The mpls te backup command specifies the CR-LSP backup mode.
The undo mpls te backup command disables the CR-LSP backup function.
By default, the hot-standby function and the best-effort path function are disabled on the tunnel.
mpls te backup hot-standby
mpls te backup ordinary
mpls te backup ordinary best-effort
mpls te backup hot-standby { { mode { revertive [ wtr interval ] | non-revertive } | wtr interval } | dynamic-bandwidth } *
undo mpls te backup hot-standby
undo mpls te backup ordinary
undo mpls te backup hot-standby { mode { revertive [ wtr ] | non-revertive } | dynamic-bandwidth } *
| Parameter | Description | Value |
|---|---|---|
| ordinary |
Ordinary backup. |
- |
| best-effort |
Set parameter for best-effort LSP. |
- |
| hot-standby |
Hot-standby backup. |
- |
| mode |
Configure revertive mode. |
- |
| revertive |
The revertive mode is revertive. |
- |
| wtr interval |
Specifies the Wait-to-Restore time in hot standby. |
The value is an integer ranging from 0 to 2592000, in seconds. By default, the value is 10. |
| non-revertive |
The revertive mode is non-revertive. |
- |
| dynamic-bandwidth |
Hot standby dynamic bandwidth. |
- |
Usage Scenario
To help enhance the reliability of a CR-LSP, setting up a backup CR-LSP to protect traffic on a primary CR-LSP in an end-to-end manner is recommended.
Precautions
Enabling tunnel backup automatically enables the route record function no matter whether the mpls te record-route command is run.
The mpls te backup ordinary command and the mpls te backup ordinary best-effort command cannot be configured simultaneously; otherwise, the last configuration overrides the previous one.