[c-nsp] L3VPN works, but not default route

[Robert Raszuk]

Hi Aaron,

Are you sure those type 3s do not come with DN bit set ?

RFC4577:

4.2.5.1.  The DN Bit

    When a type 3 LSA is sent from a PE router to a CE router, the DN bit
    [OSPF-DN] in the LSA Options field MUST be set.  This is used to
    ensure that if any CE router sends this type 3 LSA to a PE router,
    the PE router will not redistribute it further.

Thx,
R.

> Is there a reason why my pe's only install type 5 routes from the ospf
> neighboring ce?
>
> In other words, on the pe, I see lots of type-3's in the vrf-specific ospf
> db learned from the directly connected ce...but in this pe, I only see type
> 5's installed in vrf rib, and thus, subsequently, only those type-5's are
> redis'd to remotely located pe's where other member vrf are located.
>
> Aaron
>
> -----Original Message-----
> From: Bruce Pinsky [mailto:bep at whack.org]
> Sent: Thursday, April 19, 2012 1:42 PM
> To: Aaron
> Cc: 'Tim Durack'; oboehmer at cisco.com; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] L3VPN works, but not default route
>
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> Aaron wrote:
>> I didn't have to use import, and they still came into vrf. ?  any idea
> why?
>>
>
> With unique RD, each route advertised by each PE is considered a separate
> prefix with a different nexthop.  So, bestpath is run for each of those
> unique RD/Prefixes and the bestpath is then imported into the VRF.
>
> maximum-paths only comes into play when you have more than one nexthop for
> each unique RD/prefix (such as when you have redundant RRs).
>
> - --
> =========
> bep
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