IBM Nways 8260 User Manual
International Technical Support Organization
8260 Multiprotocol Intelligent Switching Hub
May 1995
GG24-4370-00
IBML
International Technical Support Organization
8260 Multiprotocol Intelligent Switching Hub
May 1995
GG24-4370-00
Take Note!
Before using this information and the product it supports, be sure to read the general information under
“Special Notices” on page xv.
First Edition (May 1995)
This edition applies to the 8260 Multiprotocol Intelligent Switching Hub family.
Order publications through your IBM representative or the IBM branch office serving your locality. Publications
are not stocked at the address given below.
An ITSO Technical Bulletin Evaluation Form for reader′s feedback appears facing Chapter 1. If the form has been
removed, comments may be addressed to:
IBM Corporation, International Technical Support Organization
Dept. 545 Building 657
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When you send information to IBM, you grant IBM a non-exclusive right to use or distribute the information in any
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Copyright International Business Machines Corporation 1995. All rights reserved.
Note to U.S. Government Users — Documentation related to restricted rights — Use, duplication or disclosure is
subject to restrictions set forth in GSA ADP Schedule Contract with IBM Corp.
Abstract
This document describes the IBM 8260 Multiprotocol Intelligent Hub. It provides
information about the 8260 architecture as well as how to install, configure and
manage the 8260 Ethernet and token-ring media modules.
This document was written for customers, systems engineers, network
professionals and technical support personnel. Some knowledge of local area
networks, token-ring and Ethernet architecture is assumed.
(327 pages)
Copyright IBM Corp. 1995 iii
iv 8260 Multiprotocol Intelligent Switching Hub
Contents
Abstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Special Notices
Preface
How This Document is Organized
Related Publications
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International Technical Support Organization Publications
Acknowledgments
Chapter 1. An Overview of the IBM 8260 Hub
1.1 Introduction
1.2 8260 Hardware Description
1.2.1 IBM 8260 Model 017
1.2.2 The Intelligent Cooling Subsystem
1.2.3 8260 Model 010
1.3 8260 Modules and Daughter Cards
1.3.1 Ethernet Modules
1.3.2 Token-Ring Modules
1.3.3 Management and Controller Modules
Chapter 2. Backplane Architecture
2.1 LAN Segments on the Backplane
2.2 Ethernet Segments on the Backplane
2.2.1 Digital Collision Detection
2.2.2 Analog Collision Detection
2.2.3 Statistics Collection
2.3 Token-Ring Segments on the Backplane
2.4 FDDI Segments on the Backplane
2.5 Network Allocations on the 8260 Backplane
2.5.1 Management Buses
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Chapter 3. 8260 Fault Tolerant Controller Module
3.1 8260 Fault Tolerant Controller Module Overview
3.1.1 The Controller Module Front Panel
3.1.2 Controller Module Fault Tolerance
3.1.3 Installing and Configuring the Fault Tolerant Controller Module
3.1.4 8260 Fault Tolerant Controller Module Considerations
Chapter 4. 8260 Distributed Management Architecture
4.1 8260 Distributed Management Architecture
4.1.1 I P Addressing for DMM
........................... 38
4.2 The Distributed Management Module (DMM)
4.2.1 Unpacking and Installing the DMM
4.2.2 DMM LED Indicators
4.2.3 Console and Auxiliary Ports
4.2.4 Configuring the DMM
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4.3 The EC-DMM (Ethernet Carrier - Distributed Management Module)
4.3.1 Installing the EC-DMM
4.3.2 EC-DMM LED Description
4.4 MAC Daughter Cards
Copyright IBM Corp. 1995 v
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4.4.1 Ethernet MAC Daughter Card (E-MAC) .................. 64
4.4.2 Token-Ring MAC Daughter Card (T-MAC)
4.5 Managing 8260 Using DMM and 8250 xMM
4.5.1 Managing 8260 with DMM
4.5.2 Managing 8260 with 8250 xMM
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4.6 Overview of Management and Control Commands
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Chapter 5. 8260 Intelligent Power Management Subsystem
5.1 Intelligent Power Management Subsystem
5.2 Power Class
5.3 Configuring 8260 Power Supplies
5.3.1 Non-Fault Tolerant Mode
5.3.2 Fault Tolerant Mode
5.4 Managing Power in the 8260
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5.4.1 Installing 8260 Module in an 8260 Managed by DMM
5.4.2 Installing 8260 Module in an 8260 Not Managed by DMM
5.4.3 Installing 8250 Module in a Hub Managed by DMM
5.4.4 Installing 8250 Module in a Hub Not Managed by DMM
5.5 Controlling Power to the 8260 Modules
5.6 Power Management Considerations
5.7 Power Management Scenarios
.......................... 86
5.8 Installing the 8260 Power Supply
Chapter 6. 8260 Intelligent Cooling Subsystem
6.1 Intelligent Cooling Subsystem
Chapter 7. 8260 Ethernet Modules
7.1 Ethernet LAN Overview
7.1.1 CSMA/CD
7.1.2 Frame Size
7.1.3 Data Integrity
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
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7.1.4 Ethernet Addressing Mode
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7.2 8260 Ethernet 24-Port 10Base-T Module
7.3 10Base-T Module Usage
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7.4 Configuring the 10Base-T Module
7.5 8260 Ethernet 20/40-Port 10Base-T Module
7.6 Configuring the 20/40-Port 10Base-T Modules
7.7 8260 Ethernet 10-Port 10Base-FB Module
7.8 10Base-FB Module Usage
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7.9 Configuring the 10Base-FB Module
7.10 8260 Ethernet Modules Summary
7.11 8260 Ethernet Security Daughter Card
7.11.1 Operation of Security Card
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7.11.2 Configuring the Security Module
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Chapter 8. 8260 Token-Ring Support
8.1 Token-Ring LAN Overview
8.1.1 Ring Operation
8.1.2 Ring Administration
8.1.3 Ring Errors
8.1.4 Differential Manchester Coding
8.1.5 Clock Recovery
8.1.6 Phase Jitter
8.2 8260 Backplane Signalling for TR Segments
8.3 Dual Phase Lock Loop
vi 8260 Multiprotocol Intelligent Switching Hub
