D-Link DXS-3600 Series Reference Manual page 753

DXS-3600 Series Layer 3 Managed 10Gigabit Ethernet Switch CLI Reference Guide
Usage Guideline
This command is used to configure the LDP session keep-alive hold-time. LDP maintains a keep-alive
hold timer for each peer session. If the keep-alive hold timer expires without receipt of an LDP PDU from
the peer, LDP terminates the LDP session. Each LSR sends keep-alive messages at regular intervals to
its LDP peers to keep the sessions active. The keep-alive interval is one third of the keep-alive hold-time.
Example
This example shows how to configure the keep-alive hold-time to 60 seconds.
Switch# configure terminal
Switch(config)# mpls ldp configuration
Switch(config-ldp)# keepalive-holdtime 60
Warning: The configuring will lead to LDP sessions restart.
Switch(config-ldp)#
67-12 label-retention-mode
This command is used to configure the label retention mode. Use the no form of this command to restore
the default value.
label-retention-mode {liberal | conservative}
no label-retention-mode
Parameters
liberal
conservative
Default
By default the label retention mode is configured as liberal.
Command Mode
LDP Configuration Mode.
Command Default Level
Level: 12.
Usage Guideline
If the label distribution method is Downstream-Unsolicited and the label retention mode is conservative,
once the LSR received label bindings from LSRs which are not its next hop for that FEC, it discards such
bindings. If the label retention mode is liberal, it maintains such bindings. It helps to speed up the setup of
LSP in case there is a change in the next hop.
Example
This example shows how to configure the label retention mode to conservative.
Switch# configure terminal
Switch(config)# mpls ldp configuration
Switch(config-ldp)# label-retention-mode conservative
Warning: The configuring will lead to LDP sessions restart.
Switch(config-ldp)#
Specifies the liberal label retention mode.
Specifies the conservative label retention mode.
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