how to create policy map that control bw traffic for specifi subnet ?

[Dr.X]

hi ,

i have the sumbet x.x.x.x/27 ,

i  have a router that connect with interent , and want to give a group of ips a specific cir , and this cir be shared betweeen these ips ,

how to use policy map , and how to apply it ??

regards

[smehrnia · Accepted solution]

Hi,

first you have to select your subnets with an access-list:

access-list 20 permit [subnet / wildcard]

then you have to map the access-list to a class:

class-map CIR

match access-group 20

now create the policy-map:

policy-map RATE_LIMIT

class CIR

  bandwidth [rate]

  police [the rate limit] exceed-action [drop]

and then bind to the output of the interface towards internet:

int f0/0

service-policy out RATE_LIMIT

Hope it Helps and plz Rate helpful posts.

Soroush.

[Dr.X]

another question ,

how to make priority for this subnet to be always have the abndwidth 20  mega?

i mean that  my internet bw = 40 mega ,

and i have more  subnets that the above subnet ,

but i want   to reserve the bw to this subnet to be dedicated whatever there were congestion or not ??

with my best regards

[smehrnia]

I just editted my original post, added a BANDWIDTH command under service-policy. you dont use Priority command for this application, you use bandwidth to guarantee a minimum bw.

Soroush.

[Dr.X]

hi , im really thankful for u, but another question ,

in the access list i  did an extended  acl and matched the  my subnet as source and the destination i put it any ,

now the interface i applied it  out , .

is that ok ??

============

another question , i want to ask about those two command:

1-Average Rate Traffic Shaping

2-      cir 2000000 (bps)

do i need them to  achive my goal ??

with my best regards

[smehrnia · Accepted solution]

using an extended access-list with that description, is similar to one i wrote for you, it is fine. but, you have to use that ACL in the service policy, just like what i did. i didnt exactly understand what u meant by applying it, just to let you know, in this application acl is to define traffic to be used in the service policy only.

i dont think you need them in that service policy, bandwidth and police commands with correct setting would do just fine.

Hope it Helps,

Soroush.

[Dr.X]

u r right ,

i do it

thanks for ur help ad really apppreciating ur precious reply .

regards