05-11-2006 03:10 AM
We hv a customer setup as per attached topology.
Primary leased line with ISDN fallback from Service Provider-1.
Proposed Secondary backup on RF from Service Provider-2.
Router used = Cisco 1800 series.
Objective :- To achieve Link redundancy for inbound and outbound internet traffic.
Hosted servers with natted public IP should be reachable if ISP-1 or ISP-2 link is down.
Pls suggest if we can acheive it and how.
05-11-2006 05:10 AM
Hello,
here is my suggestion :
int ethernet 0
ip address 192.168.1.1 255.255.255.0
ip nat inside
int serial x/y
ip address x.x.x.x x.x.x.x
ip nat outside
int brix/x
int dialer 1
ip address y.y.y.y y.y.y.y (or ip add negociated)
ip nat outside
int ethernet 1
ip address z.z.z.z z.z.z.z
ip nat outside
ip route 0.0.0.0 0.0.0.0 serial x/y
ip route 0.0.0.0 0.0.0.0 dialer 1 220
ip route 0.0.0.0 0.0.0.0 ethernet 1 230
ip nat inside source list 101 pool pool-name [overload]
poo-name is with you registred ip address?
access-list 101 permit ip 192.168.1.0 0.0.0.255 any
Are you using same registered ip address on both ISP?
then second ISP need to advertize it with lower priority
HTH,
cisand
05-12-2006 02:40 AM
Second ISP address will be registered but different from primary ISP public IP's.
Pls advice.
Objective is to use the RF link in standby mode and it should get activated only after primary link (Lease+ISDN) is down.
regards
06-28-2006 07:07 AM
Hi,
Have you had any joy with this? I am looking to do a similar config at work.
Graham
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide