(Optional) Configuring an LDP Transport Address
Context
LDP sessions are established based on TCP connections. Before two LSRs establish an LDP session, they need to check the LDP transport address of each other, and then establish a TCP connection.
Procedure
- Run system-view
The system view is displayed.
- Run interface interface-type interface-number
The view of the interface on which the LDP session is to be set up is displayed.
- On an Ethernet interface, run undo portswitch
The interface is switched to Layer 3 mode.
By default, an Ethernet interface works in Layer 2 mode.
The mode switching function takes effect when the interface only has attribute configurations (for example, shutdown and description configurations). Alternatively, if configuration information supported by both Layer 2 and Layer 3 interfaces exists (for example, mode lacp and lacp system-id configurations), no configuration that is not supported after the working mode of the interface is switched can exist. If unsupported configurations exist on the interface, delete the configurations first and then run the undo portswitch command.
If many Ethernet interfaces need to be switched to Layer 3 mode, run the undo portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10> command in the system view to switch these interfaces to Layer 3 mode in batches.
- Run mpls ldp transport-address { interface-type interface-number | interface }
An LDP transport address is specified.
The default transport address for a node on a public network is the LSR ID of the node, and the default transport address for a node on a private network is the primary IP address of an interface on the node.
If LDP sessions are to be established over multiple links connecting two LSRs, LDP-enabled interfaces on either LSR must use the default transport address or the same transport address. If multiple transport addresses are configured on an LSR, only one transport address can be used to establish only one LDP session.
Changing an LDP transport address interrupts an LDP session. Exercise caution when running this command.
- Run commit
The configuration is committed.