Re: Router-ID & BGP address-family questions

1- typically when you have several loopbacks and you want to make sure your ospf virtual-links will survive after any reload.

2- when you are using mbgp to communicate with several differents vrf's inside an mpls vpn core.

3- if you have one interface with ip unnumbered associated with a loopback and you advertise it into an igp of your choice, it will not only advertise the loopback but also the physical link itself, in other words, both will be reachable.

Sent using my Iphone

Em 31/01/2011, C s 15:21, Hussam EL Kebbi <hussamkibbi_at_hotmail.com> escreveu:

> Hi experts,
>
> any idea?
>
> Thanks,
>
>
>
>> From: hussamkibbi_at_hotmail.com
>> To: ccielab_at_groupstudy.com
>> Subject: Router-ID & BGP address-family questions
>> Date: Mon, 31 Jan 2011 12:57:18 +0000
>>
>> Hi Experts,
>> I have 3 general questions:
>> 1 - When it is necessary to put router-id manually (whether OSPF, BGP)....?
>> during MPLS?MPBGP?IPv6....
>> 2 - when do we need to put under bgp: no bgp default ipv4-unicast ? and use
>> address-family ipv4?
>> 3 - if we have interface as ip unnumbered, can we include its subnet (taken
>> from loopback not in routing protocol) in routing protocol?
>> Please clarify these points!!!
>>
>> Thanks,
>>
>>
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>
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Received on Mon Jan 31 2011 - 19:52:36 ART