Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 379)

Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide 355
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MPLS LDP-IGP synchronization
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When hold down time is un-configured, the router stops the hold-down-timer on every interface that
has hold-down-timer running at the time as if there is no hold down time configured. As a result,
these interfaces have infinite hold down time. For those not-in-sync interfaces with hold-down time
already expired, IGP continues to advertise Normal metric.
By default, hold-down time is disabled. IGP waits until LDP gives an In Sync indication for the link
before it advertised the normal metric.
By default, ldp-sync hold-down is disabled.To enable the ldp-sync hold-down timer with IS-IS, enter
the following commands.
Brocade(conf)# router isis
Brocade(config-isis-router)# address-family ipv4 unicast
Brocade(config-isis-router-router-ipv4u)# metric-style wide
Brocade(config-isis-router-router-ipv4u)# ldp-sync
Brocade(config-isis-router-router-ipv4u)# ldp-sync hold-down 100
By default, ldp-sync hold-down is disabled.To enable the ldp-sync hold-down timer with OSPF, enter
the following commands.
Brocade(conf)# router ospf
Brocade(conf-ospf-router)# ldp-sync
Brocade(conf-ospf-router)# ldp-sync hold-down 100
Syntax: ldp-sync hold-down seconds
The seconds parameter range is 1 to 65535 seconds.
Enabling LDP sync on an interface
Use the isis ldp-sync command under the conf-if-e-1/1 policy to enable the LDP sync feature on a
specific IS-IS interface. This overrides the global setting from the MPLS LDP-sync feature. By
default, the isis ldp-sync is not enabled individually on an interface.
Brocade(conf)# interface e 1/1
Brocade(conf-if-e-1/1)# ip router isis
Brocade(conf-if-e-1/1)# isis ldp-sync enable
Syntax: isis ldp-sync [enable | disable]
Use the ip ospf ldp-sync command under the conf-if-e-1/1 policy to enable the LDP sync feature
individually on an OSPF interface. By default, the ip ospf ldp-sync is not enabled individually on an
OSPF interface.
Brocade(conf)# interface e 1/1
Brocade(conf-if-e-1/1)# ip ospf area 0.0.0.0
Brocade(conf-if-e-1/1)# ip ospf ldp-sync enable
Syntax: ip ospf ldp-sync [enable | disable]