04-05-2007 07:38 AM - edited 03-03-2019 04:26 PM
I have a set up betwen 2 locations connected by 2 parallel links.One link is 2M & another is 10M.Between 2 location there are 2 critical servers which needs be communicated on priority.I want to route traffic ONLY for these servers from 2M link. while resr all other traffic between 2 locations should go from 10M link.How can I achieve this by policy based routing or do I need to use tracking option ??
Also if 2M link will be down,all traffic should go via 10M & vice a versa.
Please help
04-05-2007 08:00 AM
You can install two static routes for that server. One for 2M link and other, with higher metric, to 10M link. This assumes that the interface goes down as soon as the 2M link goes down.
Thanks.
04-05-2007 08:00 AM
A standard policy routing configuration should be sufficient. If the next-hop is unreachable the router would, by default, forward the traffic based on the alternate route in the routing table. You can use a config similar to this one;
int e0
ip add 192.168.1.1 255.255.255.0
ip policy route-map test
int s0
descripton 2mb link
ip add 10.1.1.1 255.255.255.252
int s1
description 10mb link
ip add 10.1.2.1 255.255.255.252
route-map test permit 10
match ip add 100
set ip next-hop 10.1.1.2
route-map test permit 20
match ip add 101
set ip next-hop 10.1.2.2
access-list 100 permit ip any
access-list 101 permit ip any any
HTH
Sundar
04-09-2007 06:30 AM
bt i need also when 10 m down then all traffic should be go through on 2m serial link and vice a versa.
is this possible?
04-09-2007 09:46 AM
I would configure your 10Mb as the primary route for all traffic on both sides, and the 2Mb as the secondary. When the primary path goes down the secondary will kick in.
For example
ip route 10.0.0.0 255.255.255.0 172.16.1.2 <-10Mb
ip route 10.0.0.0 255.255.255.0 172.16.1.6 50 <-2Mb
Your policy routing configuration will still use the 2Mb and if it goes down the 10Mb will be used. Just make sure you configure the policy on both sides as noted in a previous posting.
Daniel
04-05-2007 02:48 PM
I'd like to add one little thing to Sundar's
post. That config should be applied on both
ends of the link otherwise assymetric routing
can have place.
Thx,
OW
04-10-2007 03:47 AM
Hi,
Is it right to configure by this way
router eigrp 100
redistribute static
network 192.168.54.0
network 192.168.227.0
auto-summary
Regards,
Karthick.M
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