3Com Switch 8800 Configuration Guide
Chapter 36 MPLS Basic Capability Configuration
36-8
III. 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.
z
The record of this LSR already exists in the path vector recording table.
z
The path hop count exceeds this maximum value.
Perform the following configuration in the system view.
Table 36-14
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
The maximum hop count defaults to 32.
36.3.6 Configuring LDP Authentication Mode Between Every Two Routers
Perform the following configuration in VLAN interface view or remote-peer view.
Table 36-15
Configure LDP authentication mode
Operation
Command
Configure LDP authentication Mode
mpls ldp password
[
cipher
|
simple
]
password
Remove LDP authentication
undo mpls ldp password
36.4 Displaying and Debugging MPLS
36.4.1 Displaying and Debugging MPLS
MPLS provides abundant display and debugging commands for monitoring LDP
session state, tunnel, all the LSPs and their states, and so on. These commands are
the powerful debugging and diagnosing tools.
I. 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.
