Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 alpha 4/15/85; site ucbvax.ARPA Path: utzoo!watmath!clyde!burl!ulysses!cbosgd!ucbvax!tcp-ip From: tcp-ip@ucbvax.ARPA Newsgroups: fa.tcp-ip Subject: Re: ARPANET/MILNET performance statistics Message-ID: <7765@ucbvax.ARPA> Date: Tue, 4-Jun-85 03:21:00 EDT Article-I.D.: ucbvax.7765 Posted: Tue Jun 4 03:21:00 1985 Date-Received: Thu, 6-Jun-85 01:43:24 EDT Sender: daemon@ucbvax.ARPA Organization: University of California at Berkeley Lines: 16 From: Ron Natalie One observation: MILISI is the gateway that EGP tells my gateways to use for all the nets on the other side of the bridges. Assuming this is true for both sides of the house, it would seem that this is the gateway used for peoples little ethernets to talk through to get to the otherside. Most local nets have higher MTU's than the IMP 1008 (typically 1536). This results in their gateways sending lots of fragmented datagrams all over the place. Since most of the LANs derive choose the MIL/ARPA bridge from the EGP information, ISI may bear the brunt of the fractured ethernet traffic. IP fragmentation is admittedly a bad thing to do on a regular basis. BRL avoids this by keeping most of our LAN's at 1008 (for historical reasons mostly, the gateways originally didn't know how to fragment). -Ron