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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Split flows across Domains
Joe Abley <[email protected]> writes: > On 24-Jan-2006, at 13:09, Robert E.Seastrom wrote: > >> Joe Abley <[email protected]> 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
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