On Tue, Aug 08, 2000 at 10:25:11PM +0800, Jason Lim wrote:
> Hi all,
>
> Actually, I need advise in dual-homing policy with our lease line
> customers. We have encountered some issues on lease lines customers
> wanting to dual-home their connection with our ISP(ISP1) and other
> ISP(ISP2) and this demand is growing. For example, a customer with two
> connection to ISP1(AS100) and ISP2(AS200) would be getting 203.222.100/24
> from ISP1 and 155.169.22/24 from ISP2. Customers wants redundency by
> asking ISP1 to advertise 155.69.22/24 and ISP2 to advertise
> 203.127.100/24 as well.
>
> The reasons why it's an issue because
>
> 1) These customers are not running BGP. I understand that conditional
> advertisment with BGP can solve the problem.
> 2) These customers wants ISP1 to advertise IPA blk which belong to
> other ISP2 and likewise for ISP2 to advertise ISP's IPA
>
> Well, currently there is now no mutual agreement with other ISPs to do so.
>
> I would like to know :
> 1) How will like to know how will it impact ISP1 and ISP2 in term of
> routing advertisment,tables,etc ?
> 2) Will ISP1 and ISP2 have problems of routing holes for advertising
> routes belonging to other ISPs' ASes.
>
> I am not sure if there are any other technical implication.
> How does other ISPs in US or other parts of the world
> dual-homed their customers' who do not run BGP(only statics route)?
> What are the pros/cons of doing/not doing this ??
Here we plain refuse to do it.
/Jesper
-- Jesper Skriver, jesper(at)skriver(dot)dk - CCIE #5456 Work: Network manager @ AS3292 (Tele Danmark DataNetworks) Private: Geek @ AS2109 (A much smaller network ;-)One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them.
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