30.1.10 Configuring Multiple Failure Monitoring

<Structure of this section>

(1) Configuring Multiple Failure Monitoring VLAN

Points to note: Set the VLAN to be used as the multi-fault monitoring VLAN for each node in a shared link monitoring ring. Note that VLANs used as the control VLAN and VLAN for data transfer cannot be used. Note that VLAN IDs with the same value as the VLAN ID of a multi-fault monitoring VLAN used in a different ring cannot be used.

Command examples

(config)# axrp 1

Switches to axrp configuration mode for ring ID 1.
(config-axrp)# multi-fault-detection vlan 20

Sets VLAN 20 as the multi-fault monitoring VLAN.

Notes: Set the multi-fault monitoring VLAN on all nodes in shared link monitoring rings to which the multi-fault monitoring functionality is applied.

(2) Configuring the monitoring mode for the multiple failure monitoring feature

Points to note: Set the monitoring mode for multi-fault monitoring for each node in a shared link monitoring ring, as well as the ring ID of the shared link non-monitoring ring used as the backup ring during multi-fault detection. Sets the monitoring mode to monitor-enable for shared nodes performing multi-fault monitoring, and to transport-only on other devices. Sets the ring ID of the backup ring for shared nodes.

(a) Shared node of the shared link monitoring ring

Command examples

(config)# axrp 1

Switches to axrp configuration mode for ring ID 1.
(config-axrp)# multi-fault-detection mode monitor-enable backup-ring 2

Sets the monitoring mode for multi-fault monitoring to monitor-enable and the ring ID of the backup ring to 2.

Notes

Set the monitor-enable monitoring mode for multi-fault monitoring on the two shared nodes placed at the ends of a shared link. When it is set for just one node, multi-fault monitoring is not performed.

You cannot set a monitor-enable in the monitor mode during stacking configuration.

(b) Other nodes of the shared link monitoring ring

Command examples

(config)# axrp 1

Switches to axrp configuration mode for ring ID 1.
(config-axrp)# multi-fault-detection mode transport-only

Sets the monitoring mode for multi-fault monitoring to transport-only.

(3) Transmit Interval for Multiple Failure Monitoring Frames

Points to note: Set the sending interval for multi-fault monitoring frames on shared nodes in a shared link monitoring ring. This setting is ignored if performed for other nodes.

Command examples

(config)# axrp 1

(config-axrp)# multi-fault-detection interval 1000

Sets the sending interval for multi-fault monitoring frames to 1000 ms.

(4) Receive Wait Protection Time for Multiple Failure Monitor Frames

Points to note: Set the reception hold time for multi-fault monitoring frames on shared nodes in a shared link monitoring ring. This setting is ignored if performed for other nodes.

Command examples

(config)# axrp 1

(config-axrp)# multi-fault-detection holdtime 3000

Sets the reception hold time for multi-fault monitoring frames to 3000 ms.

Notes: Set the reception hold time (value set using the multi-fault-detection holdtime command) to a value greater than the sending interval of the opposing shared node (value set using the multi-fault-detection interval command).