Subject: Re: Path MTU discovery
To: None <tech-net@NetBSD.ORG>
From: Wolfgang Rupprecht <email@example.com>
Date: 07/15/1997 12:20:47
mo@UU.NET (Mike O'Dell) writes:
> but if you put an FDDI interface into your box and have
> it talk to another server, how will your hard-wired MTU of 1460
> take advantage of half as many packets per NFS transfer??
Under NetBSD the MTU is specifiable on a per-routing table entry
basis. If I had an FDDI I'd simply allocate a network for the FDDI
and set that MTU to 4k (or whatever the exact number is). Adding the
following to the rc file, sure is faster than adding the MTU-discovery
code to the kernel.
route add -mtu 4096 -net x.x.x.0 myinterface
Wolfgang Rupprecht <firstname.lastname@example.org> http://www.wsrcc.com/