H3C Technologies H3C S7500E Series Switches - Manual (Page 57)

2-15
z
Currently, only VLAN-interface supports LDP capability.
z
Disabling LDP on an interface terminates all LDP sessions on the interface. As a result, all LSPs
using the sessions will be deleted.
z
Usually, you do not need to configure the LDP LSR ID but use the default, which is the MPLS LSR
ID. In some VPN applications (for example, MPLS L3VPN applications), however, you need to
ensure that different LDP instances have different LDP LSR IDs if the address spaces overlap.
Otherwise, the TCP connections cannot be established normally.
Configuring Local LDP Session Parameters
LDP sessions established between local LDP peers are referred to as local LDP sessions. To establish
a local LDP session:
z
Determine the LDP transport addresses of the two peers and make sure that the LDP transport
addresses are reachable to each other. This is to establish the TCP connection.
z
If there are a many LDP sessions between the two LSRs or the CPU is occupied much, you need
to adjust timers to ensure the stability of the LDP sessions.
Follow these steps to configure local LDP session parameters:
To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Set the link Hello timer mpls ldp timer hello-hold value
Optional
15 seconds by default
Set the link Keepalive timer
mpls ldp timer keepalive-hold
value
Optional
45 seconds by default
Configure the LDP transport
address
mpls ldp transport-address
{ ip-address | interface }
Optional
MPLS LSR ID of the LSR by
default
If you configure an LDP transport address by specifying an IP address, the specified IP address must
be the IP address of an interface on the device. Otherwise, the LDP sessions cannot be established.