![]() I dont know what ipsec implementation is under the hood, but if a liveness check reset where to happen - AND IKE process would use a new outgoing UDP source port per ike-gateway (when NAT-T is enabled), this would probably work as expected. If you cant ping the ip-addresses of lo0 interfaces of. i can able communicate with each other no issues. i have configured loopback interfaces on all three routers and have configured static routing between them to communicate. About Us Help Appreciation & Recognition Programs. This leads to NAT not being able to update its sessions, and not using a new outgoing IP on WAN2. Packet Tracer & Alternative Lab Solutions About/Help. My issue is, even though I played around with Liveness Check timers, and monitor-profile failover/recover, the IKE-process doesnt seem to be restarted ( it uses same source UDP port when trying to create IKE Initiatior request). Now finally IKE can reach remote gateway. IKE process doesnt seem to ever be reset, and to solve this I have to do two things: clear session table, and clear ike-sa. Now this is ofcourse blocked by ISP routers because they have RP-filter strict. I can see that packets leaving WAN2 now has the public IP of WAN1. Tunnel comes up, great success! I can see in session table that it is source-nat'ed. IKE-gateway, sourced from loopback, using fqdn as local-id. You can use a loopback interface to establish a. As a result, a loopback interface is useful for debugging tasks since its IP address can always be pinged if any other switch interface is up. This means: NAT works, on both interfaces. A loopback interface is a virtual interface that is always up and reachable as long as at least one of the IP interfaces on the switch is operational. It makes little sense to put a default route on the loopback interface, because the only place it can send packets to is the imaginary piece of wire. ![]() whatever you send to it is received on the interface. The only purpose of the loopback interface is to return the packets sent to it, i.e. In this case, i’m only use Packet Tracer to remotely access R1 from PC-A. Ensure that the SSH radio button is selected and then click OK to connect to the router. For example, the following should tests should be successful: From the command line on PC1, ping PC4. In addition, you should be able to ping the active interfaces on the routers. You should now be able to ping from any PC to any other PC on the network. Ping source 192.168.99.1 host 88.88.88.88Īnd ping will continue to work, and I can see in session table that it has updated its source-nat session. The loopback interface is a virtual interface. Open Tera Term and enter the Loopback 0 interface IP address of R1 in the Host: field of the Tera Term: New Connection window. Step 2: Test end-to-end connectivity across the network. I have setup two dynamic source-nat rules, based on both outside interfaces. I have one policy rule that allows everything from inside to outside zone. I want to create one tunnel to one remote site.īoth ISPs have RP-filter strict (setup in a lab) I have two ISPs with two different static IPs.
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