Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

frame-relay cir statement

Just want to get confermation on my understanding. Based on the config below the maximum I can get out of this configuraiton (voice or data) when applied to an interface is 128K (even though the actual port speed is 256K).

map-class frame-relay map_class_frts128

frame-relay cir 128000

frame-relay bc 1280

frame-relay be 0

frame-relay mincir 128000

service-policy output policy_map_voice_remote

frame-relay fragment 160

Am I correct?

3 REPLIES
Cisco Employee

Re: frame-relay cir statement

you are correct..

must apply map-class to interface..

Regards,

ketan

New Member

Re: frame-relay cir statement

I've got a customer with a similar config and changed the cir and mincir to a little bit less than the actual cir as the values that IOS shapes to are approx. the value configured. Some documents on CCO say to use 95% of the CIR.

Silver

Re: frame-relay cir statement

We often recommend this if the SP is very tight on the policing of the CIR - the traffic shaping engine is based on layer 3 traffic rates, so by dropping the cir etc values to 95% of the real CIR you allow the overhead the frame relay headers take up on the packet that the network switches.

111
Views
0
Helpful
3
Replies