VRRP for IPv6, also called VRRP6, is a fault-tolerant protocol functioning as an extension to the VRRP protocol. VRRP6 groups multiple routers into one virtual router. If a next hop router of a host fails, VRRP6 can switch services to another router using a certain mechanism. This ensures coherence and reliability of communication.
Table 1 compares VRRP6 and VRRP4.
Function |
VRRP for IPv4 |
VRRP for IPv6 |
|---|---|---|
Redundancy |
Supported |
Supported |
Load sharing mode |
Supported |
Supported |
Authentication |
Supported |
Not supported |
Enabling the ping to a virtual IP address |
Supported |
Supported |
Smooth switching |
Supported |
Supported |
mVRRP group |
Supported |
Supported |
Tracking the interface status |
Supported |
Supported |
Association between VRRP and BFD |
Supported |
Supported NOTE:
VRRP6 can associate with BFD but not peer BFD. |
Association between VRRP and routing |
Supported |
Not supported |
Association between VRRP and NQA |
Supported |
Not supported |
Enabling the backup device to forward traffic |
Supported |
Not supported |