[47210] in North American Network Operators' Group

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cRTP on WAN routers

daemon@ATHENA.MIT.EDU (Heath_Dieckert@Dell.com)
Mon Apr 29 13:53:42 2002

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From: Heath_Dieckert@Dell.com
To: nanog@merit.edu
Date: Mon, 29 Apr 2002 12:53:04 -0500
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Is anybody aware of a vendor that can supply a layer three device with the
capability to pass 2000 or more simultaneous cRTP flows over ATM DS3 without
running out of CPU?  Each flow is 12Kbit/sec (with RTP header compression).
Specifically I am talking about G729a traffic with a 30ms payload.  Cisco's
7200 VXR NPE400 seems to be falling far short of our requirements and the
larger chassis such as the 6500 doesn't support cRTP over ATM.  I haven't
tried the 7200 NSE-1 yet for this application because we have had tons of
issues with those in an earlier unrelated deployment.

Feel free to respond offline if necessary.

Heath

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