Configuring an LSP generation policy
LDP assigns labels to the routes that have been redistributed into LDP to generate LSPs. An LSP generation policy specifies which redistributed routes can be used by LDP to generate LSPs to control the number of LSPs, as follows:
Use all routes to establish LSPs.
Use the routes permitted by an IP prefix list to establish LSPs. For information about IP prefix list configuration, see Layer 3—IP Routing Configuration Guide.
Use only IPv4 host routes with a 32-bit mask to establish LSPs.
By default, LDP uses only IPv4 host routes with a 32-bit mask to establish LSPs. The other two methods can result in more LSPs than the default policy. To change the policy, make sure the system resources and bandwidth resources are sufficient.
To configure an LSP generation policy:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter LDP view or enter LDP-VPN instance view. |
| N/A |
3. Configure an IPv4 LSP generation policy. | lsp-trigger { all | prefix-list prefix-list-name } | By default, LDP uses only the redistributed IPv4 routes with a 32-bit mask to establish LSPs. |