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Allied Telesis AT 9924SP AT-9924SP-30 AT-9924SP-30 Software Manual page 42

Configure epsr (ethernet protection switching ring) to protect a ring from loops

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Transit Node (Node B) Debug Output
The following debugging shows the same events as the previous section, but on the transit
node instead of the master node. It starts with the ring established and in a state of
Complete.
1. The transit node receives Health messages
The transit node receives Health messages on port 1, because that port is connected to the
master node's primary port. Note that in the System field, this output shows the MAC
address of the source of the message—the master node in this case.
This is the packet shown in step
EPSR Port1 Rx:
EPSR Port1 Rx:
-----------------------------------------------------------------------
-----------------------------------------------------------------------
Manager 9924-B>
EPSR Port1 Rx:
EPSR Port1 Rx:
-----------------------------------------------------------------------
-----------------------------------------------------------------------
.
.
.
Manager 9924-B>
EPSR Port1 Rx:
EPSR Port1 Rx:
-----------------------------------------------------------------------
-----------------------------------------------------------------------
Page 42 | AlliedWare™ OS How To Note: EPSR
00e02b00 00040000 cd280619 8100e3e8 005caaaa 0300e02b
00bb0100 00541f2a 00000000 0000cd28 0619990b 00400105 03e80000
00000000 cd280619 00010002 010000be
TYPE = HEALTH
CTRL VLAN = 1000
HELLO TIME = 1
HELLO SEQ = 190
00e02b00 00040000 cd280619 8100e3e8 005caaaa 0300e02b
00bb0100 00541f29 00000000 0000cd28 0619990b 00400105 03e80000
00000000 cd280619 00010002 010000bf
TYPE = HEALTH
CTRL VLAN = 1000
HELLO TIME = 1
HELLO SEQ = 191
00e02b00 00040000 cd280619 8100e3e8 005caaaa 0300e02b
00bb0100 00541eef 00000000 0000cd28 0619990b 00400105 03e80000
00000000 cd280619 00010002 010000f9
TYPE = HEALTH
CTRL VLAN = 1000
HELLO TIME = 1
HELLO SEQ = 249
1 on page 36
of the master node debug output.
STATE = COMPLETE
SYSTEM = 00-00-cd-28-06-19
FAIL TIME = 2
STATE = COMPLETE
SYSTEM = 00-00-cd-28-06-19
FAIL TIME = 2
STATE = COMPLETE
SYSTEM = 00-00-cd-28-06-19
FAIL TIME = 2
Debugging

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