12-07-2012 10:35 AM - edited 03-04-2019 06:21 PM
I have the following set up, at one of our sites:
What I would like to do is take non 10.x.x.x web traffic, and pipe it through the ISP2 link, and keep all other 10.x.x.x traffic over the main ISP1 link. I would like to set this up on the L3 3750's that we have. Here is my configuration for the 3750's (IP's have been changed for security):
track 222 ip sla 222 reachability
track 223 ip sla 223 reachability
ip access-list extended INTERNETTRAFFIC
permit tcp 10.1.1.0 0.0.1.255 any eq www - Internet LAN subnet
permit tcp any 10.1.1.0 0.0.1.255 eq www
permit tcp any eq www 10.1.1.0 0.0.1.255
ip access-list extended NONINTERNETTRAFFIC
permit tcp 10.1.1.0 0.0.1.255 10.0.0.0 0.255.255.255 eq www
permit tcp 10.0.0.0 0.255.255.255 10.1.1.0 0.0.1.255 eq www
deny tcp 10.1.1.0 0.0.1.255 any eq www
ip sla 222
path-echo 10.58.2.49 - GRE Tunnel on ISP 2
ip sla schedule 222 life forever start-time now
ip sla 223
path-echo 10.40.0.190 - MPLS Link on ISP 1
ip sla schedule223 life forever start-time now
route-map INTERNET_TRAFFIC permit 10
match ip address NON_INTERNET_TRAFFIC
set ip next-hop verify-availability 10.40.0.190 10 track 223
set ip next-hop verify-availability 10.40.2.1 20 track 222 - IP of backup VPN router interface
ip policy route-map INTERNET
route-map INTERNETTRAFFIC permit 20
match ip address INTERNETTRAFFIC
set ip next-hop verify-availability 10.40.2.1 30 track 222
set ip next-hop verify-availability 10.40.0.190 40 track 223
interface vlan 99 – internal LAN subnet
ip policy route-map INTERNETRAFFIC
I'm applying the policy route-map to the VLAN interface, but do not see any traffic, once I apply the interface. I'm not that experienced, with route-maps, so I was hoping that someone could assist. I really do appreciate it!
12-07-2012 11:29 AM
Hi,
It's not so clear from what subnets, what ip addresses of ISPs. Diagram of network topology would be helpful.
Sent from Cisco Technical Support iPhone App
12-07-2012 12:35 PM
Abzal,
Thank you for your reply back. I'm not sure if the image that I included, in the original post, is visible. If not, I can attach another. To answer your questions, let's say that ISP 1, which would be our MPLS link has an address of 3.3.3.3 (ISP1), our GRE tunnel provider, which is ISP 2, would have an address of 2.2.2.2 (ISP 2). Our local LAN subnet would be 10.1.1.0/22. I would like all 10.1.1.0/22 traffic, going to non 10.x.x.x HTTP/HTTPS traffic to flow over the ISP2 link, while all other 10.1.1.0/22 traffic goes over the ISP1 link. I hope that helps. Please let me know if it doesn't. Thanks!
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