IGP shortcuts enable traffic to get forwarded along traffic engineered paths computed by RSVP using a modified SPF

Level 1 2 routers set attached bit in their Level 1 LSPs to indicate their reachability to the rest of the network. A

Level 1 2 routers set attached bit in their Level 1 LSPs to indicate their reachability to the rest of the network. A

An IS IS router can be configured as Level 1 2 which can form adjacencies and exchange routing information with both

This feature allows to advertise routes learnt via BGP into IS IS network or IS IS routes into BGP network. It also