Zero CIR Frame Relay Voice

[vrana]

I have a remote site with Frame with a 1.5 mb circuit no/zero CIR from Sprint. The Hub site has a 12 mb FR Circuit.

Remote Site Traffic Shaping is as follows:

map-class frame-relay Data-Voip

frame-relay cir 1536000

frame-relay bc 15360

frame-relay be 0

frame-relay mincir 1536000

frame-relay fragment 1600 --- Dual FIFO

service-policy output Voip

Service Policy is set to priority 50% for Voice EF traffic bandwidth 64k for voice control.

sho frame-relay pvc output shows shaping inactive and sho traffic-shape stat output shows all sub interfaces except the site which has voice and traffic shaping applied.

What should the min cir value as above "frame-relay mincir 1536000" be set to zero, based on provider info all traffic is marked DE.

Has anyone else exp. high jitter with voice with zero cir FR circuits.

Thx

[didyap]

I hope this link will help you in configuring Framerelay

http://cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide09186a0080087b91.html

[sundar.palaniappan]

Your mincir value should be set to 0.

Also, lower the fragment size substantially avoid serialization delay on the link.

HTH

Sundar

[dgahm]

You are not going to be happy running voice over a 0 CIR circuit unless your provider is setting it up to do so.

http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a00800d6788.shtml

Some providers sell a Frame Relay service of 0 CIR. Obviously, not exceeding CIR in this case would prevent any voice from being sent across the frame link. A service of 0 CIR may be used for voice but there needs to be a Service Level Agreement (SLA) with the provider to guarantee minimal delay and jitter for a certain bandwidth across the 0 CIR PVC

Please rate helpful posts.

Dave