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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Anycast 101
On 17-dec-04, at 11:23, Joe Shen wrote: is there any problem or anything must be taken care about when anycast is employed within a DNS server farm within MAN? Since OSPF generally converges orders of magnitude faster and it's easier to get OSPF to select the highest bandwidth/lowest latency path than BGP, this should be easier. The problem of how to revoke the anycast route when the service goes away is pretty much the same. The benefits (especially latency) are also likely to be less, though.What I mean is, if we want to employ anycast in a cache server farm which is located within a big OSPF network, is there anything problemetic ? or should we consider anycast only when root server is to be installed ? The only problem that is unsolvable without anycast is getting response times below 25 ms or so in every corner of the world. In all other cases it all depends on the pros and cons of different ways to get the job done.Some people said, it's not needed to set up anycast in MAN because DNS system in such situation is very small ( less than 10 SUN servers ).
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