They, (we) don't recommend changing the mtu, we DO recommend Configure Multilink
PPP with Interleaving /FRF.12 fragmentation setup rules for Voice over IP
connections over Frame Relay.
-Eric
Chuck Larrieu wrote:
> 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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