loop-detect
Use loop-detect to enable loop detection.
Use undo loop-detect to disable loop detection.
Syntax
loop-detect
undo loop-detect
Default
Loop detection is disabled.
Views
LDP view
LDP-VPN instance view
Predefined user roles
network-admin
Usage guidelines
This command enables LDP to detect and terminate LSP loops. LDP uses hop count (see "maxhops") and path vector (see "pv-limit") for loop detection.
Use LDP loop detection only on networks with devices that do not support TTL mechanism such as ATM switches. Do not use LDP loop detection on other networks because it only results in extra LDP overhead.
The configuration of this command takes effect only on new LDP sessions. To apply the configuration to existing LDP sessions, you must reset the LDP sessions by using the reset mpls ldp command.
Examples
# Enable LDP loop detection for the public network.
<Sysname> system-view [Sysname] mpls ldp [Sysname-ldp] loop-detect
Related commands
display mpls ldp parameter
maxhops
pv-limit