Running a VoIP application over a frame-relay network with 256k CIR and 512k BIR. From the LLQ docs I reviewed, to guarantee good voice quality, traffic shaping all frame traffic to CIR is recommended along with LLQ of voice packets.
Would like to take advantage of BIR bandwidth and still guarantee voice packets are not dropped by the frame relay switch network when congestion occurs. Here are my thoughts: What if the router were to pre-mark all data packets as "Discard Eligible" (DE) on the outbound serial interface connected to the frame network. Voice packets would NOT be marked DE. Then run up to BIR rates with LLQ prioritization for voice. Would the carrier frame network switches drop only the pre-marked DE data packets (by the router) when congestion occurred and NOT drop any voice packets? I haven't found any Cisco links that addressed QOS in this fashion. Any links on this topic would be greatly appreciated. The objective is to squeeze more bandwidth (BIR vs CIR) out of your frame relay network without dropping any voice packets. Why would this not work and what are the caveats? regards, dj Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=55814&t=55814 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
