Van Jacobson - compressed TCP protocol which improves the TCP/IP performance over low speed serial links.

VARP - VINES Address Resolution Protocol, used for finding the node Data Link Control address from the node IP address (Banyan).

VCI - Virtual Channel Identifier.

VGCS - Voice Group Call Service

ViVID MPOA - proprietary protocol of Newbridge which provides bridged LAN Emulation and routed LAN Emulation functionality.

VPI - Virtual Path Identifier

VRRP - Virtual Router Redundancy Protocol