Why need VRRP when VDX is enabled VCS?

[mtc4]

The VCS is Virtual Cluster Switching. Is the mean multi-chassis together one logical device? Why need VRRP when VDX is enabled VCS?

[mtc4]

Thank you,  Yulia,  Mick

[Yulia_Abitbul]

From L2 (switching) perspective all switches in the cluster act like one one logical device,

From L3 (routing) perspective each switch in the cluster act as separate device

[Mick_Day · Accepted solution]

VRRP is still required in VCS to provide a redundant IP gateway for attached devices.  For instance a server will be dual attached to two members of the VCS fabric and VRRP will provide a redundant  next hop gateway for the server, so in the event of a single switch failure the next hop will still be available.

I would suggest that the enhanced version of VRRPe should be used as this offer several advantages over standard VRRP.

VRRP/VRRPe are documented in the L3 guide for NOS

https://documentation.extremenetworks.com/networkos/SW/70x/53-1004366-02_L3RoutingNetworkOS_7.0.1_CG...