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Re: Transit LAN vs. Individual LANs
On Sun, 26 Feb 2006 08:41:45 +1030 Mark Smith <[email protected]> wrote: To qualify this better, there are no DR/BDR on the segment at all, rather than there being ones that just aren't used : > Automatic nighbour discovery via multicast hellos still happens, the > difference is that the routers establish direct adjacencies between each > other, rather than with the DR. While this costs additional RAM, and CPU > during the SPF calc, the benefit of avoiding DR/BDR elections, and the > 'DR/BDR' approximately 40 second listening phase when a third and > subsequent routers come online may be well worth those costs. > -- "Sheep are slow and tasty, and therefore must remain constantly alert." - Bruce Schneier, "Beyond Fear"