Very tough routing question

[mikeleahy]

hi
i have a site that is connected to another one via leased line. there are several different subnets in each office that are controlled by vlans. in the main site there are two connections to the internet (one for redundancy) and there are two default routes (one with a higher cost so it will only take effect if the primary route goes down).The route with the higher cost send traffic out through the second internet connection if the first one fails. the other site is going to have one connection to the net. but the customers wants the following:

if the internet in site two goes down then all internet traffic is redirected over the leased line to the main site and out to the net and

if the internet in site one goes down then its internet traffic is sent to site two and out over the net.

can you help me with how to do this please???

 

[plshlpme]

you should be able to do the same with your weighted static routes.

you are running a routing protocol between the two locations right?

so if you have
ip route 0.0.0.0 0.0.0.0 <local isp interface>
and
ip route 0.0.0.0 0.0.0.0 <gateway to other office> 100

repeat that at both locations and it should give you the desired effect.

 

[mikeleahy]

thanks for that man. do you know if you can establish a permanent vpn connection between two cisco routers the same way you can do it with sonicwalls???

 

[plshlpme]

im not sure how sonicwalls work.. but you can create ipsec vpn tunnels between cisco routers..
do a search on these forums im sure its been covered to death

try something like this though

http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a00800949ef.shtml

 

[mikeleahy]

yeah but are these permanent tunnels or do they have to established whenever someone wants to connect

 

[plshlpme]

ipsec tunnels can be left up permanently