Independent control mode

Ordered control mode

Liberal label retention mode

Conservative label retention mode

Downstream on demand label distribution mode

Send a PathTear message towards router R6.

Send a PathTear message towards router R1.

Send a ResvTear message toward router R6.

Send a ResvTear message toward router R1.

Frame mode requires multiple sessions between peers.

The lower transport address initiates the session.

Established LDP sessions run over a TCP connection.

An LDP session is established immediately after Init messages are exchanged between peers.

An IGP route takes priority over a transport tunnel.

Both LDP and RSVP-TE based tunnels can be used.

MPLS tunnels can be used to resolve the prefixes learned via IGP.

Multiple MPLS tunnels can be installed in the FIB.

R4 (10.10.10.4) has established a link protection tunnel.

R6 (10.10.10.6) has established a link protection tunnel.

R2 (10.10.10.2) has established a node protection tunnel.

R1 (10.10.10.1) has not established a node protection tunnel.

Both the primary and secondary paths are explicitly defined.

The primary path is active and the secondary path is in hot standby.

The LSP defined will use the primary path and will signal the secondary path to become active if the primary path fails.

The LSP has the same source and destination for both primary and secondary paths.

Configure the T-LDP peers for tunneling.

Configure tunneled T-LDP sessions between PE routers.

Enable Idp-over-rsvp in the IGP configuration on the PEs and ABRs

Enable LSP stitching on the RSVP LSPs

It identifies the FEC.

It specifies the packet's header length

It identifies the origin of the packet.

It specifies the type of data contained in the packet

IGP-based LSPs are established solely from information contained in routing tables.

The constraint-based routed LSP is calculated at the ingress of the network, based on the router database and user defined constraints.

The constraint-based routed LSP is calculated at each hop of the LSP, based on the route table and user defined constraints.

IGP-based LSPs must use LDP signaling.

It is always a random 16-bit number.

It is always zero for per-interface label space.

It is always non-zero.

It is always zero for per-platform label space.

It is always non-zero for per-platform label space.