[c-nsp] NPE-400 vs. NSE-1 for ATM-DSL aggregation

[Charles Hardin]

Hello Jay,

We have both Cisco and Redback in our Network terminating several thousands 
of users currently. Both are good boxes! However, the Cisco works best for 
us when the configuration is tailored specifically to B-RAS functionality. 
If you want to stick with Cisco, I would recommend going with the NPE-G1 
platform with a full gig of memory. This platform is running well in our 
Network currently and terminating upwards of 6500 to 7000 PPPoE sessions 
while running at around 30 - 35% CPU in one of our POPs. The specs list 16k 
as max session capacity but I don't know if it will ever make that mark 
before CPU bites us. We're also running several NPE-400's with 512mb ram in 
some of our smaller remote POPs quite successfully and terminating around 
1500 to 2000 sessions. CPU is running around 10% on these boxes. The max 
session limit on these boxes are listed at 8k sessions.

Question, what is causing the high CPU creep? We specifically had to work 
through some configuration issues with how OSPF was setup on our Cisco 
B-RAS in order to get our CPU under control and down to acceptable 
operating levels.

Good Luck,
Charles

At 12:04 PM 9/16/2004, Jay Hennigan wrote:
>We're running a 7206VXR with NPE-300 for DSL aggregation on an ATM DS-3
>and are seeing CPU creeping up.  I'm considering the NPE-400 or the NSE-1
>as a replacement.  The NSE-1 is end-of-sale but the literature implies
>that it it tailored for this type of service.  On the other hand, the
>NPE-400 is still current manufacture, has a faster processor, and takes
>more RAM, and the PXF code may not be well supported by future IOS.
>
>Any suggestions on which would be the better replacement engine in this
>scenario?  Yes, I know about the 1G, but OSI layer 8 (the financial layer)
>is having compatibility issues with that solution.
>
>--
>Jay Hennigan - CCIE #7880 - Network Administration - jay at west.net
>WestNet:  Connecting you to the planet.  805 884-6323      WB6RDV
>NetLojix Communications, Inc.  -  http://www.netlojix.com/
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