3Com 4510G, Руководство по настройке

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4-6
When a device transits from a DLDP state other than Inactive state or Disable state to Initial state, it
sends Flush packets.
2) A received DLDP packet is processed as follows.
z
In any of the three authentication modes, the packet is dropped if it fails to pass the authentication.
z
The packet is dropped if the setting of the interval for sending Advertisement packets it carries
conflicts with the corresponding local setting.
z
Other processes.
Table 4-5 Procedures for processing different types of DLDP packets
Packet type Processing procedure
If the corresponding neighbor entry does not exist,
creates the neighbor entry, triggers the Entry timer, and
transits to Probe state.
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packet with RSY
tag Retrieving the
neighbor
information.
If the corresponding neighbor entry already exists, resets
the Entry timer and transits to Probe state.
If the corresponding neighbor entry does not exist,
creates the neighbor entry, triggers the Entry timer, and
transits to Probe state.
Normal
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packet
Retrieves the
neighbor
information.
If the corresponding neighbor entry already exists, resets
the Entry timer.
If yes, no process is performed.
Flush packet
Determines
whether or not the
local port is in
Disable state.
If not, removes the corresponding neighbor entry (if any).
If the corresponding neighbor entry does not exist,
creates the neighbor entry, transits to Probe state, and
returns Echo packets.
Probe packet
Retrieves the
neighbor
information.
If the corresponding neighbor entry already exists, resets
the Entry timer and returns Echo packets.
If the corresponding neighbor entry does not exist,
creates the neighbor entry, triggers the Entry timer, and
transits to Probe state.
If the neighbor information it carries
conflicts with the corresponding locally
maintained neighbor entry, drops the
packet.
Echo packet
Retrieves the
neighbor
information.
The
correspondi
ng neighbor
entry
already
exists
Otherwise, sets the flag of the neighbor
as two-way connected. In addition, if the
flags of all the neighbors are two-way
connected, the device transits from Probe
state to Advertisement state and disables
the Echo timer.
If yes, no process is performed.
Disable packet
Check to see if the
local port is in
Disable state.
If not, the local port transits to Disable state.