[j-nsp] Policy Statement Question

[Guy Davies]

Hi Chris,

I'm not sure about what Cogent are offering here.  Are they offering
to prepend a 174 on all routes they advertise to you or are they
offering to prepend another 174 (in addition to the one they'd add
anyway) to your prefixes when they are advertised to their neighbours?

If the former, then yes, that is exactly what you need (although it is
still a pretty blunt instrument).  If the latter, then it has no
different impact than you prepending your AS before advertising it to
Cogent.

Rgds,

Guy

On 28/01/06, Chris Davies <mcd at daviesinc.com> wrote:
>
>
> Guy Davies wrote:
> > Hi Chris,
> >
> > AS path prepending is normally used to make a particular upstream less
> > attractive to the rest of the Internet as a path *to* you rather than
> > making it less attractive to you as a path to the rest of the
> > Internet.  If you are trying to influence inbound traffic then this is
>
> I was thinking that was too 'easy' a solution.
>
> That's what I thought.  What if I use a community with Cogent to ASPad
> 174 1 time?  If I set :3001 on my route announcements, cogent would pad
> my routes with an extra 174 -- that would give me the desired behavior
> wouldn't it?
>