One reason might be a move to voice over IP. While I am not really up to
speed on this yet, I recently attended Cisco sponsored AVVID training, and
this was a point that was made. On the internal network, having a smaller
MTU helps greatly on the voice over side. Voice packets suffer less delay
when data packets are smaller rather than larger. Voice packs don't have to
wait around for large data packets to go through. Less delay = better voice
quality.
I asked specifically about the issues on the data side, and the instructor
did point out that ATM, with a packet size of 53 bytes, was highly efficient
and did not cause data services to denigrate.
I suppose there is the additional overhead of fragmenting and reassembling
large packets. And a major issue if the DF bit is set. One more reason never
to set the DF bit, I suppose.
Chuck
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Robert John Lake
Sent: Monday, June 05, 2000 9:58 AM
To: Clark, Jason
Cc: '[EMAIL PROTECTED]'
Subject: Re: setting mtu size on a 2611
Hi,
Why do you want to change the MTU size.... You are going to walk into
serious issues if you do.
Robert
"Clark, Jason" wrote:
>
> Good Morning
>
> I am trying to manually set the MTU size on a 2611 and am receiving the
> following message % Interface Ethernet0/0 does not support user settable
> mtu." Is it not possible to manually set the MTU size on Ethernet
> interfaces?
>
> TIA
>
> Jason
>
> ___________________________________
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