Allied Telesis AT-9924T-40, X900-48FE-N manual Master node transmits a Ring-Down-Flush-FDB message

Page 38

Debugging

4.The master node receives a Link-Down message on its secondary port

The master node receives a Link-Down message on its secondary port (port 2) from transit node B, which is at the other end of the broken link.

EPSR Port2 Rx: 00e02b00 00040000 cd24024f 8100e3e8 005caaaa 0300e02b 00bb0100 00542484 00000000 0000cd24 024f990b 00400108 03e80000 00000000 cd24024f 00000000 04000000

EPSR Port2 Rx:

-----------------------------------------------------------------------

TYPE

= LINK-DOWN

STATE

= LINK-DOWN

CTRL VLAN

= 1000

SYSTEM

=

00-00-cd-24-02-4f

HELLO TIME

=

0

FAIL TIME

=

0

HELLO SEQ

=

0

 

 

 

-----------------------------------------------------------------------

In the System field, this output shows the MAC address of the source of the message—the transit node in this case.

5.The master node transmits a Ring-Down-Flush-FDB message

The master switch responds to the break in the ring by sending a Ring-Down-Flush-FDB message, which tells each transit node to learn the new topology. The master node also unblocks its secondary port for the data VLAN (vlan2), flushes its FDB, sends an SNMP trap, and changes the EPSR state to Failed. Note that the master node sends the Ring-Down- Flush-FDB message only out its secondary port, because the link between the primary port and the neighbouring transit node is down.

EPSR Port2 Tx: 00e02b00 00040000 cd280619 8100e3e8 005caaaa 0300e02b 00bb0100 00541ee9 00000000 0000cd28 0619990b 00400107 03e80000 00000000 cd280619 00000000 02000000

EPSR Port2 Tx:

-----------------------------------------------------------------------

TYPE

= RING-DOWN-FLUSH-FDB

STATE

= FAILED

CTRL VLAN

= 1000

SYSTEM

=

00-00-cd-28-06-19

HELLO TIME

=

0

FAIL TIME

=

0

HELLO SEQ

=

0

 

 

 

-----------------------------------------------------------------------

Unblock EPSR:test port:2 VLAN:2 Flush FDB EPSR: test vid: 2

EPSR INFO: Send trap EPSR:test oldState:COMPLETE newState:FAILED nodeType:MASTER

EPSR test oldState:COMPLETE newState:FAILED

Page 38 AlliedWare™ OS How To Note: EPSR

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Contents Introduction What information will you find in this document?Which products and software versions does it apply to? How Epsr Works Epsr ComponentsEstablishing a Ring Recovering from a Fault Fault in a link or a transit nodeFault in the master node Transit Nodes with One Port Down Restoring Normal OperationMaster Node Transit Nodes with Both Ports DownHow To Configure Epsr Configuring EpsrEnable Epsr Iii. Remove the ring ports from the default VlanIv. Configure the Epsr domain Configure other ports and protocols as requiredModifying the Control Vlan Configure the Master Node a Example 1 a Basic RingCreate the Epsr domain Configure the Transit Nodes B and CRemove the ring ports from the default Vlan Add the data Vlan to the domainCreate epsr=test mode=transit controlvlan=vlan1000 Configure the master node switch a for domain Example 2 a Double RingConfigure the master node switch C for domain Configure EpsrConfigure the data Vlan for domain Configure the master node switch a for the Epsr domain Example 3 Epsr and RstpRemove the STP VLAN’s ports from the default Vlan Configure switch E for Epsr and Rstp Example 4 Epsr with Nested VLANs Epsr DomainConfigure the Epsr control Vlan Configure client switch G connected to transit node C Configure client switch E connected to the master nodeConfigure client switch F connected to transit node B Configure client switch H connected to transit node DExample 5 Epsr with management stacking Configure stacking on the first transit node host2 Configure stacking on the second transit node host3Configure the other VLANs on the stacked switches Configure Epsr on the stacked switchesConfigure the AT-TN7100 iMAP as Master Node Example 6 Epsr with an iMAPChecking the Master Node Configuration Following diagram shows the expected outputConfigure the AT-TN7100 iMAP as a Transit Node Checking the Transit Node ConfigurationClassifiers and Hardware Filters LINKS-UPPorts and Recovery Times Igmp Snooping and Recovery Times Health Message PriorityEpsr State and Settings Epsr Information Name Domain1 Snmp Traps Counters Master Node Node a Debug Output DebuggingLink Down Between Master Node and Transit Node Master node sends Health messagesMaster node continues sending Health messages Primary port goes downMaster node transmits a Ring-Down-Flush-FDB message Primary port comes back up Hello timer expiresHello timer expires again Master node returns the ring to a state of Complete Master node receives the Ring-Up-Flush-FDB message on portMaster node transmits and receives Health messages Transit Node Node B Debug Output Transit node receives Health messagesPort 1 on the transit node goes down Transit node receives a Ring-Down-Flush-FDB messagePort 1 comes back up Transit node receives a Health messageTransit node receives a Ring-Up-Flush-FDB message 252 Link Down Between Two Transit Nodes Link between the two transit nodes goes down Master node receives a second Link-Down message Master node receives a Health message 51 AlliedWare OS How To Note Epsr 375 53 AlliedWare OS How To Note Epsr Transit node sends a Link-Down message Link comes back up Transit node receives another Health messageTransit node receives a Ring-Up-Flush-FDB message

AT-9924SP-30, AT-9924T-40, AT-8948, AT-9924T/4SP-A-20, X900-48FE-N specifications

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