Cisco N5K-M1600 - Expansion Module - 6 Ports Troubleshooting Manual page 93

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 .
switch# show fspf vsan 200 interface port-channel 200
FSPF interface port-channel 200 in VSAN 200
FSPF routing administrative state is active
Interface cost is 125
Timer intervals configured, Hello 20 s, Dead 80 s, Retransmit 5 s
FSPF State is INIT
Statistics counters :
Number of packets received : LSU
Number of packets transmitted : LSU
Number of times inactivity timer expired for the interface = 4
In the example:
Note
The dead timer is not set to the default (80 seconds) on the first switch. Check the neighboring
•
switch (MDS) configuration to make sure it matches.
FSPF is not in FULL state. This indicates a problem.
•
In the interface configuration mode, change the fspf dead-interval value so that the same values match
Step 4
on both switches.
switch(config)# interface san-port-channel 200
switch(config-if)# fspf dead-interval 80 vsan 200
Verify that the FSPF is in FULL state after the change. Ensure that there is a route for VSAN traffic with
Step 5
the show fspf internal route vsan <vsan-id> command.
Example:
switch# show fspf internal route vsan 200
FSPF Unicast Routes
---------------------------
VSAN Number
-----------------------------------------------
switch# show fspf vsan 200 interface san-port-channel 200
FSPF interface san-port-channel 200 in VSAN 200
FSPF routing administrative state is active
Interface cost is 125
Timer intervals configured, Hello 20 s, Dead 80 s, Retransmit 5 s
FSPF State is FULL
Neighbor Domain Id is 0x18(24)
Neighbor Interface is san-port-channel 200 (0x000400c7)
Statistics counters :
Number of packets received : LSU
Number of packets transmitted : LSU
Number of times inactivity timer expired for the interface = 0
Possible Cause
There is a region mismatch on the switch.
The following example shows possible log messages from the show logging command log:
Example:
OL-25300-01
Dest Domain Route Cost
200 0x18(24)
4 LSA 4 Hello 41
4 LSA 4 Hello 29
Next hops
125 san-port-channel 200
8 LSA 8 Hello 47
8 LSA 8 Hello 70
Cisco Nexus 5000 Series Troubleshooting Guide
FC Services
Error packets 35
Retransmitted LSU 0
Error packets 4
Retransmitted LSU 0
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