Operation Manual – DLDP
H3C S3610&S5510 Series Ethernet Switches
Chapter 1 DLDP Configuration
1-4
II. DLDP timers
Table 1-2
DLDP timers
DLDP timer
Description
Active timer
Determines the Interval to send Advertisement packets with
RSY tag, which defaults to 1 second.
When a device transits to the active DLDP link state, it
sends Advertisement packets with RSY tag according to this
timer. The maximum number of this type of packets that can
be sent successively is 5.
Advertisement timer
Determines the interval to send advertisement packets,
which defaults to 5 seconds.
Probe timer
Determines the interval to send Probe packets, which
defaults to 0.5 seconds. The maximum number of this type
of packets that can be sent successively is 10.
Echo timer
This timer is set to 10 seconds and is triggered when a
device transits to the Probe state or an enhanced detect is
launched. When the Echo waiting timer expires and no Echo
packet is received from a neighbor device, the link is set as a
unidirectional link and the device transits to the Disable
state. In this case, the device sends Disable packets,
prompts the user to shut down the port or shuts down the
port automatically (depending on the DLDP down mode
configured), and removes the corresponding neighbor
entries.
Entry timer
When a new neighbor joins, a neighbor entry is created and
the corresponding entry timer is triggered. And when a
DLDP packet is received, the device updates the
corresponding neighbor entry and the entry aging timer.
In the normal mode, if no packet is received from a neighbor
when the corresponding entry aging timer expires, DLDP
sends advertisement packets with RSY tags and removes
the neighbor entry.
In the enhanced mode, if no packet is received from a
neighbor when the Entry timer expires, DLDP triggers the
enhanced timer.
The setting of an Entry timer is three times that of the
Advertisement timer.