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8.4 Jitter Attenuator Daughter Card (JADC) ................... 141
8.5 Passive Port Technology
8.6 Active Port Technology
8.6.1 Per-Port Switching on the Active Modules
8.6.2 Static Switch on the Per-Port Switching Modules
8.7 Signal Flow on the 8260 Token-Ring Modules
8.8 Speed Detection
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
8.8.1 Speed Detection on Active Modules
8.8.2 Speed Detection on Passive Modules
8.9 Beacon Recovery
8.9.1 Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
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8.9.2 Beacon Recovery in the 8250
8.9.3 Beacon Recovery in the 8260
8.9.4 Beacon Recovery on the Module Switching Modules
8.9.5 Beacon Recovery on the Per-port Switching Modules
8.10 Address-to-Port Mapping for Module Switching Modules
8.11 Address-to-Port Mapping for Per-Port Switching Modules
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8.12 IEEE 802.5C Recommended Practice for Dual Ring Wrapback
Reconfiguration
8.12.1 Trunk Wrapping on the Active Per-Port Switching Modules
8.12.2 Trunk Wrapping on the Active Module-Switching Modules
8.12.3 Merge Manager
8.12.4 Trunk Unwrapping on the Per-Port Switching Modules
8.12.5 Trunk Unwrapping on the Module-Switching Modules
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
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Chapter 9. 8260 Token-Ring Modules
9.1 Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
9.2 Configuring Token-Ring Network Parameters
9.3 8260 18-Port Active Per-Port Switching Module
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9.3.1 Configuring the 18-Port Active Per-Port Switching Module
9.4 8260 18-Port Active Module Switching Module
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9.4.1 Configuring the 18-Port Active Module Switching Module
9.5 8260 20-Port Passive Module Switching Module
9.5.1 Configuring the 20-Port Passive Module
9.6 8260 Dual Fiber Repeater Module
....................... 185
9.6.1 Configuring the Dual Fiber Repeater Module
Chapter 10. 8260 RMON Support
10.1 RMON Overview
10.1.1 Network Probes
10.1.2 RMON Manager
10.2 RMON Goals
10.2.1 Offline Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
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10.2.2 Preemptive Monitoring
10.2.3 Problem Detection and Reporting
10.2.4 Value Added Data
10.2.5 Multiple Managers
10.3 Standards
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10.4 Managing the Ethernet LAN Environment
10.4.1 Managing Ethernet LANs with RMON
10.5 Managing the Token-Ring LAN Environment
10.5.1 Managing Token-Ring LANs with RMON
10.6 Monitoring Functions Supported In 8260
10.6.1 Monitoring Functions Supported by E-MAC
10.6.2 Monitoring Functions Supported by T-MAC
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Contents vii
10.6.3 SHOW COUNTER Command for Ethernet Networks ......... 215
10.6.4 Collecting and Displaying RMON Groups Using E-MAC
10.6.5 SHOW COUNTER Command for Token-Ring Networks
10.6.6 Collecting and Displaying RMON Groups Using T-MAC
10.7 Surrogate Functions Supported by T-MAC
10.7.1 Using T-MAC Surrogate Functions
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10.7.2 Displaying the Information Collected by Surrogate Features
10.8 DOT5_Group Support by T-MAC
10.8.1 Using DOT5_Group Functions
10.9 Summary of T-MAC Monitoring Functions
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Chapter 11. 8260 Multiprotocol Interconnect Module
11.1 Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
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11.2 Power Requirements for Multiprotocol Interconnect Module
11.3 Bridging Functions
11.4 Routing Functions
11.4.1 IP Routing Support
11.4.2 IPX Routing Support
11.4.3 DECnet Phase IV Routing Support
11.5 Configuring Multiprotocol Interconnect Module
11.6 Local Management System (LMS)
11.7 SNMP Support
11.8 Configuring the Interconnect Module Using LMS
11.8.1 Configuring System Wide Parameters
11.8.2 Configuring Port Parameters
11.8.3 Port Configuration Summary
11.8.4 Configuring for Bridging Support
11.8.5 Filtering for Bridging Functions
11.8.6 Destination Address Filtering
11.8.7 Configuring for Routing Functions
11.8.8 Configuring for IP Routing
11.8.9 I P Security
11.8.10 Configuring for IPX Routing
11.9 Monitoring Multiprotocol Interconnect Module
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Appendix A. Power Requirements for 8250/8260 Modules
A.1 Power Requirements for 8250 Ethernet Modules
A.2 Power Requirements for 8250 Token-Ring Modules
A.3 Power Requirements for 8250 FDDI Modules
A.4 Power Requirements for 8250 Internetworking Modules
Index
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viii 8260 Multiprotocol Intelligent Switching Hub
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Figures
1. IBM 8260 Model 017 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Components of the 8250 Adapter Kit
3. Enhanced TriChannel Bus
4. 8260 ShuntBus
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5. Backplane Path Display for Ethernet Segments
6. Token-Ring Backplane Path Display
7. ShuntBus and Token-Ring
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8. Backplane Path Display for FDDI Segments
9. TriChannel Backplane Network Allocation
10. ShuntBus Backplane Network Allocation
11. The Backplane Relationship between TriChannel and ShuntBus
12. 8260 Management Buses
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13. Front View of the Controller Module
14. Management Schematic
15. DMM Front Panel
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16. Jumpering for the DMM DB-9 Ports
17. DMM Login Message
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18. Changing Superuser Password
19. Defining New DMM Superuser
20. Display of Defined DMM Users
21. Forced Termination of Existing DMM Users
22. Output from Show Terminal Command
23. Set Device Name Command for DMM
24. Set Device Location Command for DMM
25. Set Device Contact Command for DMM
26. Output from Show ARP_Cache Command with Canonical Setting
27. Output from Show ARP_Cache Command with Non-Canonical Setting
28. Output from Show Device Command
29. Output from Show IP Command
30. Output from Show Community Command
