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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Single IP routing problems through Level3
Matt Palmer wrote: A multiple-link bundle which is load balanced by source/destination pair with an undetected dud link? I hadn't thought of that, but it does make an *awful* lot of sense.... I've also seen interesting OSPF misconfigurations that resulted in a router doing path-wise load balancing between the live link and an unroutable destination address that went into the bit bucket. On the Cisco boxes I was using at the time, the hallmark of load-balancing into a dead path was that every other IP address worked, but then every some number of addresses (12, as I remember, but I'm not 100% sure) the polarity flipped, so that whichever of odd vs even had worked before was now the one that didn't for the next N addresses. Artifact of the hash algorithm in use, no doubt. Matthew Kaufman [email protected] http://www.matthew.at
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