From: Hyunseog Ryu (r.hyunseog@ieee.org)
Date: Sun Jul 29 2007 - 16:54:54 ART
But ins that case, routing policy from Customers with Private ASN will
be disappeared from Internet.
The reason why they have unique ASN is that they are running their own
routing policy different from Providers, and others.
Currently vendors are working on 4-byte ASN instead current 2-byte ASN,
and it will be backward compatibility with 2-byte ASN.
Hyun
Herbert Maosa wrote:
> If you dont have your own ASN, you will most likely have to use a private
> ASN to connect to the two ISPs. Remember that if you use the ISPs ASN then
> you are an extension of that ISP. Using the private ASN in this case will
> permit you to be totally provider independent.
>
> regards,
>
> Herbert.
>
> On 7/29/07, Gregory Gombas <ggombas@gmail.com> wrote:
>
>> When connecting to the internet via two different ISP's, why is it
>> necessary to have a unique AS?
>>
>> What if you simply configured your BGP router with the same AS number
>> as one of your ISP's?
>>
>> Considering there are only 64511 unique AS numbers, I assume that most
>> if not all the AS numbers are already taken. What do companies do in
>> the case they cannot get their own AS number and need to multihome?
>>
>> Thanks,
>> Greg
>>
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