31. EC-DMM Front Panel
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32. Jumpering for the EC-DMM DB-9 Ports
33. 24-Port Ethernet Module with E-MAC
34. EC-DMM Slots and Subslots
35. EC-DMM Display
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36. EC-DMM with Up to 6 EMACs
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37. Assigning E-MAC to a Segment with an Active E-MAC
38. Output from E-MAC Display
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39. Assigning T-MAC to a Segment with an Active T-MAC
40. Output from T-MAC Display
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41. A Sample of Hierarchical Structure Command
42. 8260 with 4 Power Supplies
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43. Set Power Class Command for 8250 Modules
44. Priorities of Modules to Be Powered-Up or Powered-Down
45. Output from Show Power Class Command
46. Output from Show Hub Command
47. Output from Show Power Budget Command
48. Output from Show Power Mode Command
49. Load Sharing Power Supplies
50. Output from Show Inventory Command
51. Installing 8260 Modules in an 8260 Managed by DMM
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Copyright IBM Corp. 1995 ix
52. Installing 8260 Modules in an 8260 Not Managed by DMM ........ 83
53. Installing 8250 Modules in an 8260 Managed by DMM
54. Installing 8250 Modules in an 8260 Not Managed by DMM
55. Messages Received when a Power Failure Occurs
56. Using the SHOW HUB Command
57. Using the SHOW POWER MODE Command
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58. Messages Received when the Power Mode Is Changed
59. Messages Received upon a Recovery of the Power Supply
60. 8260 Fan Units
61. Output from Show Hub Command
62. Output from Show Power Mode Command
63. 8260 Cooling Zones and Power Classes
64. Flow Chart for an Overheat Condition
65. Front View of 24-Port 10Base-T Module
66. 24-Port 10Base-T Module Side View
67. 24-Port 10Base-T DIP Switches
68. 24-Port 10Base-T Module Usage
69. Front View of 20/40-Port 10Base-T Modules
70. 20/40-Port 10Base-T Module Side View
71. 20/40-Port 10Base-T DIP Switches
72. Front View of 10-Port 10Base-FB Module
73. 10-Port 10Base-FB Module Side View
74. 10-Port 10Base-FB DIP Switches
75. 10-Port 10Base-FB Module Usage
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76. Configuring Port Redundancy for 8260 Ethernet Modules
77. Default Security Settings
78. Network Security Address Table
79. Ethernet Security Intruder Table
80. Differential Manchester Coding
81. Self-Shorting Relays on the ShuntBus
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82. 8260 Backplane Signalling for 4 Mbps Operation
83. 8260 Backplane Signalling for 16 Mbps Operation
84. Components of Dual Phase Lock Loop
85. DPLL Implementation on Active Ports
86. Components of DPLL Implemented on JADC
87. Token-Ring Per-Port Switching
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88. Static Switch Display for Active Per-Port Switching Ports
89. Switching Ports with Enabled Static Switch
90. Port Switching with Source Routing Bridges
91. Port Display for Token-Ring Passive Ports
92. Show Device Command for TRMM
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93. Recovery ASIC in Module Switching Module
94. Recovery ASIC in Per-Port Switching Module
95. Display Output for 20-Port Passive Module
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96. Display Output for 18-Port Active Per-Port Switching Module
97. Beacon Recovery on the Module Switching Modules
98. Address-to-Port Map Display for a Module Switching Module
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99. Address-to-port Mapping on Module Switching Modules for Fan-Out
Attached Devices
100. Address-to-Port Map Display for Fan-Out Attached Devices
101. Address-to-Port Map Display for MAC-less Stations
102. Address-to-Port Mapping on Per-Port Switching Modules
103. Address-to-Port Map Display for a Per-Port Switching Module
104. Dual-Ring Topology
105. Wrapback in Dual-Ring Topology
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x 8260 Multiprotocol Intelligent Switching Hub
106. Trunk Wrapping in Active Per-Port Switching Module .......... 169
107. Trunk Wrapping in Active Per-Port Switching Module
108. Front View of 18-Port Active Per-Port Switching Module
109. 18-Port Active Per-Port Switching Module Side View
110. Onboard Lobe/Trunk Jumpers on 18-Port
111. Front View of 20-Port Passive Module
112. 20-Port Passive Module Module Side View
113. Front View of Dual Fiber Repeater Module
114. Dual Fiber Repeater Module Side View
115. O SI Stack
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116. A n Ex ample of RMON Implementation
117. Status Display for DMM Interfaces
118. Show Counter Ethernet
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119. Show Counter Interface for Ethernet Segment
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120. Show Counter Repeater for Ethernet Segment
121. Show Counter RMON Hosts
122. RMON Host Control Table
123. RMON Host Statistics Display
124. Show Counter for Token_Ring Segments
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125. Show Counter Interface for Token-Ring Segment
126. Show Counter RMON Hosts for Token_Ring Segments
127. Show Counter RMON Ring_station Using ″ring″ Option
128. Show Counter RMON Ring_station Using ″all″ Option
129. Show Counter RMON TR_MAC_LAYER
130. Show Counter RMON TR_MAC_LAYER
131. Show Counter RMON TR_SOURCE_ROUTING
132. Show Module Command for T-MAC
133. Displaying the Status of Surrogate Features
134. Displaying the Status of REM Options
135. Displaying the Status of CRS Options
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136. Displaying the Status of CRS Stations Options
137. Front View of the Multiprotocol Interconnect Modules
138. LMS Initial Panel
139. LMS Short Cut Commands
140. LMS Jump Table
141. L MS C onfiguration Panel
142. LMS System Parameters Panel
143. LMS Trap Destination Panel
144. LMS Download Parameters Panel
145. LMS Port Menu Panel
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146. LMS Physical Port List for Ethernet Connections
147. LMS Physical Ports List for Token-Ring I/O Cards
148. LMS Physical Port Protocol Configuration Panel
