- Silver, 250 points or more
I am going to transfer 2 Cisco switches from two routers which are directly connected e.g. R1/R2 to other two routers e.g R3/R4.
These switches have connected servers which point to the VRRP IP and are in service.
I am trying to have the minimum downtime during the migration of the VRRP IP from R1/R2 to R3/R4.
So, the R3,R4 routes use IP from the same subnet pool as R1/R2. The servers will have see the same VRRP IP as default gateway.
First task is to shutdown the R1/R2 interfaces. Then, I will configure the same VRRP IP to the new R3/R4 routers.
I was wondering that since the new VRRP IP has a new MAC IP when the servers will update their ARP table with the new MAC IP of the VRRP?
I mean that since the servers will sent traffic all the time I can not expect to the servers MAC address entry to expire or sent an ARP broadcast (after 4h?).
If I ping the servers with source IP the VRRP of the R3/R4 routers will this force the servers to update their ARP table?
In this case I also do not have to clear the old MAC entry from the switches?
I do not have access to the servers and the solution to shut their interfaces and then to not shut is not feasilbe.
Please your advice...rating all the helpful answers and appreciate your help in advance!