[c-nsp] Policy Based Routing Question

[Paul Stewart]

Thanks Roland...

Site C is the ultimate destination of all traffic (our core network).  There
is no BGP involved, only OSPF.  The solution is totally within our IP space
and managed by ourselves.

The T1's will be loadbalanced via CEF/OSPF.  The same load balancing applies
on the dual ADSL link as well (forgot to mention that earlier).  Load
balanced on both sides of both links.

The reason for wanting this traffic manipulated is that we are providing
voice and data services.  The voice services should take a primary route via
the T1's and the data services should take a primary route via the ADSL
connections.   The thought was to have one router onsite combining all the
traffic so that if there was an outage, we could dynamically re-route
traffic versus having the voice and data totally separate.  To clarify the
voice portion, it is VOIP on the T1's, not PRI ;)

Since all the voice traffic originates and terminates from one particular IP
on our core network I was hoping to do this via IP address or subnet.

Thanks in advance,

Paul
 

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Roland Dobbins
Sent: Tuesday, April 03, 2007 3:55 PM
To: Cisco-NSP Mailing List
Subject: Re: [c-nsp] Policy Based Routing Question


On Apr 3, 2007, at 12:22 PM, Paul Stewart wrote:

> Can I do this with policy based routing? ;)

Is the ultimate destination of -all- the traffic originating from Site B (or
northbound of there) Site A, from your perspective?  Is there any BGP
involved, or is Site A participating in your IGP, or  
just taking default from you?  What about Site C, same questions?   
Also, how are the T1s loadbalanced, and are they loadbalanced on both the PE
and CPE sides?

When you say you want the inbound/outbound traffic to be symmetrical in
nature, is this because you require that symmetry because of a stateful
firewall or some other kind of policy-enforcement device which needs to see
both sides of each conversation?

-----------------------------------------------------------------------
Roland Dobbins <rdobbins at cisco.com> // 408.527.6376 voice

         Words that come from a machine have no soul.

                       -- Duong Van Ngo

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