From: Balogh, Jim (jim.balogh@gwl.com)
Date: Wed Dec 14 2005 - 20:31:21 GMT-3
Two questions concerning fragmentation, interleaving and voice packets.
I have been reading about the various forms of fragmentation (MLPPP and
FRF.12) and understand that I do not want to fragment voice traffic.
Here is the link I have been reading:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cg/hw
an_c/ch05/hfrfrint.htm
From the DocCD: "To maintain low latency and low jitter for
high-priority traffic, the configured fragment size must be greater than
the largest high-priority frames. This configuration will prevent
high-priority traffic from being fragmented and queued behind
lower-priority fragmented frames."
So my first question....is there a standard packet size for voice? Or is
there a minimum fragment size that we can specify that will be larger
than voice packets?
Next question concerns this statement from the DocCD: "Note that traffic
from the priority queue will not be interleaved with fragments from the
class-default queue because shaping is configured."
If I configure shaping on my parent policy-map (to ensure I don't
overdrive a slower-speed remote connection) does this mean I will not
get interleaving? If this is the case, then what value is there in
fragmenting large packets if I can't interleave voice packets?
TIA
Jim
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