Cisco N5K-M1600 - Expansion Module - 6 Ports Troubleshooting Manual page 98

FC Services
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 .
switch# conf t
switch(config)# fcdomain fcid database
switch(config-fcid-db)# vsan <vsan-id> wwn 50:05:08:b2:00:71:c8:c2 fcid 0x6fee00 area
If the problem continues to persist, use the following commands to collect information to aid further
analysis.
Show tech-support flogi
Show tech-support fcdomain
Show logging log
show port internal info interface fc <slot/port>
show port internal event-history interface fc <slot/port>
show tech-support detail > bootflash:showtechdet
Capture debug flogi and debug fcdomain via following below steps:
switch# debug logfile flogi_fcdomain
switch# debug flogi all
switch# debug fcdomain all
switch(config)# int fc <slot/port>
switch(config-if)# shut
switch(config-if)# no shut
switch(config-if)# undebug all
switch# dir log:
switch# copy log:flogi_fcdomain ftp://x.y.z.w {or use tftp/scp/sftp}
Having stale FCNS entries for Fibre Channel nodes
The Fibre Channel nodes are able to be logged (FLOGI) in to the SAN fabric, but the FCNS entries for
those nodes are incomplete. Serves cannot reach their targets.
As a result, fc4-types:fc4_features will be empty in FCNS database.
Possible Cause
The Fibre Channel nodes may not be registering their FC4 types and FC4 features in the FCNS database
in a topology where Nexus 5000 Series switches are configured as NPV core (feature NPIV) and
connected to legacy gateway switches. The fc4-types:fc4_features can be verified by the show fcns
database detail command as shown in the following example:
Example:
switch# show fcns da fcid 0x621400 detail vsan 2
------------------------
VSAN:2
------------------------
port-wwn (vendor)
node-wwn
class
node-ip-addr
ipa
fc4-types:fc4_features
symbolic-port-name
symbolic-node-name
port-type
port-ip-addr
fabric-port-wwn
Cisco Nexus 5000 Series Troubleshooting Guide
5-26
{check if you have the file in log: directory}
31 Aug 03 13:45:13 2010
55941 Aug 05 07:21:15 2010
FCID:0x621400
:21:01:00:1b:32:a3:d7:2c
:20:01:00:1b:32:a3:d7:2c
:3
:0.0.0.0
:ff ff ff ff ff ff ff ff
:
:
:
:N
:0.0.0.0
:20:d9:00:0d:ec:e0:0e:80
dmesg
flogi_fcdomain
[z7095ib-1_T]
Chapter 5 Troubleshooting SAN Switching Issues
OL-25300-01