Re: ospf domain-id

Great write up Adam, nice examples

--
BR
Tony
Sent from my iPad
On 11 Jan 2013, at 23:33, Adam Booth <adam.booth_at_gmail.com> wrote:
> Hi,
> 
> OSPF process id by default implies the domain-id.
> 
> As was pointed out by Brian and Marko, keeping the domain-id the same, the
> PE that redistributes from MB-BGP into OSPF will make the LSAs be type 3
> instead of type 5.
> If you wanted to have routes between CEs appear in the same area even
> though they are connected through the MPLS base VPN, you need to look at
> sham-links which are in many ways like a virtual-link.  With sham-links,
> the domain-id doesn't come into play at all though.
> 
> This was my exploration of the subject -
> http://noshut.blogspot.com/2011/08/ospf-domain-id-and-sham-links.html
> 
> Cheers,
> Adam
> 
> 
> On Sat, Jan 12, 2013 at 3:08 AM, Tauseef Khan <tasneemjan_at_googlemail.com>wrote:
> 
>> Do i need to match domain id on all the PE routers connecting customer
>> sites for mbgp routes to correctly redistributed into ospf. OR domain-id
>> could be different on PEs as below.
>> 
>> 
>> Router_A
>> ip ospf 10 vrf CUSTOMER_A
>> domain-id 1.1.1.1
>> !
>> ip vrf CUSTOMER_A
>> rd 10:10
>> route-target both 10:10
>> 
>> 
>> RouterB
>> ip ospf 10 vrf CUSTOMER_A
>> domain-id 2.2.2.2
>> !
>> p vrf CUSTOMER_A
>> rd 20:20
>> route-target both 10:10
>> 
>> regards
>> 
>> 
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