R0106-HP MSR Router Series MPLS Command Reference(V7)

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Usage guidelines
When an LDP restart or an active/standby switchover occurs, LDP takes time to converge, and LDP
notifies IGP of the LDP-IGP synchronization status as follows.
• If a notification delay is not configured, LDP immediately notifies IGP of the current synchronization
states during convergence, and then updates the states after LDP convergence. This could impact
IGP processing.
• If a notification delay is configured, LDP notifies IGP of the synchronization states in bulk when one
of the following events occurs:
{ LDP recovers to the status before the restart or switchover.
{ The maximum delay timer expires.
Examples
# Configure a 300-second maximum delay for LDP to notify IGP of the LDP-IGP synchronization status
after an LDP restart or active/standby switchover occurs.
<Sysname> system-view
[Sysname] mpls ldp
[Sysname-ldp] igp sync delay on-restart 300
Related commands
• igp sync delay
• mpls ldp igp sync disable
• mpls ldp sync (IS-IS view)
• mpls ldp sync (OSPF view/OSPF area view)
import bgp
Use import bgp to enable LDP to redistribute BGP IPv4 unicast routes.
Use undo import bgp to restore the default.
Syntax
import bgp
undo import bgp
Default
LDP does not redistribute BGP IPv4 unicast routes.
Views
LDP view, LDP-VPN instance view
Predefined user roles
network-admin
Usage guidelines
By default, LDP automatically redistributes IGP routes and BGP routes that have been redistributed into
IGP. LDP cannot redistribute BGP routes if no IGP is configured or the BGP routes are not redistributed into
the IGP.
For example, on a carrier's carrier network where IGP is not configured between a PE of a Level 1 carrier
and a CE of a Level 2 carrier, LDP cannot redistribute BGP routes to assign labels to them. For this network