the cable to the modem.
b. Configure the modem to use the same settings as those on your 8275-416 .
v Baud rate: 19200
v Parity: None
v Data bits: 8
v Stop bits: 1
v Flow control: None
c. Set up the remote modem and terminal.
d. Configuration command syntax varies from modem to modem. Make sure
that the modem has the following characteristics:
v Asynchronous mode
v Disable modem response
v Disable flow control (for example, AT \Q)
v Disable echo (for example, AT Q1)
v Autoanswer mode on second ring (for example, AT SO=2)
e. Setup the remote modem and terminal.
f. After configuring the modem, save the configuration.
g. Establish a modem link as described in the modem user documentation.
h. Log in to the terminal interface. The terminal interface requires you to log in
with a user name and password. The user name must have Read/Write
admin
status. The default user name is:
password).
i. See “Appendix D. Interface Conventions for the Console” on page 83 for a
description of terminal interface key definitions. You may need to configure
your terminal emulation application to enable use of these keys.
, and the password is blanks (no
4. In order to use in-band connectivity, the 8275-416 must be configured with IP
information (IP address, subnet mask, and default gateway). You can configure
IP information initially by using either of these methods:
v DHCP or BootP
v Terminal interface via the EIA 232 port.
5.
To configure the IP information, see “Chapter 3. Configuring your 8275-416” on
page 17 for details.
In-Band Connectivity - Telnet, Web, SNMP
Note: In order to use in-band connectivity, you must configure the 8275-416 with its
IP information (IP address, subnet mask, and default gateway). See
“Chapter 3. Configuring your 8275-416” on page 17 for configuring BootP or
DHCP and IP information for your 8275-416 .
In-band connectivity allows access to the 8275-416 using the data network (as
shown in Figure 8 on page 14).
Chapter 2. Accessing the 8275-416 13
Figure 8. In-Band Connectivity
Terminal Interface - Telnet
Telnet console management can be performed through an Ethernet port (In-band
connectivity). You must configure an Ethernet IP address before using Telnet
console management (Refer to “Chapter 3. Configuring your 8275-416” on page 17
for initially configuring IP information for your 8275-416 .
You can use any Telnet application that emulates a VT100 terminal to establish a
Telnet Console management session. Up to five concurrent Telnet sessions are
supported. For security, the Telnet session can be automatically logged off after a
certain time of inactivity. You configure the time of inactivity from 0 to 60 minutes;
the default is 5 minutes.
The terminal interface is menu driven and can be used to manage the 8275-416
through the EIA 232 port or a Telnet session. For security, a log in userid and
password is required. Multiple userids and associated passwords can be created.
Two levels of access privileges are supported: read/write and read-only.
See “Appendix D. Interface Conventions for the Console” on page 83 for a
description of the terminal keys. You may need to configure your terminal
application to enable use of these keys.
See “Chapter 4. Using the Terminal Interface” on page 25 for a description of the
terminal interface panels.
14 8275-416 User’s Guide
SNMP-Based Management Interface
The 8275-416 has an SNMP agent that supports SNMP Version 1 which allows it to
be managed by any SNMP-based application (for example, Nways Campus
Manager which supports the MIBs that the 8275-416 supports). MIBs supported by
the 8275-416 are shown in Table 3.
Table 3. MIBs Supported by the 8275-416 .
MIBs Supported
MIB-II (RFC 1213)
Definitions of Managed Objects for Bridges (RFC 1493)
Table 3. MIBs Supported by the 8275-416 . (continued)
MIBs Supported
IEEE 802.3 Ethernet MIB (RFC 1643)
RMON MIB (RFC 1757)
IBM 8275-416 MIB
The SNMP-based application must specify the appropriate community name that
the 8275-416 is configured to support. Real-time trap messages can be configured
to be sent to designated trap receivers. All configuration information on the switch
has read/write access via SNMP. All status information is also available via SNMP.
See “Chapter 4. Using the Terminal Interface” on page 25 for details about SNMP
support for the 8275-416 .
Web-Based Management Interface
The 8275-416 has a Web server that supports HTTP 1.1 and HTML 3.2 or later.
The Web browser must support HTTP 1.1 or HTML 3.2 or later.
The Web interface provides an interface to access and change 8275-416
parameters. Menus similar to those available through the terminal interface are also
displayed by the Web browser. To access the 8275-416 from a Web browser, you
must have configured the IP information for the 8275-416 . You will need a valid log
in userid and password. The accepted userids and passwords are the same as
those configured for the terminal interface.
See “Chapter 5. Using the Web Interface” on page 61 for starting and using the web
interface.
Chapter 2. Accessing the 8275-416 15
16 8275-416 User’s Guide
Loading...