[cisco-nas] high cpu load on LNS

[Dennis Peng]

Tassos Chatzithomaoglou [achatz at forthnet.gr] wrote:
> After reading "High CPU Utilization on Cisco Routers Used as L2TP 
> Termination Points"
> http://www.cisco.com/warp/customer/794/l2tp_highcpu.html on CCO, i still 
> have one question:

Please ignore this doc. Read this one instead:

http://www.cisco.com/en/US/tech/tk801/tk703/technologies_tech_note09186a0080094c4f.shtml

> If i lower the MTU of the LACs (as the document says), will it affect 
> normal users (no vpdn ones) too? If yes, in what way?

Changing the MTU on the vtemplate will modify the MRU the LAC
advertises to the LAC. However, most clients will completely ignore
the MRU that is negotiated. For the ones that do (WinXP is one such
client), it will decrease the MTU of the client to match the MRU of
the LAC.

Dennis

> 
> -- 
> ***********************************
>    Chatzithomaoglou Anastasios
> Network Design & Operations Center
>           FORTHnet S.A.
>       <achatz at forthnet.gr>
> ***********************************
> 
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> cisco-nas at puck.nether.net
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-- 
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      ||        ||                                 Dennis Peng
      ||        ||        Cisco Systems, Inc.      Escalation Engineer
     ||||      ||||       170 West Tasman Drive    Phone: (408) 526-6143
 ..:||||||:..:||||||:..   San Jose, CA 95134       Fax:   (408) 232-2343
   Cisco Systems Inc.                              dpeng at cisco.com
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