149. LMS Logical Port Panel
150. LMS Bridge Menu Panel
151. LMS Bridging System Parameters
152. Transparent Bridging Port Parameters Panel
153. L MS STP System Parameters Panel
154. LMS STP Port Parameters Panel
155. LMS Source Routing Port Parameter
156. LMS Conversion System Parameters Panel
157. L MS C onfiguration Panel
158. LMS Custom Filter Test Table Panel
159. LMS Custom Filter Statement Table
160. LMS Protocols Menu Panel
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..................... 277
.......................... 278
.......... 169
......... 175
........... 176
.............. 217
............. 224
......... 225
......... 226
.......... 227
.............. 236
.......... 241
............. 257
............ 258
............. 259
Figures xi
161. LMS IP Panel .................................. 279
162. LMS IP Port Address Table Panel
163. LMS IP System Parameters Panel
164. LMS IP Port Parameter Panel
165. LMS IP Forwarding Table Panel
166. LMS IP Net To Media Table
.......................... 286
167. LMS Boothelper Parameters Panel
168. LMS OSPF Menu Panel
............................ 288
169. LMS OSPF System Parameter Panel
170. LMS OSPF Interface Table Panel
171. LMS OSPF Area Table Panel
172. LMS OSPF Area Default Metric Table
173. LMS OSPF Area Address Range Panel
174. LMS OSPF Interface Metric Table
175. LMS OSPF Virtual Interface Table Panel
176. LMS OSPF Neighbors Panel
177. LMS OSPF RIP Filter Table Panel
178. L MS C onfiguration Panel
........................... 300
179. L MS OS PF D efault RIP Convert Table Panel
180. LMS OSPF Static Filter Table Panel
181. L MS C onfiguration Panel
........................... 303
182. LMS OSPF Default Static Convert Table Panel
183. LMS IP Security Table Panel
184. LMS IP Security Access Panel
185. LMS IPX Menu Panel
.............................. 308
186. LMS IPX System Parameters Panel
187. LMS IPX Port Parameters Panel
...................... 280
...................... 281
........................ 283
....................... 284
..................... 287
.................... 289
....................... 290
......................... 293
.................... 294
................... 295
...................... 296
.................. 297
......................... 298
...................... 299
................ 301
..................... 302
.............. 304
......................... 305
........................ 307
..................... 309
....................... 310
xii 8260 Multiprotocol Intelligent Switching Hub
Tables
1. Components of the 8250 Adapter Kit for 8260 . . . . . . . . . . . . . . . . 6
2. Ethernet Pins on the 8260 Backplane
3. 8260 controller Module LED Meaning
4. DMM Status LED
5. DMM LCD Display
6. Console Port Pinouts
7. Auxiliary Port Pinouts
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
............................... 41
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8. Commands Required to Set Up the Modem for the Console Port
9. DMM Interface Configuration Quick Reference
10. DMM Terminal Defaults and Options
11. EC-DMM Status LED
12. EC-DMM LCD Display
............................... 60
.............................. 61
13. Power Available to Modules in Non-Fault Tolerant Mode
14. Power Available to Modules in Fault Tolerant Mode
15. Equivalent Distances for 24-Port 10Base-T Module
16. 24-Port 10Base-T Module LED Descriptions
17. 24-Port 10Base-T Module DIP Switch Settings
18. Equivalent Distances for 20/40 10Base-T Modules
19. 20/40-Port 10Base-T Module LED Descriptions
20. 20/40-Port 10Base-T Module DIP Switch Settings
21. Maximum Distances for 20/24-Port 10Base-T Modules
22. Equivalent Distances for Ethernet 10Base-FB Module
23. 10-Port 10Base-FB Module LED Descriptions
24. 10-Port 10Base-FB Module DIP Switch Settings
25. 8260 Ethernet Modules Summary
26. Lobe Distances Using 8260 Active TR Modules
27. Lobe Distances Using 8260 Passive TR Modules
28. 18-Port Active Per-Port Switching Module LED Descriptions
29. 18-Port Active Per-Port Switching Module
30. 20-Port Passive Module LED Descriptions
31. Dual Fiber Repeater Module LED Descriptions
32. MIB Structure for RFC 1271 - RMON MIB for Ethernet
. . . . . . . . . . . . . . . . . . . . . 17
. . . . . . . . . . . . . . . . . . . . . 31
. . . . 42
. . . . . . . . . . . . . . . 43
..................... 43
......... 78
............ 79
............ 100
................ 101
............... 103
............ 107
.............. 108
............. 110
.......... 112
.......... 114
............... 115
.............. 117
...................... 120
.............. 143
............. 143
...... 176
................. 177
................. 182
.............. 186
.......... 196
33. MIB Structure for RFC 1513 - Token-Ring Extensions to the RMON MIB 202
34. Functions Supported by T-MAC V2.0
35. Functions Performed by T-MAC V2.0
36. Interconnect Module LED Description
37. Power Requirements for Interconnect Module IP Cards
38. Watts to Units Conversion Table
39. Custom Filter Test Table
............................ 276
40. Custom Filter Statement Table
41. Power Requirements for 8250 Ethernet Modules
42. Power Requirements for 8250 Token-Ring Modules
43. Power Requirements for 8250 FDDI Modules
44. Power Requirements for 8250 FDDI Modules
..................... 237
.................... 237
.................... 242
......... 242
....................... 243
........................ 278
............. 315
........... 316
............... 316
............... 317
Copyright IBM Corp. 1995 xiii
xiv 8260 Multiprotocol Intelligent Switching Hub
Special Notices
This publication is intended to help both IBM Customers and IBM System
Engineers to install and configure the IBM 8260 Multiprotocol Intelligent
Switching Hub. It contains description of the 8260 architecture as well as
information about how to install, configure and manage the the 8260 Ethernet
and token-ring modules. The information in this publication is not intended as
the specification of any programming interfaces that are provided by IBM 8260
Multiprotocol Intelligent Switching Hub. See the PUBLICATIONS section of the
IBM Programming Announcement for the 8260 for more information about what
publications are considered to be product documentation.
