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Path: utzoo!utgpu!water!watmath!clyde!rutgers!sri-spam!ames!sdcsvax!ucbvax!CS.UCL.AC.UK!jon
From: jon@CS.UCL.AC.UK.UUCP
Newsgroups: comp.protocols.tcp-ip
Subject: IP fragments and subnets
Message-ID: <8705281448.AA15600@ucbvax.Berkeley.EDU>
Date: Thu, 28-May-87 10:49:31 EDT
Article-I.D.: ucbvax.8705281448.AA15600
Posted: Thu May 28 10:49:31 1987
Date-Received: Sat, 30-May-87 01:15:10 EDT
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three questions

1. We've subnetted the UCL net a lot recently using cisco routers.
does 4.3 adjust its mtu down when crossing a subnet router
as well as when crossing a gateway?

2. has anyone had trouble with pyramids tcp going through
routers?

 we observe tcp hangups and connection failures when
attempting ftp/rcp bulk transfers from a Sun 3 to a pyramid
98x. Packet loss in cisco is about 1/3 of every large packet

(sun sending 2-3 1000 byte packets bakc to back, pyramid
advertising 8K window).

3. Has anyone got a distributed tool for invalidating the arp
caches on a pile of 4.2 systems (for when we move a proxy arp
router)?

jon