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The Cisco ASA does not stop advertising the default route in the RIP processes

r.kuwahara
Level 1
Level 1

Hello,

I have the following scenario:

 

(R1) -- (Cisco ASA) -- (R2)

The router R1 is connected to the Cisco ASA inside interface;

The router R2 is connected to the Cisco ASA outside interface.

 

I have configured the Cisco ASA to use a default route using the R2 as the next hop and I enabled an IP SLA track to send ICMP packets to a public address (8.8.8.8). Besides that, I enabled the RIP protocol in the Cisco ASA as bellow information:

router rip
 network 10.0.0.0
 passive-interface outside
 default-information originate
 version 2
 no auto-summary

!

route outside 0.0.0.0 0.0.0.0 200.X.Y.Z 30 track 1

!

sla monitor 1
 type echo protocol ipIcmpEcho 8.8.8.8 interface outside
 frequency 30
sla monitor schedule 1 life forever start-time now

!
track 1 rtr 1 reachability

 

So, it is suppose to the Cisco ASA advertise a default-route to router R1 that is working properly, but when I have a problem in the ISP (traffic to the Internet after router R2), I suppose that the Cisco ASA should stop advertise the default route to the router R1, but it is not working. The RIP protocol is still advertising the default route to R1.


Does anybody knows how to stop this advertising?

 

Thank you!

1 Reply 1

nspasov
Cisco Employee
Cisco Employee

I believe you need to attach a route-map at the end of your default-information-originate statement. Something like this:

router rip
 network 10.0.0.0
 passive-interface outside
 default-information originate route-map default-route
 version 2
 no auto-summary
!
prefix-list default-prefix permit 200.X.Y.Z/xx
!
route-map default-route permit 10
  match ip address prefix default-prefix
!
route outside 0.0.0.0 0.0.0.0 200.X.Y.Z 30 track 1
!
sla monitor 1
 type echo protocol ipIcmpEcho 8.8.8.8 interface outside
 frequency 30
sla monitor schedule 1 life forever start-time now
!
track 1 rtr 1 reachability

 

Give it a try and let us know if this fixes it!

 

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