North American Network Operators Group

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Re: MTU of the Internet?

  • From: Tony Li
  • Date: Thu Feb 05 04:17:20 1998

[email protected] (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

To simulate an IMP, you need to configure X.25 DCE interfaces.  This is too
gross to discuss on a family mailing list.