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4. The master node transmits a Ring-Down-Flush-FDB message
In response to the Link-Down message, the master node transmits a Ring-Down-Flush-FDB
message out both its primary and secondary ports. The message has to go out both ports to
make sure it reaches the nodes on both sides of the broken link. The master node also
unblocks its secondary port for vlan2, flushes its forwarding database, sends a trap, and
changes the EPSR state to Failed.
EPSR Port1 Tx:
00bb0100 00541ee9 00000000 0000cd28 0619990b 00400107 03e80000 00000000
cd280619 00000000 02000000
EPSR Port1 Tx:
-----------------------------------------------------------------------
-----------------------------------------------------------------------
EPSR Port2 Tx:
00bb0100 00541ee9 00000000 0000cd28 0619990b 00400107 03e80000 00000000
cd280619 00000000 02000000
EPSR Port2 Tx:
-----------------------------------------------------------------------
-----------------------------------------------------------------------
Unblock EPSR:test port:2 VLAN:2
Flush FDB EPSR: test
EPSR INFO: Send trap EPSR:test oldState:COMPLETE newState:FAILED
EPSR test oldState:COMPLETE newState:FAILED
5. The master node receives a second Link-Down message
The master node receives a Link-Down message from the transit node on the other side of
the broken link. This message arrived after a delay because the ring ports are 1000M ports
(see
response to this message, because it already responded to the broken link.
Manager x900-48-A>
EPSR Port1 Rx:
00bb0100 00542484 00000000 0000cd24 024f990b 00400108 03e80000 00000000
cd24024f 00000000 04000000
EPSR Port1 Rx:
-----------------------------------------------------------------------
-----------------------------------------------------------------------
Page 49 | AlliedWare™ OS How To Note: EPSR
00e02b00 00040000 cd280619 8100e3e8 005caaaa 0300e02b
TYPE = RING-DOWN-FLUSH-FDB
CTRL VLAN = 1000
HELLO TIME = 0
HELLO SEQ = 0
00e02b00 00040000 cd280619 8100e3e8 005caaaa 0300e02b
TYPE = RING-DOWN-FLUSH-FDB
CTRL VLAN = 1000
HELLO TIME = 0
HELLO SEQ = 0
nodeType:MASTER
"Ports and Recovery Times" on page
00e02b00 00040000 cd24024f 8100e3e8 005caaaa 0300e02b
TYPE = LINK-DOWN
CTRL VLAN = 1000
HELLO TIME = 0
HELLO SEQ = 0
FAIL TIME = 0
FAIL TIME = 0
vid: 2
30). The master node does not take any action in
FAIL TIME = 0
STATE = FAILED
SYSTEM = 00-00-cd-28-06-19
STATE = FAILED
SYSTEM = 00-00-cd-28-06-19
STATE = LINK-DOWN
SYSTEM = 00-00-cd-24-02-4f
Debugging
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