Forwarding table VC number 22 32 Forwarding table in interface northwest router: number Incoming interface Incoming VC# Outgoing interface Outgoing VC# 1 12 3 2 63 1 18 3 2 17 1 97 3 87 Routers maintain connection state information! Network Layer 4-14Network Layer 4-14 Forwarding table 12 22 32 1 2 3 VC number interface number Incoming interface Incoming VC # Outgoing interface Outgoing VC # 1 12 3 22 2 63 1 18 3 7 2 17 1 97 3 87 . . . . Forwarding table in northwest router: Routers maintain connection state information!