Solved: Reg:isp fail over

vasuramnet · ‎10-03-2007

Dear sir,

i have one 2821 router in that iam having 1mbps (british telecom)and one more is reliance(2mbps)now i want failover between B.T and reliance.

how can i configure the router.plz kindly give me the examples.

ankbhasi · ‎10-03-2007

Hi Srnivas,

Try this out and it should work

interface s0

ip address

ip nat outside

!

interface s1

ip address

ip nat outside

!

interface ethernet3

ip address

ip nat inside

!

ip route 0.0.0.0 0.0.0.0 s0 90

ip route 0.0.0.0 0.0.0.0 s1 100

!

ip nat inside source route-map ISP1-map interface s0

ip nat inside source route-map ISP2-map interface s1

!

route-map ISP11-map permit 10

match interface s0

!

route-map ISP12-map permit 10

match interface s1

HTH

Ankur

*Pls rate all helpfull post

View solution in original post

spremkumar · ‎10-03-2007

hi

are you talking about plain internet link or mpls circuit ?

if its internet link then you can have floating static routes which takes care of routing and dual nat statements to take care of your internet access.

regds

vasuramnet · ‎10-03-2007

Dear premkumar,

thanks for ur valuble reply and its nota mpls link its aplain internet link.Plz give me any examples sir that will greatfull to u

Regards

srinivas.d

ankbhasi · ‎10-03-2007

Hi Srnivas,

Try this out and it should work

interface s0

ip address

ip nat outside

!

interface s1

ip address

ip nat outside

!

interface ethernet3

ip address

ip nat inside

!

ip route 0.0.0.0 0.0.0.0 s0 90

ip route 0.0.0.0 0.0.0.0 s1 100

!

ip nat inside source route-map ISP1-map interface s0

ip nat inside source route-map ISP2-map interface s1

!

route-map ISP11-map permit 10

match interface s0

!

route-map ISP12-map permit 10

match interface s1

HTH

Ankur

*Pls rate all helpfull post