3Com Switch 8800 Family Configuration Guide

Displaying and Debugging MPLS Basic Capability 521
The maximum hop count of loop detection is 32 by default.
Setting the maximum hop count in path vector mode
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.
Configuring LDP
Authentication Mode
Between Every Two
Routers
Perform the following configuration in VLAN interface view or Remote-peer view.
Displaying and
Debugging MPLS Basic
Capability
Displaying and
Debugging MPLS
Displaying static LSPs
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.
Displaying the MPLS statistics information or LSP information of all ports
or a single VLAN interface
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.
Tab le 512 Set the maximum hop count in path vector mode
Operation Command
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
undo mpls ldp path-vectors
Tab le 513 Configure LDP authentication mode (between every two routers)
Operation Command
Configure LDP authentication Mode
mpls ldp password [ cipher | simple ]
password
Remove LDP authentication undo mpls ldp password
Tab le 514 Display the static LSP information
Operation Command
Display the static LSP information display mpls static-lsp [ include text | verbose ]