SNMP OID for IPv6 traffic

[Chris Welti]

Am 7/18/12 11:15 AM, schrieb Gert Doering:
> Hi 
> 
> On Wed, Jul 18, 2012 at 12:10:48PM +0300, Liviu Pislaru wrote:
>> I don't know if this is the right place to ask this but i'll give it a try:
>> Does anyone knows if there is any SNMP OID for IPv6 traffic on CISCO 
>> 7600. I've deeply searched for this information, i've tried different  
>> version on IOS (SRCx, SRDx) but without any luck. It seems like there is 
>> no counter on CISCO 7600 for inbound v6 traffic (forwarded traffic not 
>> control-plane).
> 
> The sup720 hardware has no counters for hw-forwarded IPv6 traffic.
> 
> You can see some numbers with "show interface accounting", but that's
> actually lying to you - the "IPv6" packets are "control plane or
> cpu-forwarded", and IPv6 packets forwarded by hardware add up to the
> "IP" counters.
> 
> (I've opened a TAC case on this, and all I got was "update documentation")
> 
> Supposedly the Sup2T can do better.

The Sup2T has 8 hardware counters per interface:
IPv4 in
IPv4 out
IPv4 + IPv6 multicast in
IPv4 + IPv6 multicast out
IPv6 in
IPv6 out
MPLS in
MPLS out

Example from one of our routers with "show interface details":

  Additional Counters:
  IPv4 in Switched: ucast: 232026083769 pkt, 148847946714671 bytes
  IPv6 in Switched: ucast: 9050302605 pkt, 9415087298170 bytes
  IPv4 + IPv6 in Switched: mcast: 0 pkt, 0 bytes
  MPLS in Switched: 0 pkt, 0 bytes
  IPv4 out Switched: ucast: 405745004714 pkt, 436152461768595 bytes
  IPv6 out Switched: ucast: 6604380583 pkt, 3274803027618 bytes
  IPv4 + IPv6 out Switched: mcast: 0 pkt, 0 bytes
  MPLS out Switched: 0 pkt, 0 bytes
     241476439140 packets input, 158295295704756 bytes, 0 no buffer
     Received 310796695 broadcasts (2 IP multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     412421724492 packets output, 439439372700949 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 PAUSE output
     0 output buffer failures, 0 output buffers swapped out

I don't know if they're available via SNMP though.

Regards,
Chris

SWITCH
Serving Swiss Universities
--------------------------
Chris Welti, Network Engineer
Werdstrasse 2, P.O. Box, 8021 Zurich, Switzerland
phone +41 44 268 15 30, fax +41 44 268 15 68
chris.welti at switch.ch
http://www.switch.ch