RE: originated from BGP

From: Scott Morris (swm@emanon.com)
Date: Mon Jul 17 2006 - 03:40:49 ART

Originated means where did the network start? Who used the "network" or
"redistribute" command in order to first stick it into the BGP process.

Learned means who is your neighbor? What is the next-hop to get to that
route?

HTH,

Scott

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of shi
bindong
Sent: Monday, July 17, 2006 2:35 AM
To: swm@emanon.com
Cc: ccielab@groupstudy.com
Subject: Re: originated from BGP

hi:
thanks for your reply, may I know what is the difference between originated
and learned... for example, in the AS 54, I announce a network
(10.1.1.0/24), it is originated from AS54, and other AS BGP peer can learn
the network (learned from)?

On 7/17/06, Scott Morris <swm@emanon.com> wrote:
>
> Things ORIGINATED from the AS will be at the end of the AS string
> (Cisco's Docs are correct).
>
> Things LEARNED from the AS will be at the beginning of the AS string
> (IE would be correct if this were the question).
>
> HTH,
>
>
> Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
> JNCIE #153, CISSP, et al.
> CCSI/JNCI-M/JNCI-J
> smorris@ipexpert.com
> http://www.ipexpert.com
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of bindong.shi@gmail.com
> Sent: Monday, July 17, 2006 2:21 AM
> To: ccielab@groupstudy.com
> Subject: originated from BGP
>
> hi group:
> Now I am gettign confuesd about the BGP regular expression, how to
> configure traffic "orignated from AS 54"?
> from cisco website:
> http://www.cisco.com/warp/public/459/26.html
> it is "ip as-path access-list 1 permit _54$"
> but from IEWB solution guide:
> it is "ip as-path access-list 1 permit ^54_"
>
> which one is correct?
>
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--
your friends

bindong

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