Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 322)

298 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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Configuring LDP on an interface
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The Multi-Service IronWare software the LDP label space ID has a default value of zero which
improves interoperability with routers from other vendors. Also, to provide backward compatibility
with Multi-Service IronWare software previous versions, a command lets the user change the LDP
label space ID value to 1 as described in
“Resetting LDP neighbors” .
Configuring LDP on an interface
To use LDP, a loopback address (with a 32-bit mask) must be configured on the LSR. The first
loopback address configured on the device is used in its LDP identifier. When the loopback address
used in the LDP identifier is removed, all LDP functions on the LSR is shut down. LDP sessions
between the LSR and its peers are terminated, and LDP-created tunnels are removed. When other
loopback interfaces are configured on the device, the lowest-numbered loopback address is then
used as a new LDP identifier. LDP sessions and tunnels are set up using this new LDP identifier.
To configure LDP on an interface, enter commands such as the following.
Brocade(config)# router mpls
Brocade(config-mpls)# mpls-interface e 1/2
Brocade(config-mpls)# ldp-enable
Syntax: [no] ldp-enable
NOTE
The user must enable LDP on the same set of interfaces that IGP routing protocols such as OSPF
and IS-IS are enabled.
Configuring an option of FEC type for auto-discovered VPLS peers
By default, Brocade devices use FEC 129 to send the VC label binding for auto-discovered VPLS
peers. There are mixed environments where VPLS static configured peers and auto-discovered
peers exist. In these environments, the following VPLS command allows the user to configure FEC
128 for all VPLS. Enter a command such as the following.
Brocade(config)# router mpls
Brocade(config-mpls)# ldp
Brocade(config-mpls-ldp)# fec-128-for-auto-discovered-peers
Syntax: [no] fec-128-for-auto-discovered-peers
The default value is FEC 129.
Using the [no] option returns a configuration that was previously changed from the default value
back to the default value.
NOTE
The user must reload the system for this command to take effect.