Re: stub area in a vrf

[Mani Devarajan <mani_devarajan at NET.COM>]

As we are discussing about vrf-vpn, i have one more question
in that area(sorry for asking in this working group).

Is was trying to test virtual-link across the vrf-vpn. Is it
a valid configuration, does virtual-link will come up.

o----AREA2----o----AREA1----o====VPN====o----AREA0
R1            R2            R3          R4

In the above setup, I was trying to bring up virtual link
between R2 & R4.

Thanks,
Mani

Acee Lindem wrote:

I agree. However, I'd say that even if the PE router is not connected to

multiple areas it should behave as if it one and originate the default. It can use

the OSPF route type in advertised with the BGP extended community to determine

which routes to advertise into the stub area.

 

----- Original Message -----

From: Robert Pineau

To: OSPF at PEACH.EASE.LSOFT.COM

Sent: Thursday, July 29, 2004 9:35 AM

Subject: Re: stub area in a vrf

Hi John, Mani,

What if the VRF was an ABR, and simply supplied a default route to the CE in the stub?

I think this should work and allow the PE-CE link be part of a stub area.

Thanks,
Rob.

-----Original Message-----
From: Mani Devarajan [mailto:mani_devarajan at NET.COM]
Sent: Wednesday, July 28, 2004 8:56 PM
To: OSPF at PEACH.EASE.LSOFT.COM
Subject: Re: stub area in a vrf

Hi Jonh,
 I tried to do similar kind of testing, that is configuring PE-CE link as  stub. But as PE will be ASBR, we cannot configure  it in a stub.

rfc 2328: Section 3.6
 AS boundary routers cannot be placed internal to stub  areas.

Thanks,
Mani

Acee Lindem wrote:

>Hi John,
>
>Note that this draft (draft-ietf-l3vpn-ospf-2547-01.txt) is a product
>of the L3VPN WG and not the OSPF WG. Perhaps Eric or Padma could
>respond.  Although I know how I would handle it I don't think the stub
>area case is covered in the draft.
>
>Thanks,
>Acee
>
>
>----- Original Message -----
>From: "John Pecola" <john_pecola at YAHOO.COM>
>To: <OSPF at PEACH.EASE.LSOFT.COM>
>Sent: Wednesday, July 28, 2004 7:52 PM
>Subject: stub area in a vrf
>
>
>
>
>>Hi,
>>
>>With the 2547 VPNs, a CE router may receive type 3
>>LSAs from a PE for redistributed routes. Assuming that
>>2547 BGP routes are redistributd into ospf on the PE
>>in the vrf (ASBR), can there be a scenario where it is desired to
>>configure the PE-CE link as part of a stub area? Should it be even
>>allowed?
>>
>>Thanks
>>John
>>
>>
>>
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