Examining interface stats on StackWise ports

[stuartkendrick]

Is there a way to view counters on Catalyst StackWise ports?  I'm using Catalyst 2960X.

I can see them via SNMP ... but the counters aren't incrementing, which suggests either a code defect or an unsupported feature.

IF-MIB::ifDescr.5179 = STRING: StackPort1
IF-MIB::ifDescr.5180 = STRING: StackSub-St1-1
IF-MIB::ifDescr.5181 = STRING: StackSub-St1-2
IF-MIB::ifDescr.5182 = STRING: StackPort2

[...]

IF-MIB::ifOperStatus.5179 = INTEGER: up(1)
IF-MIB::ifOperStatus.5180 = INTEGER: up(1)
IF-MIB::ifOperStatus.5181 = INTEGER: up(1)
IF-MIB::ifOperStatus.5182 = INTEGER: up(1)

[...]

IF-MIB::ifInOctets.5179 = Counter32: 0
IF-MIB::ifInOctets.5182 = Counter32: 0
IF-MIB::ifInOctets.5185 = Counter32: 0

[...]

IF-MIB::ifInDiscards.5182 = Counter32: 0
IF-MIB::ifInDiscards.5185 = Counter32: 0
IF-MIB::ifInDiscards.5188 = Counter32: 0

[...]

IF-MIB::ifOutOctets.5179 = Counter32: 0
IF-MIB::ifOutOctets.5182 = Counter32: 0
IF-MIB::ifOutOctets.5185 = Counter32: 0

As for the CLI, poking through the options for "show switch" and "show interface" ... I don't see an option which displays StackPort counters.

I want several things from these:

- Trend utilization between Switches, looking for over-subscription

- Trend ifIn/OutDiscards, looking for over-subscription

- Trend ifIn/OutMcast, looking for the source of a multicast flood

--sk

[Francesco Molino]

Hi

To troubleshoot stack, you have all commands under show switch or  show platform stack (stack-manager)  based on the switch model.

Except that, there are some debugs you can run to get some error message.

Here also a link for Cisco 2960x: 

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/stack_manager/command_reference/b_stck_152ex_2960-x_cr/b_stck_152ex_2960-x_cr_chapter_01.html

Let me know if you need more help.

Thanks

PS: Please don't forget to rate and mark as correct answer if this answered your question

[stuartkendrick]

OK, I'm poking through 'show switch' and 'show platform stack' commands ... I don't see any which display interface counters ... am I missing something?

--sk

[Francesco Molino]

Hi

Did you tried:

show platform stack manager counter

Or show controllers utilization?

If you're sure you've an issue you can also run debug commands to see where the issue is coming from. 

There was a command on catalyst 3750 "show switch stack-ring activity detail" but not sure if it's working on 2960. I don't have any right now to verify. 

Thanks

PS: Please don't forget to rate and mark as correct answer if this answered your question

[stuartkendrick]

OK, I'm making progress

show controllers ethernet-controller port-asic stack port {1|2}

or

remote command all show controllers ethernet-controller stack port 1

remote command all show controllers ethernet-controller stack port 2

So this gets me some of what I'm wanting, notably unicast / multicast / broadcast counters:

5n-esx# remote command 3 show controllers ethernet-controller stack port 2

Switch : 3 :
------------


     Transmit StackPort2                      Receive
 163374431808 Bytes                     303521737742 Bytes                    
   1067992989 Unicast frames              3449919886 Unicast frames           
    192952108 Multicast frames             384326026 Multicast frames         
     76417517 Broadcast frames             152330025 Broadcast frames         
            0 Too old frames            702771728102 Unicast bytes            
            0 Deferred frames            41960765408 Multicast bytes          
            0 MTU exceeded frames        17193686581 Broadcast bytes          
            0 1 collision frames                   0 Alignment errors         
            0 2 collision frames                   0 FCS errors               
            0 3 collision frames                   0 Oversize frames          
            0 4 collision frames                   0 Undersize frames         
            0 5 collision frames                  14 Collision fragments      
            0 6 collision frames       
            0 7 collision frames               81190 Minimum size frames      
            0 8 collision frames          2953970868 65 to 127 byte frames    
            0 9 collision frames           898375269 128 to 255 byte frames   
            0 10 collision frames         1460666186 256 to 511 byte frames   
            0 11 collision frames          388845942 512 to 1023 byte frames  
            0 12 collision frames          179184409 1024 to 1518 byte frames
            0 13 collision frames                  0 Overrun frames           
            0 14 collision frames                  0 Pause frames             
            0 15 collision frames      
            0 Excessive collisions                67 Symbol error frames      
            0 Late collisions                      4 Invalid frames, too large
            0 VLAN discard frames         2400419420 Valid frames, too large  
            0 Excess defer frames                 26 Invalid frames, too small
          276 64 byte frames                       0 Valid frames, too small  
   2884529360 127 byte frames          
    890937922 255 byte frames                      0 Too old frames           
    798277524 511 byte frames                      0 Valid oversize frames    
    150131575 1023 byte frames                     0 System FCS error frames  
    162411494 1518 byte frames                     0 RxPortFifoFull drop frame
    746041759 Too large frames         
            0 Good (1 coll) frames     
            0 Good (>1 coll) frames    

Interestingly, I don't see discards as a counter ... which suggests to me ... that the forwarding design is such that discard is done on ingress and that the intra-Stack links are guaranteed to be drop-free.

Poking through the output of an 'snmpwalk' ... I still see '0' for all the counters on these ports.  This suggests to me that SNMP agent does not have access to the 'ethernet-controller' ports.

Bummer.

What is the process for filing a Request For Enhancement?  Do I go through my Cisco sales team?

--sk

[Mark Malone]

I go through the my account manager in Cisco , actually trying to add MPP to ios-xe in next release right now , its there but not working fully in syntax not supported yet

sh switch stack-ring  activity detail
sh switch stack-ports summary