I wonder why anyone only connected to one ISP would want to reserve an AS
number, since they really don't even have their own IP addresses. I would
suggest to you that you tell this customer that they have to get their own
IP addresses to advertise with their AS. Its ok as long as you are the only
ISP, however the only reason to run BGP is to connect to the Internet via
redundant connections and if they have a connection that they are not
telling you about and they start advertising your IP blocks from everywhere
YOU will have major issues and so will they.
You should explain that if they only have one connection and they are using
your IP's there is no need for BGP or another AS. Something smells fishy.
Lance
""Julian Eccli"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> They can do BGP and send you their prefix which you can advertise and
> you can just send them the default. Policies are two way's, import &
> export. If the customer is only conencted to the net from you and
> they want traffic desitned to their AS to also be able to transit
> through you then you need to ensure that you announce their AS/Prefix
> from your EBGP peering connection to other providers. You then just
> send them a default. IE: Your "import"ing their /24 via BGP to your
> AS and then "export"ing them a default.
>
> If they can't do BGP you could also still announce their prefix block
> from your AS and even prepend their AS to this prefix using route-maps
> (That does not make much sense if they are not doing BGP though).
> Lots of ways to accomplish what you want to do.
>
>
> /julian
>
> ""Erich Kuehn"" wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> : I have a question about BGP advertisments
> :
> : I have a customer who want us to provide BGP peering for him.
> : He has is own ASN and we have sold him a /24 from our block.
> : Currently Im announcing that /24 and other prefix with My BGP peers
> (other
> : providers)
> : The customer wants only to receive default routes from me due to
> their
> : hardware limitations.
> :
> : My question is when I do this do I need to stop announcing the /24
> prefix to
> : my providers since
> : that prefix will in essence orginate from his AS?
> :
> : Erich Kuehn
> :
> : [GroupStudy.com removed an attachment of type image/gif which had a
> name of
> : tech.gif]
> :
> :
> :
> :
> [EMAIL PROTECTED]
> :
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=18296&t=17930
--------------------------------------------------
FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
