The mpls rsvp-te hello command enables the RSVP Hello extension function globally or on an interface.
The undo mpls rsvp-te hello command disables the RSVP Hello extension function globally or on an interface.
By default, the RSVP Hello extension function is disabled.
MPLS view, VLANIF interface view, GE interface view, XGE interface view, MultiGE interface view, 25GE interface view, 40GE interface view, 100GE interface view, Eth-trunk interface view
Usage Scenario
The RSVP Hello extension mechanism provides fast detection on the reachability between RSVP nodes. The function increases network costs. Therefore, you need to determine whether to enable this function based on network requirements.
Prerequisites
RSVP-TE has been enabled by running the mpls rsvp-te command.
Precautions
The undo mpls rsvp-te hello command in the MPLS view disables the Hello function from all interfaces and disables GR on the local node.
You can run the mpls rsvp-te hello command in the MPLS view to enable the Hello function globally. After that, you can run the mpls rsvp-te hello command in the interface view to enable the Hello function on an interface.
The undo mpls rsvp-te hello command in the interface view is used to disable the Hello function on the interface. The undo mpls rsvp-te hello command in the MPLS view is used to disable the Hello function globally.
# Enable the RSVP Hello extension function globally.
<HUAWEI> system-view [HUAWEI] mpls [HUAWEI-mpls] mpls te [HUAWEI-mpls] mpls rsvp-te [HUAWEI-mpls] mpls rsvp-te hello
# Enable the RSVP Hello extension function on interface VLANIF100.
<HUAWEI> system-view [HUAWEI] interface vlanif 100 [HUAWEI-Vlanif100] mpls [HUAWEI-Vlanif100] mpls te [HUAWEI-Vlanif100] mpls rsvp-te [HUAWEI-Vlanif100] mpls rsvp-te hello
<HUAWEI> system-view [HUAWEI] interface gigabitethernet 0/0/1 [HUAWEI-GigabitEthernet0/0/1] undo portswitch [HUAWEI-GigabitEthernet0/0/1] mpls [HUAWEI-GigabitEthernet0/0/1] mpls te [HUAWEI-GigabitEthernet0/0/1] mpls rsvp-te [HUAWEI-GigabitEthernet0/0/1] mpls rsvp-te hello