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RAMU CH
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ISP redundancy issue

We have two internet link in a Router.

When one link fails automatically second link also getting down.

We have deployed IPSLA to track the interface..

Wil share the config shortly

Regards
Ram
RoutersNetwork ArchitectureDisaster Recovery

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RAMU CH

8/22/2022 - Mon
Miftaul H

Do you use Routing protocol on the router or use static default routes pointing to ISP next-hop.

Which router are you using to connect to ISP.

If it is Cisco, Floating static route with IPSLA can work out here.
R1(config)# ip route 0.0.0.0 0.0.0.0 1.1.1.1 track 1
R1(config)# ip route 0.0.0.0 0.0.0.0 2.2.2.2 10
IPSLA commands varies with CISCO Router IOS version. We can give you exact config as we know about your router IOS.

In SonicWall, you need to go to Network - > FailOver and load balancing.  You can set Failover type here.
RAMU CH

ASKER
Regret that not shared needful details:

Here are the details :

Device is Cisco

Model : 2800 series

version 15.0

Scenario :


         ISP1                    ISP2
                               
                \                  /
              cisco 2800 router
                       |
                    LAN




On Cisco 2800 series Router

Primary ISP details  :

Interface :  GigabitEthernet0/0
Ip address :  10.224.47.33

Secondary ISP details :

Interface :  GigabitEthernet0/0
Ip address :  10.224.47.33


About Routes are in the attached config fie.


My requirement is simple :

If primary ip fails , second isp should take care and onc eprimary comes back then traffic shouls pass over Primary ISP


Attached config file and SH version output

Regards
Ram
changed-Router-cofig.log
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Miftaul H

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RAMU CH

ASKER
Thanks fot the solution

 but it makes ISP as active /standby

 but in my scenario ,

ISP links  should be Active/Active

Regards
Ramu
Your help has saved me hundreds of hours of internet surfing.
fblack61
Miftaul H

Proper load sharing doesnt smartly work using static route, it works some sort using ip cef. If our intention is to keep both the links active, we could keep the above default routes. And use Policy Based Routing to route some interesting traffic over the second link.
Bgp could do that but thats not feasible here.
RAMU CH

ASKER
Tks