[j-nsp] Longest Match for LDP (RFC5283)

James Bensley jwbensley at gmail.com
Mon Jul 30 11:13:30 EDT 2018


On 30 July 2018 at 15:22, Krzysztof Szarkowicz <kszarkowicz at gmail.com> wrote:
> James,
>
> As mentioned in my earlier mail, you can use it even with DU. If ABR has
> 10000 /32 LDP FECs, you can configure LDP export policy on ABR to send only
> subset (e. g. 20 /32 FECs) to access.
>
> Saying that, typical deployment is with DoD, since typically access PEs (and
> not ABRs) have better knowledge which loop backs are needed. So, basically
> access PEs send the info to ABR, which loop backs are needed, and which loop
> backs are not needed via LDP DoD machinery.

Hi Kryzstof,

This was exactly my point:

> On Mon, Jul 30, 2018, 11:15 James Bensley <jwbensley at gmail.com> wrote:
>> unless we create horrible per-LDP
>> neighbour policies on the agg node that only allow the labels for the
>> exact loopbacks that access node needs to reach.

Cheers,
James.


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