The IPv6 Travesty that is Cogent's refusal to peer Hurricane Electric - and how to solve it

Wed Jan 27 07:31:57 UTC 2016

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 <jmaimon at 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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