3com 8807 User Guide

The maximum hop count of loop detection is 32 by default.

When path vector mode is adopted for loop detection, it is also necessary to 
specify the maximum value of LSP path. In this way, when one of the following 
conditions is met, it is considered that a loop happens and the LSP establishment 
fails.

■

The record of this LSR already exists in the path vector recording table.

■

The path hop count exceeds this maximum value.

Perform the following configuration in the system view.

The maximum of the maximum hop count of path vector is 32 by default.

Perform the following configuration in VLAN interface view or Remote-peer view.

After accomplishing the configuration tasks mentioned previously, you can 
execute the display command in any view to view the running state of a single or 
all the static LSPs and thus to evaluate the effect of the configurations.

After finishing the configurations above, execute the display command in any 
view to view the MPLS statistics information or LSP information of all ports or a 
single VLAN interface. You can verify the effect of the configuration by checking 
the information on display.

Table 512   Set the maximum hop count in path vector mode

Set the maximum hop count in path vector 
mode 

mpls ldp path-vectors pv-number 

Return to the default maximum hop count in 
path vector mode 

Table 513   Configure LDP authentication mode (between every two routers)

Configure LDP authentication Mode 

mpls ldp password [ cipher | simple ] 
password 

Remove LDP authentication 

Table 514   Display the static LSP information

Display the static LSP information 

display mpls static-lsp [ include text | verbose ]