References in this publication to IBM products, programs or services do not
imply that IBM intends to make these available in all countries in which IBM
operates. Any reference to an IBM product, program, or service is not intended
to state or imply that only IBM′s product, program, or service may be used. An y
functionally equivalent program that does not infringe any of IBM′s intellectual
property rights may be used instead of the IBM product, program or service.
Information in this book was developed in conjunction with use of the equipment
specified, and is limited in application to those specific hardware and software
products and levels.
IBM may have patents or pending patent applications covering subject matter in
this document. The furnishing of this document does not give you any license to
these patents. You can send license inquiries, in writing, to the IBM Director of
Licensing, IBM Corporation, 500 Columbus Avenue, Thornwood, NY 10594 USA.
The information contained in this document has not been submitted to any
formal IBM test and is distributed AS IS. The information about non-IBM
(VENDOR) products in this manual has been supplied by the vendor and IBM
assumes no responsibility for its accuracy or completeness. The use of this
information or the implementation of any of these techniques is a customer
responsibility and depends on the customer′s ability to evaluate and integrate
them into the customer′s operational environment. While each item may have
been reviewed by IBM for accuracy in a specific situation, there is no guarantee
that the same or similar results will be obtained elsewhere. Customers
attempting to adapt these techniques to their own environments do so at their
own risk.
Any performance data contained in this document was determined in a
controlled environment, and therefore, the results that may be obtained in other
operating environments may vary significantly. Users of this document should
verify the applicable data for their specific environment.
Reference to PTF numbers that have not been released through the normal
distribution process does not imply general availability. The purpose of
including these reference numbers is to alert IBM customers to specific
information relative to the implementation of the PTF when it becomes available
to each customer according to the normal IBM PTF distribution process.
The following terms are trademarks of the International Business Machines
Corporation in the United States and/or other countries:
Copyright IBM Corp. 1995 xv
AIX AIX/6000
IBM NetView
RS/6000
The following terms in this publication, are trademarks of other companies:
Windows is a trademark of Microsoft Corporation.
PC Direct is a trademark of Ziff Communications Company and is used by IBM
Corporation under license.
UNIX is a registered trademark in the United States and other countries licensed
exclusively through X/Open Company Limited.
DECnet, DEC VT100 and DEC VT220 Digital Equipment Corporation
Chipcom, ONline, ONcore Chipcom Corporation
Novell, NetWare and IPX Novell Corporation
Retix Retix Corporation
xvi 8260 Multiprotocol Intelligent Switching Hub
Preface
This document is intended to assist customers and IBM system engineers to
implement local area networks based on the IBM 8260 Multiprotocol Intelligent
Switching Hub. It contains description of the 8260 architecture as well as
information about how to install, configure and manage the the 8260 Ethernet
and token-ring modules.
How This Document is Organized
The document is organized as follows:
•
Chapter 1, “An Overview of the IBM 8260 Hub”
This chapter is an introduction to the IBM 8260 Multiprotocol Intelligent
Switching Hub.
•
Chapter 2, “Backplane Architecture”
This chapter provides details of the 8260 backplane architecture.
•
Chapter 3, “8260 Fault Tolerant Controller Module”
This chapter provides information about the 8260 fault-tolerant controller
module.
•
Chapter 4, “8260 Distributed Management Architecture”
This chapter describes the 8260 Distributed Management architecture.
•
Chapter 5, “8260 Intelligent Power Management Subsystem”
This chapter describes the 8260 Intelligent Power Management Subsystem.
•
Chapter 6, “8260 Intelligent Cooling Subsystem”
This chapter describes the 8260 Intelligent Cooling Subsystem.
•
Chapter 7, “8260 Ethernet Modules”
This chapter provides detailed description and configuration information
about the 8260 Ethernet modules.
•
Chapter 8, “8260 Token-Ring Support”
This chapter provides a description of the advanced features supported by
the 8260 token-ring modules.
•
Chapter 9, “8260 Token-Ring Modules”
This chapter provides detailed description and configuration information
about the 8260 token-ring modules.
•
Chapter 10, “8260 RMON Support”
This chapter provides an introduction to RMON as well as the RMON support
by E-MAC and T-MAC daughter cards.
