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Hot standby router protocol. 2 different routers will have 2 different physical addresses, but you can give both of them a shared virtual address. only 1 router will answer on the virtual address at a time, but one goes down the other will take over.
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If all routers on VLAN10 have the same HSRP priority which router will become the active router?
The highest IP address among the active interfaces will be used.
If we have 2 networks N1 N2 and 2 routersR1 R2 and we want to connect N1 with N2 through R1 and keep R2 as redundancy for R1. How can we apply same rules in R1 and R2 so if R1 goes downR2 takes place?
Look in to HSRP is you are using Cisco routers. I'm sure there are other router solutions out there. Each interface will need to be connected to the same vlan as the network it is connected to. For instance - R1 int. 1 and R2 int 1 would be on N1. R1 int2 and R2 int 2 would be on N2. There also might be a cool switch trick you could do that would monitor the interface - think spanning tree.... if it were to ever go down, then the other interface would come up. Many ways you can skin this cat.
