Fspf Issues In A Multi-Vsan Environment - Cisco MDS 9000 Series Troubleshooting Manual

Chapter 4 Troubleshooting Switch Fabric Level Issues
S e n d c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
View the output from this command to verify that the interface is in FSPF "active state." The system
output looks like this:
switch1# show fspf vsan 1 interface fc1/2
FSPF interface fc1/2 in VSAN 1
FSPF routing administrative state is active -----1
Interface cost is 1000
Timer intervals configured, Hello 20 s, Dead 80 s, Retransmit 5 s -----3
FSPF State is FULL -----4
Neighbor Domain Id is 1, Neighbor Interface index is 0x00010002 -----5
Statistics counters :
Number of packets received : LSU
Number of packets transmitted : LSU
Number of times inactivity timer expired for the interface = 0
This displays the number of packets; Hellos should be received every 20 seconds.
1.
2.
3.
4.
5.
Step 3 Verify that all FC routes are available by entering the following command:
switch1# show fspf internal route v 1
The system output looks like this:
switch1# show fspf internal route v 1
FSPF Unicast Routes
---------------------------
VSAN
----------------------------------------------------------------------------------------
1
1
1
This shows the total cost of all links.
The next hop to (238) has two interfaces. This indicates that both paths will be used during load sharing.
Up to sixteen paths can be used by FSPF with a Cisco MDS 9000 Family switch.

FSPF Issues in a Multi-VSAN Environment

With the implementation of VSANs used with Cisco MDS 9000 Family switches, a separate instance of
FSPF runs within each VSAN, and each instance is independent of the others. For this reason, FSPF
issues affecting one VSAN have no effect on FSPF running in other VSANs.
OL-5183-02, Cisco MDS SAN-OS Release 1.3
-----2
Indicates that FSPF is active and is not disabled on this interface.
Indicates the cost of the path out this interface.
Identifies the configured FSPF timers for this interface, which must match on both sides.
Indicates Full State or Adjacent. Sent and received all database exchanges and required Acks. Port
is now ready to route frames.
Provides FSPF neighbor information.
Number Dest Domain
0x01(1)
0xEF(239)
0xED(238)
46 LSA 24 Hello 103
24 LSA 45 Hello 104
Route Cost
1000
1000
2000
fc1/2
Cisco MDS 9000 Family Troubleshooting Guide
Troubleshooting FSPF Issues
Error packets 0
Retransmitted LSU 0
Next hops
fc1/2
fc1/1
fc1/1
fc1/2
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