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VLAN traffic shaping on Cat6500/SUP720

vivashchenko
Level 1
Level 1

Is there a way to make hierarchical traffic shaping work on VLAN interface on Cat6500 with SUP720? I understand that traffic shaping is not supported by PFC, so we issued "no mls switching" command and from "show policy-map interface" I see that packets are passing through. However, it seems that no shaping is done, as the policy is passing 2 mbps of traffic even though I have set "shape average 512000" on it.

class-map match-all Any_traffic

match any

!

policy-map Test

class Any_traffic

shape average 512000 2048 2048

!

interface Vlan809

service-policy output Test

sw-bbone1.lim#sh policy-map interface

Vlan809

Service-policy output: Test

Class-map: Any_traffic (match-all)

157886 packets, 129493500 bytes

5 minute offered rate 1800000 bps, drop rate 0 bps

Match: any

queue size 0, queue limit 128

packets output 0, packet drops 0

tail/random drops 0, no buffer drops 0, other drops 0

shape (average) cir 512000 bc 2048 be 2048

target shape rate 512000

Class-map: class-default (match-any)

0 packets, 0 bytes

5 minute offered rate 0 bps, drop rate 0 bps

Match: any

3 Replies 3

Prashanth Krishnappa
Cisco Employee
Cisco Employee

Shaping is not supported on VLAN interfaces. Configure a policer instead

http://www.cisco.com/warp/public/473/102.html#ios

I'm afraid policing is not an option. :(

We need to shape the traffic and then do LLQ inside.

Is there any way to force traffic to be shaped in software by MSFC?

No. It cannot be. LLQ is only supported on WAN interfaces. For ethernet/VLAN interfaces, you will need to use PFC based QoS.

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