Troubleshooting Guide

Note:
When the FA Server rejects an I-SID-to-VLAN assignment request, only a generic
reason for the rejection is logged.
Enhanced troubleshooting using trace
7. Configure trace:
a. Enable keyword search in the trace output:
trace grep WORD<0-128>
b. Set the trace level for FA:
trace level <0-226> sub-system
Note:
FA uses the trace level 221.
c. Turn on trace:
trace screen [enable]|[disable]
Example:
The following example simulates a configuration error on the FA Server as a result of which the FA
Server rejects I-SID-to-VLAN assignments from the proxy device. When the FA Server rejects an I-
SID-to-VLAN assignment, the error message listed in the log file is a generic reason for the
rejection, as demonstrated in this example. To troubleshoot further, set up trace.
On the FA Server, assume that the interface MLT 1 consists of ports 1/5 and 1/6. Assume that a
proxy device sends I-SID-to-VLAN assignment mapping requests with I-SID 9005 and CVID 400, on
this interface.
Simulate a configuration error on the FA Server:
Configure a management I-SID with a C-VID value that is different from that of the C-VID in the I-
SID-to-VLAN assignment request from the proxy. So, for example, configure a management I-SID
with C-VID 999, which is different from the C-VID advertised by the proxy, which is 400. This causes
rejection of I-SID-to-VLAN assignment requests on the interface.
Switch:1>en
Switch:1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch:1(config)#interface mlt 1
Switch:1(config-mlt)#no fa enable
Switch:1(config-mlt)#fa management i-sid 9005 c-vid 999
Switch:1(config-mlt)#fa enable
Switch:1(config-mlt)#exit
Switch:1(config)#exit
At this stage, the FA Server rejects I-SID-to-VLAN assignments as shown below.
Switch:1#show fa assignment
=======================================================================
Fabric Attach Assignment Map
=======================================================================
Interface I-SID Vlan State Origin
-----------------------------------------------------------------------
Fabric Attach troubleshooting example
January 2017 Troubleshooting 335
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