How many legitimate cases when Origin AS in BGP announcement changed by another AS?

2011-01-04 Thread Akmal Shahbaz
Hi I am looking for example routing policies when any AS receiving BGP advertisement changes Origin AS in BGP AS set attribute to remove the received AS number and puts its own AS number.[legitimate cases] 1. customer AS advertises the prefix however provider AS announce the aggregate(super

Re: How many legitimate cases when Origin AS in BGP announcement changed by another AS?

2011-01-04 Thread Stephane Bortzmeyer
On Tue, Jan 04, 2011 at 04:38:19AM -0800, Akmal Shahbaz akmal_shah...@yahoo.com wrote a message of 443 lines which said: I am looking for example routing policies when any AS receiving BGP advertisement changes Origin AS in BGP AS set attribute to remove the received AS number and puts its

Re: How many legitimate cases when Origin AS in BGP announcement changed by another AS?

2011-01-04 Thread Akmal Shahbaz
Subject: Re: How many legitimate cases when Origin AS in BGP announcement changed by another AS? To: Akmal Shahbaz akmal_shah...@yahoo.com Cc: nanog@nanog.org Date: Tuesday, January 4, 2011, 4:05 PM On Tue, Jan 04, 2011 at 04:38:19AM -0800, Akmal Shahbaz akmal_shah...@yahoo.com wrote a message

Re: How many legitimate cases when Origin AS in BGP announcement changed by another AS?

2011-01-04 Thread Stephane Bortzmeyer
On Tue, Jan 04, 2011 at 08:22:35AM -0800, Akmal Shahbaz akmal_shah...@yahoo.com wrote a message of 44 lines which said: When the old origin AS was a private one? NO.Even when old origin AS is not private one. You misunderstood me. I replied to your query When is it legitimate to change an