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Policy Based Routing question...

We have 4 remote sites, all connecting back to the main site's router via frame relay. On the main router, each branches network is coming in on serial subinterfaces. I should also include that each branch has no less than 4 networks (LANs) each inside.

I need to write a PBR instruction set on the main router that would send traffic from one specific network in each branch to e1/0 interface of the main router. But I need all of the other traffic to use the default route table to the e0/0 interface. First, can I use PBR on subinterfaces? If so, how would the PBR statements look in the main router after:

access-list 1 permit ip xxx.xxx.xxx.xxx

route-map branch1 permit 10

match ip address 1

set next-hop ethernet 1/0

Thanks for any help,

m~

  • Other Network Infrastructure Subjects
1 REPLY
Purple

Re: Policy Based Routing question...

Hi,

You can apply PBR to sub-interfaces and your config above should do it except for one thing: specify a next-hop IP address with the 'set next-hop ethernet 1/0' that points to the router which you use to reach the required destination. If you don't do this, your main router will ARP for every destination address on Eth1/0 which is not actually desirable.

HTH\,

Paresh

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