3Com S7902E Command Reference Manual - page 1564
1-32
[Sysname] mpls ldp vpn-instance vpn1
[Sysname-mpls-ldp-vpn-instance-vpn1] loop-detect
lsp-trigger
Syntax
lsp-trigger
{
all
|
ip-prefix
prefix-name
}
undo lsp-trigger
{
all
|
ip-prefix
prefix-name
}
View
MPLS view
Default Level
2: System level
Parameters
all
: Specifies all FECs, that is, all static routes and IGP routes.
prefix-name
: Name of the IP address prefix list, a string of 1 to 19 characters.
Description
Use the
lsp-trigger
command to configure the LSP establishment triggering policy.
Use the
undo lsp-trigger
command to restore the default.
By default, only loopback addresses with 32-bit masks can trigger LDP to establish LSPs.
Note that:
z
With the
all
keyword specified in the
lsp-trigger
command, all static and IGP routes can trigger
LDP to establish LSPs.
z
With the
ip-prefix
prefix-name
keyword and argument combination specified in the
lsp-trigger
command, only static and IGP routes permitted by the IP address prefix list can trigger LDP to
establish LSPs.
z
An IP address prefix list affects only static routes and IGP routes.
z
For an LSP to be established, an exactly matching routing entry must exist on the LSR. With
loopback addresses using 32-bit masks, only exactly matching host routing entries can trigger LDP
to establish LSPs.
z
For information about IP address prefix list, refer to
Routing Policy Configuration
in the
IP Routing
Volume
.
Examples
# Configure LDP to allow all static and IGP routes to trigger LSP establishment.
[Sysname] mpls
[Sysname-mpls] lsp-trigger all