Sunday, October 26, 2008

Multicast Routing - Part IV Limiting Bandwith Part 2

In my previous post on rate limiting multicast traffic i made use of the ip multicast rate-limit function. If prohibited from using the function similar limiting can be achieved via MQC. As ever with the CCIE lab i think it pays to have more than one method of achieving the same goal.

ip access-list extended MCAST
permit ip 224.0.0.0 31.255.255.255

class-map MCAST
match access-group name MCAST

policy-map LIMITMCAST
class MCAST
police 8000

interface s2/0
service-policy output LIMITMCAST


R2#show policy int s2/0

Serial2/0

Service-policy output: S2/0

Class-map: LIMITMCAST (match-all)
7450 packets, 3340440 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: access-group name MCAST
police:
cir 8000 bps, bc 1500 bytes
conformed 5089 packets, 1649908 bytes; actions:
transmit
exceeded 2173 packets, 1679628 bytes; actions:
drop
conformed 0 bps, exceed 0 bps

Class-map: class-default (match-any)
991 packets, 47636 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any

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