Common Configuration Tasks
Page 264 7210 SAS M, T, X, R6, Mxp MPLS Configura-
tion Guide
LDP Signaling and Services 
When LDP is enabled, targeted sessions can be established to create remote adjacencies with 
nodes that are not directly connected. When service distribution paths (SDPs) are configured, 
extended discovery mechanisms enable LDP to send periodic targeted hello messages to the SDP’s 
far-end point. The exchange of LDP hellos trigger session establishment. The SDP’s signaling 
default enables tldp. The service SDP uses the targeted-session parameters configured in the 
config>router>ldp>targeted-session
 
context. 
The 7210 SAS M supports only Targeted LDP (TLDP). 
The following example displays the command syntax usage to configure enable LDP on an MPLS 
SDP:
CLI Syntax: config>service>sdp#
signaling {off|tldp}
The following displays an example of an SDP configuration showing the signaling default 
tldp
 
enabled.
A:ALA-1>config>service>sdp# info detail
----------------------------------------------
            description "MPLS: to-99"
            far-end 10.10.10.99
            lsp A_D_1
            signaling tldp
            path-mtu 4462
            keep-alive
                hello-time 10
                hold-down-time 10
                max-drop-count 3
                timeout 5
                no message-length
                no shutdown
            exit
            no shutdown
----------------------------------------------
A:ALA-1>config>service>sdp#