Viewing Loop Detection Instance Details

Updated on 18 Oct 2022
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Use this page to view the status of the loop detection instances created on the unit, whether enabled or disabled.

To view the status of all loop detection instances

Access the page Loop Detection ►Status.
A summary of all loop detection instances that have been configured is displayed. The total number of instances found in the system is given in the lower-left corner of the page, as well as the index values of the items currently displayed on-screen (for example, [1–25] of 54). Use the page navigation links in the lower-right corner of the page to move between the pages of results.
Click the Name of an existing loop detection instance to view its detailed status.
The Loop Detection Status page opens.

Tip: Select the Poll Every n Seconds box, then enter a number representing the frequency with which the loop detection instance’s status will be automatically refreshed. You can also update the status manually by clicking the Refresh button.

For more information on specific parameters, refer to the following table.

Loop Detection Status (Loop Detection ►Status)

Parameter	Description
Index	The unique identifier assigned to the loop detection instance. You cannot modify this value.
Name	The name used to uniquely identify the loop detection instance.
State	The state of this loop detection instance. Acceptable values are either Enabled or Disabled.
Operational State	The operational state of this loop detection instance. Acceptable values are either Enabled or Disabled.
Type	The type of loop detection instance. Acceptable values are: Link: A loop detection instance that polls either a physical or a logical port. Tunnel: A loop detection instance that polls an OLO for either untagged frames (no VLAN) or loops on a specific VLAN.
Resource	The name of the physical/logical port or interface polled by this loop detection instance.
VLAN ID	The VLAN ID on which the loop detection beacon was sent.
Loop Detected	Whether or not a loop has been detected by this instance. If a loop has been detected on this resource, three consecutive beacons must indicate that the loop has been resolved in order for this value to revert back to No.
Latest Loop Detected Time	The timestamp (for example, 2016-02-17 15:47:11+00:00) of the most recent beacon that detected the presence of a loop on this resource. This value will continue to update, at the specified interval, until the loop is resolved.
Round-Trip Time(usec)	The loop detection beacon’s round-trip time, expressed in
microseconds.
Auto Block	Whether or not the auto-block mechanism has been enabled for this loop detection instance. When the auto-block mechanism is enabled, traffic is automatically blocked within one second upon the detection of a loop on this resource.
Revertive	Whether or not the auto-block mechanism's revertive mode has been enabled for this loop detection instance. When revertive mode is enabled, traffic is automatically unblocked within one second of a loop on this resource being resolved.
Traffic Blocked	Whether or not the traffic flow associated with this loop detection instance is currently being blocked, regardless of whether the block was manually or automatically applied.

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