Brocade BigIron RX Series Configuration Guide - Manual (Page 642)

564 BigIron RX Series Configuration Guide
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Port loop detection support in MCT
20
BigIron RX(config)# interface ethernet 1/1
BigIron RX(config-if-e1000-1/1)# loop-detection
Syntax: [no] loop-detection
The no form of the loop-detection command disables the loop detection feature.
To configure the loop detection for a VLAN, enter commands such as the following.
BigIron RX(config)# vlan 20
BigIron RX(config-vlan-20)# loop-detection
To configure the loop detection for a physical port on a specific VLAN, enter a command such as the
following.
BigIron RX(config-if-e1000-1/1)# loop-detection vlan 10
Syntax: [no] loop-detection [vlan <vlan-id>]
The vlan <vlan-id> parameter specifies the VLAN range for the specified port. A port can be a
tagged or untagged member of the VLAN.
You can configure the loop detection feature for a single port on multiple VLANs. Loop detection
BPDUs are sent out through the loop detection-enabled port.
Disabling port shutdown
You can use the loop-detection shutdown-disable command in strict mode or loose mode to disable
the port shutdown feature and thereby ensure that the ICL stays up when the loop detection
Protocol Data Units (PDUs) are received on the ICL. To prevent port shutdown due to loop detection,
enter the following command.
BigIron RX(config-if-e1000-1/1)# loop-detection shutdown-disable
Syntax: [no] loop-detection shutdown-disable
Shutting down the sending ports
By default, the receiving port is shut down in case of loop detection. The loop-detection
shutdown-sending-port command shuts down the port that sends the loop detection PDUs instead
of shutting down the receiving port. You can use this command only in strict mode.
To shut down the sending port in case of loop detection, enter the following command.
BigIron RX(config-if-e1000-1/1)# loop-detection shutdown-sending-port
Syntax: [no] loop-detection shutdown-sending-port
Setting the syslog interval
If the loop-detection shutdown-disable command is configured for a specific port, you can use the
loop-detection syslog-interval command to specify the interval at which the loop detection syslog
message is generated.
To configure the loop detection syslog interval to 30 minutes, enter the following command.
BigIron RX(config)# loop-detection syslog-interval 30
Syntax: [no] loop-detection syslog-interval <mins>