[c-nsp] Best Routing Protocol for Scenario

[Rodney Dunn]

Can you draw a jpeg that shows the layout?

That's a lot easier than trying to draw it from email.

Rodney


On Thu, May 31, 2007 at 01:11:38PM -0400, Paul Stewart wrote:
> Hi folks...
> 
> A while back (month or so) I posed a few questions about Policy Based
> Routing - thinking that was best way to conquer a new challenge... now I'm
> not so sure so looking for input.
> 
> Here's the layout and what I want to accomplish....
> 
> Customer premise has a Cisco 3662 router.  From the 3662 we have 2 TI's
> leaving and 2 Ethernet connections leaving towards a 6509 back in our data
> center.  The 2 T1's go to a remote POP where they terminate on a Cisco 3640
> router.  The Cisco 3640 router connects to a Cisco 7206VXR which in turn
> connects via TLS back to the same 6509 in our data center.  The ethernet
> connections leaving the customer site from the Cisco 3662 connect directly
> back to the 6509 with speeds of 6 Mb/s X 800Kb/s each.  The T1's are full
> 1.544 Mb/s.
> 
> So, one router at customer premise that needs to connect back to one router
> in our data center using 4 paths.  The pair of T1's and the pair of ethernet
> ports should be "bonded" or load balanced.  Traditionally this has been done
> via OSPF/CEF on our side of things.
> 
> We want all VOIP traffic passing between the customer site and our data
> center to travel via the T1 circuits and all Internet traffic to go via the
> ethernet connections.
> 
> I'm looking for the best routing protocol in this scenario that will allow
> me to use route-maps (or other alternatives) to identify source IP and
> destination IP subnets and apply priority.  At the same time if the "far
> end" of each connection is unavailable then I want the traffic to "fallover"
> to the other connections as a backup automatically.
> 
> I had though at one point that OSPF would be ideal but I'm not aware of a
> way to apply a route-map to OSPF specifying only certain traffic prefers a
> certain path.  We do this all the time with BGP so I though maybe iBGP could
> be applied here but I have the feeling that there is a better solution....
> 
> Open to ideas and appreciate it...
> 
> Paul
> 
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