Alcatel-Lucent 7450 Configuration Manual page 174

Router Interface Commands
When the LDP synchronization timer expires, the link cost is restored and is re-advertised. IGP will
announce a new best next-hop and LDP will use it if the label binding for the neighbor's FEC is
available.
If the user changes the cost of an interface, the new value is advertised at the next flooding of link
attributes by IGP. However, if the LDP synchronization timer is still running, the new cost value will
only be advertised after the timer expired. Also, the new cost value will be advertised after the user
executes any of the following commands if the currently advertised cost is different:
If the user changes the value of the LDP synchronization timer parameter, the new value will take
effect at the next synchronization event. In other words, if the timer is still running, it will continue
using the previous value.
If parallel links exist to the same neighbor, then the bindings and services should remain UP as long
as there is one interface that is UP. However, the user configured LDP synchronization timer still
applies on the failed then restored interface. In this case, the router will only consider this interface
for forwarding after IGP re-advertized its actual cost value.
Note that the LDP Sync Timer State is not always synched across to the standby CPM, so after an
activity switch the timer state might not be same as it was on the previous active CPM.
The no form of this command disables IGP/LDP synchronization and deletes the configuration
Default no ldp-sync-timer
Parameters seconds — Specifies the time interval for the IGP-LDP synchronization timer in seconds.
load-balancing
Syntax load-balancing
Context config>router>if
Description This command enables the load-balancing context to configure interface per-flow load balancing
options that will apply to traffic entering this interface and egressing over a LAG/ECMP on system-
egress. This is a per interface setting. For load-balancing options that can also be enabled on the
system level, the options enabled on the interface level overwrite system level configurations.
Default
not applicable
Page 174
• tools>perform>router>isis>ldp-sync-exit
• tools>perform>router>ospf>ldp-sync-exit
• config>router>interface>no ldp-sync-timer
• config>router>ospf>disable-ldp-sync
• router>isis>disable-ldp-sync
Values 1 – 1800
7450 ESS Router Configuration Guide