H3C Technologies H3C S10500 Series Switches - Manual (Page 70)

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NOTE:
•
Disabling LDP on an interface terminates all LDP sessions on the interface. As a result, all LSPs using the
sessions are deleted.
• Usually, configuring the LDP LSR ID is not required, as it defaults to the MPLS LSR ID. In some
applications that use VPN instances (for example, MPLS L3VPN), however, you must 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 local LDP sessions. To establish a local LDP
session:
• Determine the LDP transport addresses of the two peers and ensure that the LDP transport addresses
are reachable to each other. This step is to establish the TCP connection.
• If many LDP sessions exist between the two LSRs or the CPU is occupied much, you must 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
CAUTION:
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 switch. Otherwise, the LDP sessions cannot be established.
Configuring remote LDP session parameters
LDP sessions established between remote LDP peers are remote LDP sessions. Remote LDP sessions are
mainly used in Martini MPLS L2VPN, and Martini VPLS. For more information about remote session
applications, see the chapters “MPLS L2VPN configuration,” and “VPLS configuration.”
To establish a remote LDP session, you must do the following:
• Determine the LDP transport addresses of the two peers and ensure that the LDP transport addresses
are reachable to each other. Do this to establish the TCP connection.
• If many LDP sessions exist between the two LSRs or the CPU is occupied much, you must adjust timers
to ensure the stability of the LDP sessions.
Follow these steps to configure remote LDP session parameters: