[c-nsp] bgp transit, selecting providers based on source IP

[Wayne Lee]

Thanks guys


Currently I'm using a route-map to set next-hop to just one of my
upstreams (not good I know, It's a knee jerk reaction until I can get
something better in place)

I've not run any mpls or vrf's yet nor do I know how to use them (I'm
well out of my depth here), if anybody has a config snippet they would
like to share I'd be very grateful.

The connection to the customer comes in via a third party (they are
using mpls, pseudo-wire) vlan and sits on a gig switch (non-cisco)
which is then vlan'ed onto a
7206vxr G1 which has the main upsteam plus the secondary, the third
upstream is on a separate router (different building) connected via
iBGP.

The 7206 is pretty busy as it's running VPDN/L2TP ADSL connections as
well as eBGP,iBGP and OSPF, there is plenty of ram left and the cpu is
about 25% avg.

I could give them access via just one upstream as they do have another provider.


help

Wayne





On Tue, Mar 25, 2008 at 10:54 PM, Bruce Pinsky <bep at whack.org> wrote:
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>  Wayne Lee wrote:
>  > Hi List
>  >
>  > We currently have 3 transit providers. all works as expected. We
>  > recently have connected a customer who requires BGP transit from us
>  > but with a twist.
>  >
>  > The customer for whatever reason do not want their traffic going via
>  > our preferred provider, is there any way I can force the customers
>  > outbound traffic to go via my other 2 providers instead?
>  >
>  > I have created the prefix-lists to stop announcing the customers
>  > routes via the main provider so no traffic should return by them. The
>  > customer is multi-homed with another transit provider.
>  >
>  >
>
>  You could either use Policy Based Routing to forward based on their source
>  address range or you could use VRF-Lite to create a separate routing table
>  instance that only includes the routes to 2 out of the 3 providers.
>
>  Which is best would require a bit more info about your environment.
>
>  - --
>  =========
>  bep
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