Traffic policing or shaping

Aug 01, 2005 2 Replies

Hi,



After reading the Cisco IOS QoS/CoS stuff. I think this is impossible... could someone confirm?


2 IP subnets sharing a 2Mbps leased line, when both subnets are busy, the less busy subnet will at least have 1Mb bandwidth allocated to their own subnet and the more busy subnet can use the remaining 1.5Mb bandwidth... (does this make sense?)

Many thanks in advance.



Regards,



P

Hi

It doesnt make sence the way it is written, I think what your refering to is that each subnet get's priority for the 1st Meg of traffic it is sending. But can use the others allocation if it's not being used. This depends though on how the policy-maps are configured.

Regards

Toby

Hi Toby,

That is exactly what I want to achieve... with below config (other other end configured similar way), I expect to see both subnet will have around 1Mb bandwidth each when they both busy... however, this is not the case :( Both subnets were tested and capable to go up to 2Mb alone. But when I start "busy" them, one of the subnet seems to go well over the 1Mb basically eating all the bandwidth from the other subnet... any ideas?

class-map match-any 1MB-UNDER match precedence 5 ! policy-map QoS-OUT class 1MB-UNDER bandwidth 2048 policy-map QoS-IN class class-default police 1024000 conform-action set-prec-transmit 5 exceed-action set-prec-transmit 0 ! interface Ethernet0 [snip] service-policy input QoS-IN ! interface FastEthernet0 [snip] service-policy input QoS-IN ! interface Serial0 [snip] service-policy output QoS-OUT ! Many thanks,

P

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