nanog mailing list archives
Re: Split flows across Domains
From: Robert E.Seastrom <rs () seastrom com>
Date: Tue, 24 Jan 2006 13:20:13 -0500
Joe Abley <jabley () isc org> writes:
On 24-Jan-2006, at 13:09, Robert E.Seastrom wrote:Joe Abley <jabley () isc org> writes:If you can get two candidate routes for the same destination into the FIB, then you'll get per-flow load balancing as long as CEF is running, no?Yes and no. CEF is {src, dst} hash IIRC, and "per-flow" usually means {src, srcport, dst, dstport, [proto, tos]} hash in my experience.Even if the hash is only calculated over source and destination IP addresses, the end effect is still that packets associated with a single flow still follow the same route where there is more than one candidate route available.
And conversely, that different flows that ought to be load-balanced aren't. But we're splitting semantic hairs here... ;-) ---rob
Current thread:
- Split flows across Domains Glen Kent (Jan 24)
- Re: Split flows across Domains Robert E . Seastrom (Jan 24)
- Re: Split flows across Domains Christopher L. Morrow (Jan 24)
- Re: Split flows across Domains Robert E . Seastrom (Jan 24)
- Re: Split flows across Domains Joe Abley (Jan 24)
- Re: Split flows across Domains Joe Abley (Jan 24)
- Re: Split flows across Domains Robert E . Seastrom (Jan 24)
- Re: Split flows across Domains Joe Abley (Jan 24)
- Re: Split flows across Domains Robert E . Seastrom (Jan 24)
- Re: Split flows across Domains Simon Leinen (Jan 25)
- Re: Split flows across Domains Christopher L. Morrow (Jan 24)
- Re: Split flows across Domains Christopher L. Morrow (Jan 24)
- Re: Split flows across Domains Matt Buford (Jan 24)
- Re: Split flows across Domains Joe Abley (Jan 24)
- Re: Split flows across Domains Steven M. Bellovin (Jan 25)
- Re: Split flows across Domains Robert E . Seastrom (Jan 24)