•
Chapter 11, “8260 Multiprotocol Interconnect Module”
This chapter provides details of routing and bridging support provided by the
8260 Multiprotocol Interconnect module.
•
Appendix A, “Power Requirements for 8250/8260 Modules”
Copyright IBM Corp. 1995 xvii
Related Publications
The publications listed in this section are considered particularly suitable for a
more detailed discussion of the topics covered in this document.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
This appendix provides information about the power requirements of the
8250 modules.
IBM 8260/8250 PSPG
IBM 8260 Installation Guide
8260 TR Active Media Module Port Switching Guide
8260 Network Interconnect Module
IBM 8260 (DMM) User′s Guide
IBM 8260 Ethernet 24-Port 10BASE-T User′s Guide
IBM 8260 Ethernet Per Port User′s Guide
IBM 8260 Ethernet Security Module User′s Guide
8260 DMM Commands Guide
IBM 8260 DMM Quick Reference Commands
Passive Media Module User′s Guide
8260 Network Interconnect Module Reference Guide
8260 A4-FB100 Installation and User′s Guide
IBM 8260 A-CP Switch Installation and User′s Guide
,GA33-0285
, SA33-0251
, SA33-0256
, SA33-0258
, SA33-0259
, SA33-0260
, SA33-0261
, SA33-0262
, SA33-0275
, SA33-0276
, SA33-0286
, SA33-0288
, SA33-0324
, SA33-0326
International Technical Support Organization Publications
•
IBM 8250 Intelligent Hub and IBM Hub Management Program/6000
GG24-4033
A complete list of International Technical Support Organization publications, with
a brief description of each, may be found in:
International Technical Support Organization Bibliography of Redbooks,
GG24-3070.
To get listings of ITSO technical bulletins (redbooks) online, VNET users may
type:
TOOLS SENDTO WTSCPOK TOOLS REDBOOKS GET REDBOOKS CATALOG
How to Order ITSO Technical Bulletins (Redbooks)
IBM employees in the USA may order ITSO books and CD-ROMs using
PUBORDER. Customers in the USA may order by calling 1-800-879-2755 or by
faxing 1-800-284-4721. Visa and Master Cards are accepted. Outside the
USA, customers should contact their IBM branch office.
Customers may order hardcopy redbooks individually or in customized sets,
called GBOFs, which relate to specific functions of interest. IBM employees
and customers may also order redbooks in online format on CD-ROM
collections, which contain the redbooks for multiple products.
,
xviii 8260 Multiprotocol Intelligent Switching Hub
Acknowledgments
The advisor for this project was:
Mohammad Shabani
International Technical Support Organization, Raleigh Center
The authors of this document are:
Mohammad Shabani
International Technical Support Organization, Raleigh Center
Nongyao Buranarachada
IBM Thailand
Mike Welsh
IBM Australia
This publication is the result of a residency conducted at the International
Technical Support Organization, Raleigh Center.
Thanks to the following people for the invaluable advice and guidance provided
in the production of this document:
Shawn Walsh
International Technical Support Organization, Raleigh Center
Haissam Alaiwan
8260 Product Planner, La Gaude
Theodore A. Makranczy
IBM Education and Training, USA
James J. Haefele
IBM Education and Training, USA
Benton R. Hobgood
IBM 8260 Development, RTP
Bradley S. Trubey
IBM 8260 Development, RTP
Victoria S. Thio
IBM 8260 Development, RTP
Walter G. Habermas
US National Technical Support, RTP
Preface xix
xx 8260 Multiprotocol Intelligent Switching Hub
Chapter 1. An Overview of the IBM 8260 Hub
This chapter is an introduction to the IBM 8260 Multiprotocol Intelligent Switching
Hub. It is intended to provide the reader with an overview of the following:
•
Hardware description
•
Backplane architecture
•
Fault-tolerant power subsystem
•
Intelligent cooling subsystem
•
Distributed management architecture
•
Hot pluggability
•
Fault-tolerant controller module
•
Compatibility with the 8250 family
1.1 Introduction
The 8260 is an intelligent managed hub which provides the platform to build local
area networks using various types of cabling systems (such as STP, UTP, fiber
and coax) and different types of LAN protocols (such as token-ring, Ethernet, and
FDDI). Additionally, the 8260 provides platform for the implementation of
high-speed networks based on Asynchronous Transfer Mode (ATM) technology.
The 8260 is a rack-mountable hub and depending on the model it allows you to
install up to 17 payload
modules
. These modules can be a combination of media
and management modules providing you with the flexibility to design networks
addressing the individual needs of your organization.
Media and management modules can be installed or removed from the 8260,
while the hub is operational. This allows you to modify the configuration of the
network with minimal disruption to the users.
The 8260 provides the room to install up to two controller modules. The second
controller module will be used to provide backup for the primary controller
module.
In addition to a wide range of 8260 media and management modules which are
specifically designed to take advantage of the features offered by the new
chassis, the 8260 supports all of the media and management modules from the
8250 (but not its controller module). This provides you with the ability to protect
your investment in the 8250 modules.
Note: As the 8260 is taller than the 8250, an optional adapter kit is required to
install the 8250 modules in an 8260.
The 8260 is designed to be a stand-alone unit or to be mounted in a standard 19″
rack. The 8260 is shipped with a rack mounting kit, a rubber feet kit and a cable
tray assembly.
When you order the 8260, the following components will be included in the 8260
chassis which is shipped to you:
•
One controller module
Copyright IBM Corp. 1995 1
•
One power supply
•
One power supply bay cover
•
One AC power cord
•
Three fan units
•
One cable tray
•
One rack mount kit
•
One rubber feet kit
•
Six blank dual-slot filler plates
•
Three blank single-slot filler plates
Additionally, you can order the following features to be included in your 8260:
•
Up to three additional power supplies for 8260 Model 017 and Model 17 A or
up to two additional power supplies for the 8260 Model 010.
