Debugging
5.The transit node receives Health messages
The transit node receives Health messages from the master node. These have a state of Failed, which shows that the ring is still broken.
This is the packet shown in step 6 on page 50 of the master node debug output.
Manager
EPSR Port1 Rx: 00e02b00 00040000 cd280619 8100e3e8 005caaaa 0300e02b 00bb0100 00541d9f 00000000 0000cd28 0619990b 00400105 03e80000 00000000 cd280619 00010002 02000149
EPSR Port1 Rx:
TYPE | = HEALTH | STATE | = FAILED | ||
CTRL VLAN | = 1000 | SYSTEM | = | ||
HELLO TIME | = | 1 | FAIL TIME | = | 2 |
HELLO SEQ | = | 329 |
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6.The link comes back up
The transit node detects that the broken link has come back up. It blocks the port to prevent a loop from occurring, sends a trap, and changes the EPSR state to
Manager
Block EPSR:test port:2 VLAN:2 EPSR test, Port 2 port up
EPSR INFO: Send trap EPSR:test
EPSR test
7.The transit node receives another Health message
The transit node receives another Health message. This message will make it back to the master node’s secondary port, because the link between the two transit nodes is now up.
This is the packet shown in step 7 on page 50 of the master node debug output.
Manager
EPSR Port1 Rx: 00e02b00 00040000 cd280619 8100e3e8 005caaaa 0300e02b 00bb0100 00541d72 00000000 0000cd28 0619990b 00400105 03e80000 00000000 cd280619 00010002 02000176
EPSR Port1 Rx:
TYPE | = HEALTH | STATE | = FAILED | ||
CTRL VLAN | = 1000 | SYSTEM | = | ||
HELLO TIME | = | 1 | FAIL TIME | = | 2 |
HELLO SEQ | = | 374 |
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