[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] [X] [Z] variable length subnet mask (VLSM) 2nd 3rd Vendor Client Classes box vendor symbols fields SinstNM creating 2nd 3rd 4th vendor symbols (DHCP) JumpStart support 2nd 3rd 4th 5th 6th vendor-supplied identifier (VID) verbose option (ping command) verifying router configurations version header field (IPv6) VID (vendor-supplied identifier) View Items button virtual circuits virtual interfaces. [See logical interfaces (IPv4)] virtual local area networks (VLANs) topologies VLANs (virtual local area networks) toplogies VLSM (variable length subnet mask) 2nd 3rd |