(Optional) Configuring LDP to Automatically Trigger the Request in DoD Mode
A remote LDP session must be configured before LDP is configured to automatically send requests in Downstream-on-Demand (DoD) mode
Context
On a large-scale network with a great number of remote LDP peers deployed, DSLAMs that are low-end devices on the edge of the network cannot ensure network stability or prevent wasting resources. Run the remote-ip auto-dod-request command or the remote-peer auto-dod-request command to configure the function of triggering a request to a downstream node for a Label Mapping message associated with all remote LDP peers or a remote LDP peer with a specified LSR ID in DoD mode, which can save system resources.
To disable an LSR from automatically sending a request to a downstream node for a Label Mapping message associated with a specified LSR ID in DoD mode, you can run the remote-ip auto-dod-request block command.
A remote LDP session must be configured before the remote-peer auto-dod-request or remote-ip auto-dod-request command is run.
Run the longest-match command to configure LDP extension for inter-area LSPs before running the remote-peer auto-dod-request or remote-ip auto-dod-request command.
The mpls ldp advertisement dod command must be run to create an LDP session with a downstream node in DoD mode before you run the remote-peer auto-dod-request or remote-ip auto-dod-request command.
Procedure
- Run system-view
The system view is displayed.
- Run mpls ldp
The MPLS-LDP view is displayed.
- You can perform either of the following procedures to enable
a device to automatically send DoD requests for Label Mapping messages
to a specified or all downstream remote LDP peers.
To enable the device to automatically send DoD requests for Label Mapping messages to all downstream remote LDP peers, run remote-peer auto-dod-request
- You can perform the following procedures to enable the device to automatically send DoD requests for Label Mapping messages to a specified downstream remote LDP peer.
Run quit
The system view is displayed.
Run mpls ldp remote-peer remote-peer-name
A remote MPLS LDP peer is created, and the remote MPLS LDP peer view is displayed.
Run remote-ip ip-address
The IP address of the remote MPLS LDP peer is configured.
This IP address must be the LSR ID that the remote LDP peer uses to establish the existing remote LDP session.
Modifying or deleting the configured address of a remote peer also deletes the remote LDP session.
Run remote-ip auto-dod-request
The device is enabled to automatically send DoD requests for Label Mapping messages to a specified downstream remote LDP peer.
To disable the function of the remote-peer auto-dod-request command, run the remote-ip auto-dod-request block command.
- Run commit
The configurations are committed.