O'Reilly logo

MPLS Fundamentals by Luc De Ghein - CCIE No. 1897

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Forwarding of Labeled Packets

This section looks at how labeled packets are forwarded in MPLS networks, how forwarding labeled packets is different from forwarding IP packets, how labeled packets are load-balanced, and what a label switching router (LSR) does with a packet with an unknown label.

Label Operation

The possible label operations are swap, push, and pop. Look at Figure 3-1 to see the possible operations on labels.

Figure 3-1. Operations on Labels

By looking at the top label of the received labeled packet and the corresponding entry in the LFIB, the LSR knows how to forward the packet. The LSR determines what label operation needs ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required