Chapter 8 Isl Trunking; Link Issues - Brocade Communications Systems StoreFabric SN6500B Troubleshooting Manual
Brocade fabric os troubleshooting and diagnostics guide v7.1.0 (53-1002751-01, march 2013)
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Also See for StoreFabric SN6500B:
- User manual (1505 pages) ,
- Command reference manual (1168 pages) ,
- Reference (934 pages)
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ISL Trunking
In this chapter
Link issues
This section describes trunking link issues that can come up and recommended actions to take to
correct the problems.
Symptom
A link that is part of an ISL trunk failed.
Probable cause and recommended action
Use the trunkDebug port1 port2 command to troubleshoot the problem, as shown in the following
procedure.
1. Connect to the switch and log in as admin.
2. Enter the trunkDebug port1 port2 command:
The trunkDebug command displays the possible reason that two ports cannot be trunked. Possible
reasons are:
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Fabric OS Troubleshooting and Diagnostics Guide
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Link issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
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Buffer credit issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
where:
port1
Specify the area number or index of port 1. Use the switchShow command to
view the area or index numbers for a port. This operand is required.
port2
Specify the area number or index of port 2. Use the switchShow command to
view the area or index numbers for a port. This operand is required.
Example of an unformed E_Port
This example shows that port 3 is not configured as an E_Port:
ecp:admin> trunkdebug 126, 127
port 126 is not E/EX port
port 127 is not E/EX port
Example of a formed E_Port
ecp:admin> trunkdebug 100, 101
port 100 and 101 connect to the switch 10:00:00:05:1e:34:02:45
The switch does not support trunking.
A trunking license is required.
Chapter
8
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