[15019] in North American Network Operators' Group
Re: MTU of the Internet?
daemon@ATHENA.MIT.EDU (Paul J. Zawada)
Thu Feb 5 11:45:16 1998
Date: Thu, 05 Feb 1998 10:27:03 -0600
To: nanog@merit.edu
From: "Paul J. Zawada" <zawada@ncsa.uiuc.edu>
In-Reply-To: <823ehywhtw.fsf@chimp.juniper.net>
At 12:56 AM 2/5/98 -0800, Tony Li wrote:
>jra@scfn.thpl.lib.fl.us (Jay R. Ashworth) writes:
>
>> > Unless your ISP uses BBN Butterflies and C30 IMPs in its backbone, I
>> > would discount the odds of running into a link with an MTU of 576.
>>
>> How do I program my router to emulate one of those?
>
>You don't need to. It's already there. You just need to configure it:
>
> conf term
> int serial 0
> ip mtu 576
> no ip route-cache
> <repeat for all interfaces>
> no router bgp 109
> router egp 109
> ...
> ^Z
To truly emulate the Butterfly's performance, wouldn't you have to do a
hardware mod and put a divide-by-64 on the clock?
;-)
--zawada
Paul J. Zawada, RCDD | Senior Network Engineer
zawada@ncsa.uiuc.edu | National Center for Supercomputing Applications
+1 630 686 7825 | http://www.ncsa.uiuc.edu/People/zawada
