I'm trying to implement HSRP for redundancy between two Gateway Routers. The problem is currently there is no dynamic routing setup for testing purposes. So there are only static routes in the gateway. That causes a problem for me if I give a new virtual ip to the main Gateway since all my traffic is forwarded to the current ip address. My question is can I use the same ip address that is currently used for my primary gateway as my virtual ip?
But the virtual IP wont be triggered until the current gateway goes down.. so how will the traffic flow normally since the traffic is currently pointing to the current IP configured on the interface. If I change the interface IP the traffic would only be flowing to the virtual IP which doesnt come into place until the Router goes down or does it?
If you remove the IP address from the physical interface and assign this IP address to the HSRP Virtual IP, traffic towards the 'gateway' will be momentarily disrupted while you making the changes. Therefore, I suggest making these changes during a maintenance window.
I'm not sure what you mean by this statement
"virtual IP wont be triggered until the current gateway goes down."
The Virtual IP will be active as soon as you remove the IP from the physical interface, assign a new IP on this physical interface, then relocate the IP from the physical interface to the HSRP Virtual IP.
oh so you're saying I should simply set the current gateway IP as the virtual IP and give a different IP to the physical interface (currently the default gateway address) and still the traffic would be routed to the virtual IP and not the IP of the physical interface? If this works then thats great. Please confirm that I understand correctly. and thanks a billion!!
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