Re: Multihoming without AS

["Matthew Robinson" <]

Thank you for your feedback. In answer to the 'working together' providers
it is not nescessary for them to be working together as you could simply buy
co-location. All provider B does is advertise a /19 of address space and
route it to provider A's router. Provider A's router could be on the end of
a leased line in neutral co-location facilities.

We tried to steer away from NAT and policy routing as it makes things
complicated. We liked the 'real' address space and many of our customers
would demand this.

Kind regards

Matthew
----- Original Message -----
From: "Corneliu Tanasa" ctanasa@localhost
To: "Matthew Robinson" matthew@localhost
Sent: Thursday, October 19, 2000 2:10 PM
Subject: Re: Multihoming without AS


> Hi Matthew,
>
> I have a working scenario, which is slightly different than yours by the
fact
> that the customer have a /28 (or /27) from each A and B providers.  The
customer
> is running NAT and also is balancing the traffic on both links (policy
routing)
> with floating default route to assure full backup of the links.  Having
chunks
> of /24 allocated to each customer, then there is no issue with the bunch
of /24
> announced, because each provider (ISP) will continue to advertise his /19
or
> whatever.  Also, in your scenario, there is the assumption that provider A
and B
> are not competitors and they'll work together on behalf of the community
:-)
> Kind regards,
> Corneliu Tanasa
>