
US.
Patent
Feb.
19,
2013
Sheet
2
of5
US
8,380,828
B1
50
(
START
)’
52
GENERATE
J
DISCOVERY
PROTOCOL
FRAME
PROPAGATE
J
FRAME
THROUGH
NEIWORK
IF
OFFENDING
5s
DHIICE
IS
FOUND
IN
THESWITtH'S
YES
DATABASE,
WAS
IT
FOUND
ON A
PORT THAT
DOES
NOT
HAVE
AN
‘
56
LLDP
OFFENDING
J
NEIGHBOR?
NHWORK
DEVICE
IS
LOEATED
62
PROFWPEAK’AELPEAT
’
A
38
£"J6h?6‘??32?iii
ms'?lllgsw“
IS
NO
LLDP
NEIGHBOR
BLOCK
TRAFFIC
60
(ENDf
FIG.
2
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