Cisco N5K-M1600 - Expansion Module - 6 Ports Troubleshooting Manual page 97

Chapter 5 Troubleshooting SAN Switching Issues
S e n d d o c u m e n t c o m m e n t s t o n e x u s 5 k - d o c f e e d b a c k @ c i s c o . c o m .
To find the auto area-list and the persistent FCIDs, use the show flogi auto-area-list command and the
show fcdomain fcid persistent command.
Example:
show flogi auto-area-list
Fcid area allocation company id info:
<...>
00:14:5E
00:1B:32
00:50:2E
00:E0:69
00:E0:8B
show fcdomain fcid persistent {entire AREA reserved for OUI 00:E0:8B}
102
102
102
102
If there are not enough FCIDs, you can purge dynamic and unused FC IDs in the specified VSAN with
the purge fcdomain command.
Example:
switch# purge fcdomain fcid vsan <vsan-id>
The ports will soon come up.
It is also possible that HBAs are trying to login with S_ID != 0x0.
If this is the situation and there is nothing in the persistency table for the WWN of the HBA, try to assign
the S_ID used by HBA to the HBA itself.
If the S_ID is already in use or is in the wrong domain, the request is rejected by fcdomain. After a
number of retries, the port is suspended.
When HBAs get into this mode, they try to log in with every FCID in the FCID space, from 0x00.00.01
up to all the 0xDD.AA.PP numbers.
This behavior can be seen in the show flogi internal event-history msgs command output
{HBA is trying to login with different FCIDs}
Example:
841) Event:E_FLOGI_LRX, length:20, at 56079 usecs after Tue Jun 22 15:40:59 2010
WWN: 21:01:00:1b:32:af:d6:8c
886) Event:E_FLOGI_RX, length:20, at 897472 usecs after Tue Jun 22 15:40:58 2010
WWN: 21:01:00:1b:32:af:d6:8c
888) Event:E_FLOGI_FAIL, length:20, at 884758 usecs after Tue Jun 22 15:40:58 2010
WWN: 21:01:00:1b:32:af:d6:8c
rjt reason: 7 OPC: MTS_OPC_DM_GET_FCIDS(275)
903) Event:E_FLOGI_RX, length:20, at 835015 usecs after Tue Jun 22 15:40:58 2010
WWN: 21:01:00:1b:32:af:d6:8c
In this case, the solution is to manually configure an entry in the persistency table for the WWN of the
HBA as shown in the following example. An alternative is to power-cycle the device. This usually makes
the HBA start with a normal FLOGI with S_ID=0x0.
Example:
OL-25300-01
21:01:00:1b:32:2f:7f:63
21:00:00:1b:32:0f:7f:63
21:00:00:e0:8b:89:a7:07
21:00:00:e0:8b:88:e9:22
0x020003 SINGLE FCID
0x020004 SINGLE FCID
0x021c00 ENTIRE AREA
0x024300 ENTIRE AREA
VSAN: 1 ifindex: fc2/1
VSAN: 1 ifindex: fc2/1
VSAN: 1 ifindex: fc2/1
VSAN: 1 ifindex: fc2/1
Cisco Nexus 5000 Series Troubleshooting Guide
FC Services
YES DYNAMIC
YES DYNAMIC
YES DYNAMIC
YES DYNAMIC
FCID: 0x000032
FCID: 0x000030
ev_id: 21
FCID: 0x00002f
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