On 1/25/16 11:06 AM, Jared Mauch wrote: > My understanding is this was mostly legacy from devices that did not > carry full Rib and fib. There were tricks to avoid ending up on these > skinny devices if you wanted. > > Life in the core has changed a lot in recent years from 6500/7600 and > foundry/brocade class devices to a more interesting set in the > pipeline or released. > > There are some limited rib-> fib download boxes that could slice > traffic in cost effective ways that the price conscious consumer will > likely push the market to.
There are also of course variations on this. An an aggregation router may have quite limited FIB, e.g. enough for customer routes yet still have a full rib in it's control-plane, at which point it needs to default towards devices which do have a FIB in place. assuming a single hob peering it would be rather hard to identify this case as a customer, though if your neighbor has an Arista mac address for example that might be a logical conclusion. > Jared Mauch > >> On Jan 22, 2016, at 3:28 PM, Joe Maimon <jmai...@ttec.com> wrote: >> >> >> I have a pending request to get that multi-hop setup. I was told >> that it was now a special request and they would "try" to get it >> done and these days all their routers had full table capacity and >> they no longer used the multi-hop. >
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