Re: MTU of the Internet?
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 simulate an IMP, you need to configure X.25 DCE interfaces. This is too gross to discuss on a family mailing list. ;-) Tony
| >To simulate an IMP, you need to configure X.25 DCE interfaces. This is too | >gross to discuss on a family mailing list. | | Have you forgotten how to spell 1822? -s Fortunately, that little bit of hardware is no longer in production, or supported. ;-) Tony
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
participants (3)
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Paul J. Zawada -
Stephen Wolff -
Tony Li