nanog mailing list archives
Re: IGPs and services?
From: "Stephen Sprunk" <ssprunk () cisco com>
Date: Fri, 19 May 2000 13:01:03 -0500
Sez "Brandon Ross" <bross () netrail net>
What platform adds static routes in response to PMTU discovery? I've never seen that before. What purpose does it serve to add statics?
Some
kind of caching of MTU per destination?
This is actually very common in "off-brand" (ie. anything besides Linux, *BSD, and Solaris) IP stacks. The current shipping versions of many OSes do some very odd things: cache a static route upon performing PMTUD, cache static routes to one of multiple default gateways, refuse to honor gratuitous ARPs, refuse to time out ARP entries, cache ARP entries with mcast MACs, cache ICMP redirects classfully, etc. What's worse is these "caches" tend to be permanent, usually not even allowing manual overrides (other than a reboot). S | | Stephen Sprunk, K5SSS, CCIE #3723 :|: :|: Network Consulting Engineer, NSA :|||: :|||: 14875 Landmark Blvd #400; Dallas, TX .:|||||||:..:|||||||:. Email: ssprunk () cisco com
Current thread:
- RE: IGPs and services?, (continued)
- RE: IGPs and services? Roeland M.J. Meyer (May 16)
- Re: IGPs and services? Valdis . Kletnieks (May 16)
- Re: IGPs and services? R.P. Aditya (May 16)
- Re: IGPs and services? nicholas harteau (May 17)
- RE: IGPs and services? jlewis (May 17)
- Re: IGPs and services? Bryan C. Andregg (May 18)
- Re: IGPs and services? jlewis (May 18)
- Re: IGPs and services? Valdis . Kletnieks (May 18)
- Re: IGPs and services? Brandon Ross (May 18)
- Re: IGPs and services? Valdis . Kletnieks (May 19)
- Re: IGPs and services? Stephen Sprunk (May 19)
- Re: IGPs and services? Neil J. McRae (May 19)
- RE: IGPs and services? Roeland M.J. Meyer (May 16)
- RE: IGPs and services? Roeland Meyer (E-mail) (May 19)
- Re: IGPs and services? ww (May 18)
- Re: IGPs and services? Andrew Brown (May 18)