We have a 6500 where random interfaces are reporting up and down. See example output below;
Oct 2916:48:45: %LINK-3-UPDOWN: Interface GigabitEthernet1/8/21, changed state to down
Oct 29 16:48:46: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/8/21, changed state to down
Oct 29 16:48:45: %LINK-SW1_SP-3-UPDOWN: Interface GigabitEthernet1/8/21, changed state to down
Oct 29 16:48:46: %LINEPROTO-SW1_SP-5-UPDOWN: Line protocol on Interface GigabitEthernet1/8/21, changed state to down
Oct 29 16:48:52: %LINK-3-UPDOWN: Interface GigabitEthernet1/8/21, changed state to up
Oct 29 16:48:52: %LINK-SW1_SP-3-UPDOWN: Interface GigabitEthernet1/8/21, changed state to up
Oct 29 16:48:52: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/8/21, changed state to up
This is happening to several different interfaces on different blades/modules.
The module is reporting as passing diagnostics. See below;
Mod Online Diag Status
---- -------------------
1 Pass
2 Pass
4 Pass
5 Pass
7 Pass
8 Pass
We have run non-intrusive diagnostics with the following command and have had no errors reported;
#diagnostic start switch 1 module 2 test non-disruptive port all
We have powered down and hard reset (physically re-seat) one of the modules with the following commands;
(config)#no power enable switch 1 module 2
hard reset (physically re-seat) of module
(config)#power enable switch 1 module 2
The reset (physically re-seat) of the module appears to have solved the issue of the interface going up and down on the module that was hard reset (physically re-seated) .
Can anybody advise if this should be correct that a hard reset (physically re-seat) one of the modules should solve an issue of interfaces randomly going up and down.
Can anybody advise if we now need to hard reset (physically re-seat) the remaining modules OR is there another way to reset the modules OR is there another way of rectifying the issue of the interfaces randomly going up and down.
