Re: Aggregate in bgp

Thanks Mr.Scott and Mr.Bryan for ur reply.As I understand Network command in
bgp different then IGP in bgp we should match our network command with
interface.mean if I have interface loopback with /24 then in network command
mask should be 255.255.255.0 other wise it will work.I'm right ?
Because BGP import routes from RIB to its Local RIB ..

Thanks.

On Tue, May 12, 2009 at 5:35 PM, Scott Morris <
smorris_at_internetworkexpert.com> wrote:

> Just to further clarify... Even if you used the network command with a /16
> mask in other protocols it would not create an all-inclusive route either.
> That's the job of summarization/aggregation to do that.
> HTH,
>
> Scott
>
>
> marish shah wrote:
>
>> HI Expert,
>> One Q, I'm doing one lab of bgp in this lab there is one
>> task ( Advertise 155.1.0.0 with ,mask 255.255.0.0 to external ebgp router)
>> now he did this thing through aggregate-address
>>
>> R6 which is connected with BB1 .R1 in bgp 100 and BB1 in bgp 54
>> So on R6 configuration for advertise 155.1.0.0 255.255.0.0 to BB1
>>
>> R6
>>
>> neighbor 54.1.1.254 remote-as 54
>> aggregate-address 155.1.0.0 mask 255.255.0.0
>>
>>
>> So my Q is why he use this aggregate to advertise subnet .Y he didn't use
>> network command ( network 155.1.0.0 mask 255.255.0.0 ) .
>>
>> If this Q is silly so plz forgive me but I really want to know y he
>> did'nt
>> do through this why.
>>
>> Thanks.
>>
>>
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Received on Tue May 12 2009 - 18:04:02 ART