nanog mailing list archives
Re: carping about CARP
From: "Robert E. Seastrom" <rs () seastrom com>
Date: Fri, 30 Nov 2012 09:35:10 -0500
Henning Brauer <hb-nanog () bsws de> writes:
* Robert E. Seastrom <rs () seastrom com> [2012-11-30 13:46]:My problem is not with Theo nor with the IETF. My problem is with a crappy and credulous implementation. When an outage is caused by redundancy software that comes from an organization that prides itself on well-written code, the irony meter goes off the scale.vrrp and carp share the vhid space. you have to use unique vhids per network segment, that's about it. the openbsd box was nice enough to tell you about the mac address conflict, the other's didn't.
pfSense is FreeBSD, but who's counting? The problem is magnified when ill-behaved software ends up in appliances. Good thing we were able to get a shell on the box.
if you looked at the carp boxes you had seen that carp had continued to work just fine. the mac address (which is basically "fixed prefix + vhid) conflict is your "outage". there's nothing we could do about that. and re IANA, they made it clear they would not give us a proto number no matter what; we didn't have a choice but to ignore that industry-money-driven committee.
Between choosing an Ethernet OUI which was assigned to IANA by IEEE (another "industry-money-driven committee") and choosing protocol 112 (odds of coincidence 1 in what, 120 or so at the time?), "ignore" is not the word I would have chosen here. -r
Current thread:
- carping about CARP Robert E. Seastrom (Nov 29)
- Re: carping about CARP Christopher Morrow (Nov 29)
- Re: carping about CARP Randy Bush (Nov 30)
- Re: carping about CARP Stuart Henderson (Nov 30)
- Re: carping about CARP Randy Bush (Nov 30)
- Re: carping about CARP David Walker (Nov 30)
- Re: carping about CARP Robert E. Seastrom (Nov 30)
- Re: carping about CARP Henning Brauer (Nov 30)
- Re: carping about CARP Robert E. Seastrom (Nov 30)
- Re: carping about CARP David Conrad (Nov 30)
- Re: carping about CARP Doug Barton (Nov 30)
- Re: carping about CARP Claudio Jeker (Nov 30)
- Re: carping about CARP Andrew Sullivan (Nov 30)
- Re: carping about CARP Nick Hilliard (Nov 30)
- Re: carping about CARP Robert E. Seastrom (Nov 30)
- Re: carping about CARP Christopher Morrow (Nov 29)
- Re: carping about CARP David Walker (Nov 30)
- Re: carping about CARP Andrew Sullivan (Nov 30)
- Re: carping about CARP Owen DeLong (Nov 30)
- Re: carping about CARP Robert E. Seastrom (Nov 30)