•
8250 adapter kit
− Distributed Management Module (DMM)
− Ethernet Carrier Distributed Management Module (EC-DMM)
− Ethernet Media Access Control (E-MAC) daughter card
− Token-ring Media Access Control (T-MAC) daughter card
•
Ethernet Modules:
− 8260 Ethernet 24-port 10Base-T module
− 8260 Ethernet 20-port 10Base-T module
− 8260 Ethernet 40-port 10Base-T module
− 8260 Ethernet 10-port 10Base-FB module
− 8260 Multiprotocol Interconnect module
− 8260 Ethernet Security daughter card
•
Token-ring modules:
− 18 port active per-port switching module
− 18 port active module-switching module
− 20 port passive module-switching module
− Dual fiber repeater module
− Jitter Attenuator daughter card
•
ATM modules:
− ATM Control Point and Switch module
− 4-port ATM Concentrator module
Note: This book will not discuss the ATM components of the 8260.
The 8260 can be managed out-of-band using an ASCII console attached locally or
via modem to the management module. Additionally, you may manage the 8260
via SNMP using the Hub Manager Program for AIX.
The following sections provide an overview of the various components of the
8260.
2 8260 Multiprotocol Intelligent Switching Hub
1.2 8260 Hardware Description
There are three models of the 8260:
•
8260-017
•
8260-010
•
8260-17A
1.2.1 IBM 8260 Model 017
The 8260 Model 017 is a 17-slot module which allows you to install any
combination of 8260 and 8250 modules (except the 8250 Controller module) to set
up token-ring, Ethernet and/or FDDI networks. Additionally, it can be upgraded
with the ATM backplane to allow you to set up an ATM network.
The 8260 Model 017 chassis is made up of 5 main areas:
•
The backplane
•
The payload area
•
The Controller module slots
•
The intelligent power subsystem
•
The intelligent cooling subsystem
Figure 1 on page 4 provides a view of an 8260 multiprotocol intelligent switching
hub with both 8250 and 8260 modules installed.
1.2.1.1 8260 Backplane
The 8260 Model 017 has two standard backplane buses which are used to
provide you with the ability to configure token-ring, Ethernet, and/or FDDI
network segments. These two backplane buses are:
•
Enhanced TriChannel - Allows you to configure the following:
− Three Ethernet segments or
− Up to 7 token-ring segments or
− Up to 4 FDDI segments
You may also have a mixture of segments using different protocols. In that
case, the maximum number of permitted segments will depend on the
configuration of your hub.
•
ShuntBus - Allows you to configure the following:
− Two Ethernet segments and
− 10 token-ring segments (or 4 FDDI segments)
The Enhanced TriChannel and the ShuntBus are fully described in Chapter 2,
“Backplane Architecture” on page 13.
Chapter 1. An Overview of the IBM 8260 Hub 3
Figure 1. IBM 8260 Model 017
1.2.1.2 Payload Area
The payload area provides the housing for 17 media and management modules.
In addition to the 8260 module, you may install all the 8250 modules (except the
Controller module) in an 8260. Once these modules are installed on the 8260,
they will be connected to the backplane.
Certain modules provide you with
to connect different ports on the same module to different backplane segments.
Other modules are
the module must be connected to the same network segment. The per-port
switching capability is available for both Ethernet and token-ring.
Since the 8260 modules are taller than the 8250 modules, when you install one or
more 8250 modules in the 8260 multiprotocol intelligent switching hub, you must
use the
kit enables you to install up to 4, 9 or 16 single-slot 8250 modules or a mixture of
single-slot and dual-slot 8250 modules.
The 8250 adapter kit consists of the following:
8250 Adapter Kit
4 8260 Multiprotocol Intelligent Switching Hub
per-port switching
module-switching
. Depending on the kit that you order, the 8250 adapter
modules, which means that all the ports on
capability, which allows you
•
Right Boundary Adapter: This adapter is a full length adapter and occupies
one slot. Installation of this adapter results in 16 slots remaining available in
the 8260 for the installation of media and management modules. It is
recommended that you install this adapter in slot 17. The reason for this is
that if an 8250 management module becomes the master management
module, it will always see the Controller module installed in slot 17.
Therefore, if there is any other module installed in this position, it will not be
recognized by the xMM.
Note: If a DMM is the master management module, it will always be able to
recognize the module installed in slot 17.
•
Left Boundary Adapter: This adapter will be installed on the left boundary of
the area occupied by the 8250 modules. The top portion of this adapter
provides a filler plate, while the bottom-portion will provide you with the
room to install an 8250 module.
•
Dual-slot Top Filler: This adapter provides the filler plate for two slots of the
8260 providing you with the room to install two single-slot (or one dual-slot)
8250 module.
•
Single-slot Top Filler: This adapter provides the filler plate for one slot of the
8260 providing you with the room to install a single-slot 8250 module. Note
that two of these adapters can be used to install a dual-slot 8250 module.
The components of the 8250 adapter kit are shown in Figure 2.
Figure 2. Components of the 8250 Adapter Kit
Table 1 on page 6 shows the quantity of each component for the various 8250
adapter kits:
Chapter 1. An Overview of the IBM 8260 Hub 5
Table 1. Components of the 8250 Adapter Kit for 8260
Adapter kit Component 4-slot Feature 9-slot Feature 16-slot
Feature
Left Boundary Adapter 1 1 1
Right Boundary Adapter 1 1 1
Dual-Slot Top Filler 1 3 7
Single-Slot Top Filler 1 2 1
Dual-Slot Module Ejector Blocks 4 9 16
8250 Module Blank Faceplate 3 8 15
1.2.1.3 Fault-Tolerant Controller Module Slots
The Controller module provides all the clocking signals for the 8260. It is also
used to provide management of the power subsystem and the cooling
subsystem.
