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Beginner

Remote Site-2 ISP-Redundant IPSEC Tunnel - Failover Fail - SA Up

 

Remote Site Dual ISP to HQ.pngRemote Site - to HQ - Redundant ISP

Hello,

I have am having an issue with a remote site redundant IPSEC tunnel config. When the remote site is on the primary IPSEC tunnel, the traffic from Host A to Host B is successful. When the primary link fails, the second tunnel can be established but host to host communication fails. I should mention that when I initiate the fail over at the remote site by pulling the plug, I have to run packet tracer to get the tunnel to come over the backup ISP. The tunnel is created and the SA is active however the host traffic does not get reassigned. I am using an SLA and a track to test reach ability and remove the static route. The remote host's DG is the inside interface of the remote fw. Could anyone shine some light on what I may be missing. Here is the config and I appreciate any help.

Thanks,

 

 

HQ Config

crypto map map-outside 100 match address to-remote-site-interesting traffic
crypto map map-outside 100 set peer 8.8.8.8 9.9.9.9
crypto map map-outside 100 set ikev1 transform-set vpn-l2l

tunnel-group 8.8.8.8 type ipsec-l2l
tunnel-group 8.8.8.8 ipsec-attributes
ikev1 pre-shared-key *****

tunnel-group 9.9.9.9 type ipsec-l2l
tunnel-group 9.9.9.9 ipsec-attributes
ikev1 pre-shared-key *****

nat (inside,outside) source static hostA hostA destination static hostB hostB

route outside 10.1.1.0 255.255.255.0 11.11.11.1 1

 

 


Remote Config

Interface Name Security
GigabitEthernet1/1 OUTSIDE 0
GigabitEthernet1/2 INSIDE 100
GigabitEthernet1/4 OUTSIDE2 0

GigabitEthernet1/1 8.8.8.8
GigabitEthernet1/2 10.1.1.1
GigabitEthernet1/3 unassigned
GigabitEthernet1/4 9.9.9.9

crypto map CMAP 1 match address to-HQ-site-interesting traffic
crypto map CMAP 1 set peer 11.11.11.11
crypto map CMAP 1 set ikev1 transform-set vpn-l2l
crypto map CMAP interface OUTSIDE
crypto map CMAP interface OUTSIDE2

crypto ikev1 enable OUTSIDE
crypto ikev1 enable OUTSIDE2

tunnel-group 11.11.11.11 type ipsec-l2l
tunnel-group 11.11.11.11 ipsec-attributes
ikev1 pre-shared-key *****

sla monitor 123
type echo protocol ipIcmpEcho 4.4.4.4 interface OUTSIDE
num-packets 3
frequency 10
sla monitor schedule 123 life forever start-time now

track 1 rtr 123 reachability

route OUTSIDE 0.0.0.0 0.0.0.0 8.8.8.1 1 track 1
route OUTSIDE2 0.0.0.0 0.0.0.0 9.9.9.1 254

 

 

-Nathan

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