[c-nsp] policy-maps on dCEF platforms

Artyom Viklenko artem at aws-net.org.ua
Thu Jun 10 01:29:57 EDT 2010


Hi, All!

I have the folowing porblem on Cisco 7600 with RSP720-3CXL-GE.
IOS 12.2(33)SRD4 Advanced IP Services

 From config:

!
policy-map xxxxxx
   class class-default
     police cir 10240000 bc 1920000 be 3840000
      conform-action transmit
      exceed-action drop
      violate-action drop
!
!
interface VlanYYY
  description Some Customer
  ip address x.x.x.x 255.255.255.252
  no ip redirects
  ip flow ingress
  no snmp trap link-status
  service-policy input xxxxxx
  service-policy output xxxxxx
end
!

Before upgrade we has only CFC-capble line cards in it
(WS-X6748-SFP, WS-X6704-10GE) and actual rate on customers
interfaces was according policy-maps.

Recently 4-port 10G card WS-X6704-10GE was replaced by
WS-X6708-10GE with DFC (WS-F6700-DFC3CXL).

Incoming traffic comes via CFC line cards and via this
10GE DFC line card. So, on customer interface we have
some time nearly doubled rate.

I have read some docs on cisco.com and found explanation
how policyng works in such situation - each DFC-capable
linecard process service policy independently on ingress.

#sh policy-map int vlan YYY
...
   Service-policy output: xxxxxx

     class-map: class-default (match-any)
       Match: any
       police :
         10240000 bps 1920000 limit 1920000 extended limit
       Earl in slot 2 :
         108929538743 bytes
         5 minute offered rate 72568 bps
         aggregate-forwarded 108895170086 bytes action: transmit
         exceeded 34368657 bytes action: drop
         aggregate-forward 65368 bps exceed 0 bps
       Earl in slot 5 :
         252903936350 bytes
         5 minute offered rate 101144 bps
         aggregate-forwarded 252600188727 bytes action: transmit
         exceeded 303747623 bytes action: drop
         aggregate-forward 56304 bps exceed 0 bps
#


I try add command mls qos bridged but it doesn't help.

So the question is: Is it possible in some way to solve such
situation and control egress rate to customers with DFC line
cards?

Still trying to find any hints in Google... without success. :(

Thanks in advance!


-- 
            Sincerely yours,
                             Artyom Viklenko.
-------------------------------------------------------
artem at aws-net.org.ua | http://www.aws-net.org.ua/~artem
artem at viklenko.net   | ================================
FreeBSD: The Power to Serve   -  http://www.freebsd.org


More information about the cisco-nsp mailing list