Precautions During Dldp Configuration - H3C S3600 Series Operation Manual

Operation Manual – DLDP
H3C S3600 Series Ethernet Switches-Release 1510
Table 1-5 Process received DLDP packets
Packet type
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packet
Flush packet
Probe packet
Echo packet
3) If no echo packet is received from the neighbor, DLDP performs the following
processing:
Table 1-6 Processing procedure when no echo packet is received from the neighbor
No echo packet received
from the neighbor
In normal mode, no echo
packet is received when the
echo waiting timer expires.
In enhanced mode, no echo
packet is received when the
enhanced timer expires

1.1.2 Precautions during DLDP Configuration

DLDP works only when the link is up.
Processing procedure
If this neighbor entry does not exist on the
local device, DLDP creates the neighbor entry,
Extracts
enables the entry aging timer, and switches to
neighbor
the probe state.
information
If the neighbor entry already exists on the local
device, DLDP updates the entry aging timer.
Deletes the neighbor entry from the local device
Sends echo Creates the neighbor entry if this neighbor
packets entry does not exist on the local device.
containing both
neighbor and its
If the neighbor entry already exists on the local
own information
device, updates the entry aging timer.
to the peer
No Discards this echo packet
Checks
Checks
whether
whether
neighbor
the local
information
device is
in
Yes
in the
packet
probe
the
state
as that on
the
device
DLDP switches to the disable state, outputs log and
tracking information, and sends flush packets.
Depending on the user-defined DLDP down mode,
DLDP disables the local port automatically or
prompts you to disable the port manually. DLDP
sends an RSY message and deletes the neighbor
entry.
1-6
Chapter 1 DLDP Configuration
No Discards this echo packet
Sets the neighbor flag bit
to bidirectional link
If all neighbors are in the
the
bidirectional link state,
is
Yes
DLDP switches from the
same
probe
advertisement state, and
local
sets the echo waiting
timer to 0.
Processing procedure
state to the