From: Faryar Zabihi \(fzabihi\) (fzabihi@cisco.com)
Date: Thu Apr 13 2006 - 23:22:12 GMT-3
Even if you set the MTU size it can still be resized down if there's a
segment in the communications path that cannot handle the larger size...
There's a negotiation & notification process in the communication stream
that helps with that.
Faryar
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
supernet
Sent: Wednesday, April 12, 2006 10:43 PM
To: cisco@groupstudy.com; 'Cisco certification'
Subject: Cisco VPN client MTU problem
We are comparing Cisco Concentrator and Juniper Neoteris performance and
noticed that IVE is faster when downloading a same file from a same
server.
Using sniffer I can see Cisco VPN client set packet size to 536 bytes
while Juniper Neoteris set to 1148 bytes. I tried to use VPN client MTU
tool to set MTU to 1492 or 1300 or 1148 bytes, but sniffer still shows
536 bytes. I tried to use DrTCP, still no luck. My question is why I
can't change the packet size? I tried different version of Cisco VPN
client, same result. Any idea? Thanks. Yoshi
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