H3C S3600 Series Operation Manual page 6

Operation Manual – DLDP
H3C S3600 Series Ethernet Switches-Release 1510
Table 1-3 DLDP operating mode and neighbor entry aging
DLDP
operating
mode
Normal
mode
Enhanced
mode
IV. DLDP implementation
1) If the DLDP-enabled link is up, DLDP sends DLDP packets to the peer device, and
analyzes and processes the DLDP packets received from the peer device. DLDP
in different states sends different types of packets.
Table 1-4 Types of packets sent by DLDP
DLDP state
Active
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Probe
2) DLDP analyzes and processes received packets from the peer device as follows:
In authentication mode, DLDP authenticates the packets, and discards those
failing to pass the authentication.
DLDP processes the received DLDP packets.
DLDP detects
whether
neighbors exist
or not when
neighbor tables
are aging
No
Yes
Advertisement packets, including those with or without an RSY
tag
Advertisement packets
Probe packets
1-5
Chapter 1 DLDP Configuration
The entry aging timer
is enabled or not
during neighbor entry
aging
Yes (The neighbor
entry ages out after the
entry aging timer
expires)
Yes (The enhanced
timer is enabled after
the entry aging timer
expires)
Packet type
The enhanced
timer is enabled or
not when the entry
aging timer expires
No
Yes (When the
enhanced timer
expires, the state of
the local end is set to
unidirectional link,
and the neighbor
entry is aged out.)