Subject: Re: problems with outgoing packets, no mbufs
To: None <email@example.com>
From: Michael C. Richardson <firstname.lastname@example.org>
Date: 09/29/1998 21:30:04
-----BEGIN PGP SIGNED MESSAGE-----
Today my desktop became totally unusable. Couldn't get NFS, etc..
I had sent out a request for a new kernel for my desktop assuming
that this was still the problem. Perry told me that libc was fixed, so
I rebooted into win95 (ick) and got out SSH for Win95 and tried to login
to my file server to start rebuilding libc.
Hmm... I thinks: sure is slow.
Then I think: you know, my file server *has* been much slower this week
even when connecting from various customer sites. (The last two months
has seen me at my home office rarely)
So, I decided to disconnect the a 486 Ipsec box and a Sun3/60 Ipsec
test box from my network. Then I decided that I'd give my ep0 in file
server a try again, and disconnect the de0. WOW! Speed again.
Conclusion? I should have run netstat -in. Massive number of collisions.
Second conclusion? 1.3H is better at detecting bogus packets from the
network devices, rather than passing bogus packets up to TCP for the header
checksum to fail.
:!mcr!: | Network and security consulting/contract programming
Michael Richardson | Firewalls, TCP/IP and Unix administration
ON HUMILITY: To err is human, to moo bovine.
-----BEGIN PGP SIGNATURE-----
Comment: Processed by Mailcrypt 3.4, an Emacs/PGP interface
-----END PGP SIGNATURE-----