With HSRP, each interface must have an IP address that is separate from the HSRP group address. VRRP lets you share the Master's interface IP address.
I'm trying to understand this point in more detail.
- How are the individual routers sharing the master router's interface IP address? (AKA, how does it work at the ARP/Switch layers)
- Are the individual (non-master) routers simply not accessible via this IP address until the master fails (and a new master is elected)?
- Is there a benefit to this configuration other than simply conserving a few more IP addresses?
(so its clear, I'm not referring to the virtual address created by VRRP that becomes the end hosts's default-gateway. I'm talking about the physical router's physical interface address)