ā01-29-2013 01:16 AM
Hi,
We have 2 11503s in failover pair, connected to 2 switches in stack, and we don't have problems if we use css ethernet interfaces (10/100) - If we try to use the 2 gigabit interfaces (1/1 and 1/2), letting the failover in 2/1 interface (10/100), the 2 CSS don't see each other anymore and they begin to flap every 30 seconds becoming primary all two. When I disconnect the failover CSS, all returns correct. The 2 switches in stack have gigabit interfaces.
Here is the show phy command:
Configured Actual Partner Flow
Name Speed Duplex Speed Duplex Link Rev Auto Control
---- ----- ------ ----- ------ ---- --- ---- ------
Ethernet-Mgmt 10 Mb/s half 10 Mb/s half Down 3 - -
1/1 1000 Mb/s full 1000 Mb/s full Up 3 Yes Enabled
1/2 1000 Mb/s full 1000 Mb/s full Up 3 Yes Enabled
2/1 auto auto 10 Mb/s half Down 15 - -
2/2 auto auto 10 Mb/s half Down 15 - -
2/3 auto auto 10 Mb/s half Down 15 - -
2/4 auto auto 10 Mb/s half Down 15 - -
2/5 auto auto 10 Mb/s half Down 15 - -
2/6 auto auto 10 Mb/s half Down 15 - -
2/7 auto auto 10 Mb/s half Down 15 - -
2/8 auto auto 10 Mb/s half Down 15 - -
Before this, I used 2/6 and 2/8 ports without problems.
Many thanks.
Daniela
ā01-30-2013 11:06 PM
Hi Daniela,
Do you see any interface errors on CSS or switch side during the issue? If you have appropriate level set the in show log sys.log you should see message like interface down or reason for failover.
You can also check in show ether-errors if you have any errors on the aforesaid interfaces during the problem. If yes then we need to investigate what is causing those errors. Can you try different interfaces on switch side and see if the issue still persists.
Regards,
Kanwal
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