From: Narbik Kocharians (narbikk@gmail.com)
Date: Mon Oct 20 2008 - 12:46:58 ARST
I am sorry for a delayed response, but i am in and out of the class room in
Malaysia, but here is a link that will show you examples of one reason that
this may be configued.
http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a00800949cd.shtml
Hope this helps.
On Mon, Oct 20, 2008 at 7:33 AM, Marko Milivojevic <markom@markom.info>wrote:
> > good examples, what are some of the real world examples that can use some
> of
> > the scenarios stated?
>
> One that I can remember from the top of my head is GPRS roaming where
> traffic is usually exchanged over GPRS Roaming Exchange (GRX) points
> or direct peering, similarly to Internet. One difference is that AS
> numbers in use there are not assigned by "IANA-appointed" RIR's (ARIN,
> RIPE NCC, APNIC, etc.), but GSM Forum. Now, some of us who run modern
> networks (sometimes dubbed NGN) don't have separate infrastructure for
> Internet, GPRS, etc. but rather use the same multiservice transport
> network for it all. In order to exchange GPRS traffic, we need to hide
> our real AS number and present one assigned by GSM Forum. Silly.
>
> Another example would be if a carrier/service provider is providing
> transport for another service provider who absolutely insists that
> carrier's carrier network is not visible by 3rd parties. That was all
> external peerings may be done with carrier's ASN.
>
> --
> Marko
> CCIE #18427
> My network blog: http://cisco.markom.info/
>
>
> Blogs and organic groups at http://www.ccie.net
>
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-- Narbik Kocharians CCSI#30832, CCIE# 12410 (R&S, SP, Security) www.MicronicsTraining www.Net-Workbooks.com Sr. Technical InstructorBlogs and organic groups at http://www.ccie.net
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