[c-nsp] EOBC0/0 ifInErrors

[Eugene Grosbein]

02.10.2020 12:24, Eugene Grosbein wrote:

>> 01.10.2020 17:49, Nick Hilliard wrote:
>>
>>> You have dual supervisor on this box.
>>> Can you do a failover to the secondary and see if that stops the input errors?
>>> This will localise the problem
>>
>> Do I need to disable NSF (non-stop forwarding) to localise the problem?
>> I guess both RSP should exchange data routinely when NSF is enabled.
> 
> Or I could just eject stand-by RSP out of the chassis.

So I've changed redundancy mode to to RPR (Route Processor Redundancy, was SSO) then stand-by RSP was ejected physically.
I expected that errors would stop or would not change at all but neither happened.

Instead, error rate decreased significantly but not ceased (12:25 was the moment):
http://www.grosbein.net/cisco/eobc0_0-day.png

Also something strange happened with these stats that I consider as "fabric utilisation":

CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.1.0 = INTEGER: 25
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.1.1 = INTEGER: 37
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.2.0 = INTEGER: 6
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.2.1 = INTEGER: 5
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.3.0 = INTEGER: 8
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.3.1 = INTEGER: 1
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.4.0 = INTEGER: 4
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.4.1 = INTEGER: 4
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.5.0 = INTEGER: 0
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsInUtil.6.0 = INTEGER: 0
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.1.0 = INTEGER: 7
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.1.1 = INTEGER: 12
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.2.0 = INTEGER: 13
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.2.1 = INTEGER: 18
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.3.0 = INTEGER: 13
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.3.1 = INTEGER: 13
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.4.0 = INTEGER: 7
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.4.1 = INTEGER: 11
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.5.0 = INTEGER: 0
CISCO-CAT6K-CROSSBAR-MIB::cc6kxbarStatisticsOutUtil.6.0 = INTEGER: 0

Here are corresponding graphs. Modules 5 and 6 (RSPs) almost always show zeroes,
graphs for modules 1 and 4 do not show any unusual but graph for modules 2 and 3 do:

http://www.grosbein.net/cisco/f10-day.png
http://www.grosbein.net/cisco/f11-day.png
http://www.grosbein.net/cisco/f20-day.png
http://www.grosbein.net/cisco/f21-day.png
http://www.grosbein.net/cisco/f30-day.png
http://www.grosbein.net/cisco/f31-day.png
http://www.grosbein.net/cisco/f40-day.png
http://www.grosbein.net/cisco/f41-day.png

I get RSP and configuration back and graphs restore to previous shapes.