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LAN routers in two datacentres 3 different subnets

Allan Pumphrey

I have two LAN routers in two datacentres with a private connection joining them. I am trying to communicate from one datacentre to the other but haven’t been able to get the rules/routes sorted. The details are as follows:

 (Datacentre 1) 172.16.5.X/24 (GW: 172.16.5.254)<-> 172.16.0.1/30 <-> (Datacentre 2) 172.16.0.2/30 <-> 172.16.6.X  (GW: 172.16.6.254)                                                                                                

 

I can ping 172.16.6.254 from Datacentre 1 and can ping 172.16.5.254 from Datacentre 2. I can tell by the ping duration that the traffic is moving between the datacentres but cannot ping 172.16.6.1 from Datacentre 1 or ping 172.16.5.1 from Datacentre 2. Configuration screen shots are as follows:

 

Datacentre 1

 

 

 

Datacentre 2

 

 

 

 

Any assistance would be appreciated. Thanks



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  • 0

    Hi there,

    to determine if everything is configured correctly, the configured Gateways would be helpful.

     

    What you could try to do is the following (without knowing the configured Gateways):

    Datacenter 1:

    Change your Interface Route to Gateway Route with the following Gateway:  172.16.0.1
    Disable MASQ in your Rule

    Datacenter 2:

    Change your Interface Route to Gateway Route with the following Gateway: 172.16.0.2
    Disable MASQ in your Rule
  • 0 in reply to Björn Ebner

    Hi,

     

    Thanks for the fast reply! Is this what you are looking for?

     

    Datacentre1

     

     

    Datacentre2 is the same as Datacentre 1 but with different ips/network

     

    Thanks

     

  • 0 in reply to Allan Pumphrey

    Do you have a policy route and a static route?

    Your static route you posted before wasn't that wrong.

     

    You should remove this policy route and make the changes mentioned above to your static route you posted before.

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  • +1 in reply to Björn Ebner

    OK, Got it! I have removed the Policy Route and "gateway" from my previous change to revert it back to the configuration when I posted this question. Then as you said... I removed the "Interface" from the route and populated the "Gateway" with the IP from Datacentre 2 172.16.0.1 and its now working. Thanks for so much... made my day!

     

    Datacentre 1's Route is shown below