From: Faryar Zabihi \(fzabihi\) (fzabihi@cisco.com)
Date: Fri Apr 14 2006 - 01:51:31 GMT-3
To add on to my incomplete answer...If the Neoteris works with larger
MTU size the cisco concentrator should do the same. So my previous
point might not be valid in your case...You need to open a TAC case(if u
have access to them) and get a sniffer trace to see if there is a
negotiation down on the MTU size... Maybe Juniper isn't doing it? Hard
to say.
Faryar
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Faryar Zabihi (fzabihi)
Sent: Thursday, April 13, 2006 7:22 PM
To: supernet; cisco@groupstudy.com; Cisco certification
Subject: RE: Cisco VPN client MTU problem
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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