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DES-7200 Configuration Guide Chapter 1 MPLS Configuration
1-19
The default hold time of Hello packets is 15s. You can freely set the interval that ranges from 1 to
65535 seconds in the interface mode. The value 65535 indicates an indefinite hold time.
Command Function
DES-7200(config-if-type ID)# mpls ldp
hello-holdtime seconds
Set the hold time of Hello packets.
DES-7200(config-if-type ID)# no mpls
ldp hello-holdtime
Restore the default hold time of Hello packets.
The default hold time of Hello packets in the extended LDP discovery mechanism is 45s. You
can run the discovery target-hello holdtime command to modify this value.
Command Function
DES-7200(config-mpls-router)#
discovery target-hello holdtime
seconds
Set the hold time of Hello packets in the extended
LDP discovery mechanism.
DES-7200(config-mpls-router)# no
discovery target-hello holdtime
Restore the default hold time of Hello packets in
the extended LDP discovery mechanism.
Configuring the Hold Time of Keepalive Packets
After an LDP peer is detected by periodically sending Hello packets and an LDP session is set
up in TCP mode, the local LDP device retains the peer for a period of time although no Keepalive
packet is received from the peer. The local LDP device considers that the peer expires and
voluntarily terminate the LDP session after this period. This period of time is called the hold time
of Keepalive packets. The default hold time of Keepalive packets for the session set up in the
basic discovery mechanism is 45s and that for the session set up in the extended discovery
mechanism is 180s. You can freely set the value at the range of 15 to 65535. The interval for
sending Keepalive packets is one third of the hold time of Keepalive packets.
Command Function
DES-7200(config-if-type ID)# mpls ldp
keepalive–holdtime seconds
In the interface mode, set the hold time of
Keepalive packets for the session set up in the
basic discovery mechanism.
DES-7200(config-if-type ID)# no mpls
ldp keepalive–holdtime
Restore the default hold time of Keepalive
packets for the session set up in the basic
discovery mechanism.