The 8260 chassis has two dedicated slots for the use of the Fault-Tolerant
Controller modules. These are referred to as slots 18 and 19. The 8260 Model
17 arrives with 1 Controller module as standard which is required for the
operation of the 8260. You may install a second Controller module which will be
used to back up the primary Controller module in case of failure. Fault tolerance
is established when there are two Controller modules installed. Either module
may be the master but in the event of the master Controller module failing and
will
the standby Controller module taking over, the network
be disrupted.
1.2.1.4 The Intelligent Power Subsystem
The power subsystem provides an easy access power bay which can support up
to four load-sharing, high capacity, managed power supplies. The 8260 Model
017 arrives with one power supply as standard and you may optionally install
three additional power supplies. Features of the power subsystem are:
•
Accessibility
The power bay is easily accessed from the front of the 8260.
•
Hot pluggability
You may install or remove power supplies while the hub is operating from
the other installed power supplies.
•
High capacity power supplies
Each power supply provides up to 295 watts of power.
•
Load sharing capability
The power consumption is evenly distributed over all the power supplies.
•
Power management
Using a combination of the DMM and the Controller module the power
subsystem can be monitored and controlled in either fault tolerant or
non-fault tolerant mode.
All of these features add up to a true seamless redundancy of the power
subsystem. The intelligent power subsystem is fully described in Chapter 5,
“8260 Intelligent Power Management Subsystem” on page 73.
6 8260 Multiprotocol Intelligent Switching Hub
1.2.2 The Intelligent Cooling Subsystem
The cooling subsystem consists of 3 fans, each of which cools a specific area of
the hub. Each of the fans has a sensor to detect a slow or stopped condition and
a temperature sensor to detect an over temperature condition. In conjunction
with the Controller module and the DMM the hub environment can be monitored
and controlled for over temperature conditions. Fan and Temp LEDs on the
Controller module can also alert the user to potential problems. The intelligent
cooling subsystem is described in detail in Chapter 6, “8260 Intelligent Cooling
Subsystem” on page 91.
1.2.2.1 Distributed Management Architecture
To fully manage the 8260 and the installed modules, the 8260 uses a distributed
management architecture. In this architecture, the various tasks of managing
the various elements of the hub are distributed across the following elements:
•
Distributed management module
•
MAC daughter cards
•
Controller module
There are 2 types of distributed management module (DMM):
•
Stand-alone DMM
•
EC-DMM
In terms of management functions, DMM and EC-DMM are identical. The only
difference between these two cards is their ability to house Ethernet MAC
daughter cards.
The DMM, along with the fault-tolerant Controller module, manages and controls
the 8260 hub and its modules. However, to perform certain management
functions such as network traffic monitoring, there is a need for a daughter card
to assist DMM. There are two types of daughter cards:
•
•
The combination of DMM and daughter cards provides a cost efficient
management architecture that consolidates media management into a single
card, while distributing network monitoring across a series of protocol dependent
daughter cards. Detailed information about the distributed management
architecture of the 8260 and the management modules and daughter cards is
provided in Chapter 4, “8260 Distributed Management Architecture” on page 35.
1.2.3 8260 Model 010
The 8260 Model 010 is a 10-slot intelligent hub that shares many of the advanced
features of the 8260 Model 017. I t differs from the Model 017 in the following
areas:
•
•
Ethernet Media Access (E-MAC) daughter card
Token-ring Media Access (T-MAC) daughter card
It offers 10 payload slots, rather than 17.
It allows up to three power supplies, rather than four. The basic 8260 Model
010 is shipped with a single power supply, and up to two additional power
supplies can be added later. The same power supplies are used on both
models.
Chapter 1. An Overview of the IBM 8260 Hub 7
•
Model 010 is shorter than the Model 017 (498 mm versus 673 mm), but has
the same depth and width.
•
Power supplies in the Model 010 are housed on the left side of the chassis
whereas in the Model 017 they are housed in the bottom section.
The 8260 Model 010 shares with the Model 017 all of the following benefits:
•
Supports three fan units.
•
Supports two Controller module slots for redundancy. The basic model is
shipped with one Controller module, and a second Controller module can be
added for redundancy.
•
It uses the same chassis accessories and chassis features:
− Rack mount kit
− Cable management tray
− Power supplies
− Fan units
− Controller module
•
Like the 8260 Model 017, the 8260 Model 010 is field upgradeable to support
ATM.
By sharing same chassis elements, networks can be built using a mixture of
Model 017s and Model 010s without an overhead for managing accessories and
spare parts.
Note
In the remainder of this book, the various components of the IBM 8260 are
explained assuming an 8260 Model 017.
1.3 8260 Modules and Daughter Cards
This section will give an overview of currently available 8260 modules and
daughter cards and a brief description of them. Details of individual modules,
the necessary steps required to configure them, and some testing scenarios will
be described in the following chapters. Currently, the available 8260 modules
and daughter cards can be classified as follows:
1.3.1 Ethernet Modules
1.3.1.1 8260 Ethernet 24-Port 10Base-T Module
The 8260 Ethernet 24-port 10Base-T module is single-slot module which provides
two Telco connectors for supporting 24 Ethernet ports. This module provides
per-port switching capability which enables you to connect each port to any of
the eight Ethernet segments on the backplane.
8 8260 Multiprotocol Intelligent Switching Hub
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