TP-Link T1500-28PCT T1500-28PCTTL-SL2428PUN V3 User Guide - Page 124
In the, select one or more ports to con the loopback, detection parameters. Then click
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Managing Physical Interfaces Loopback Detection Configuration Loopback Detection Status Enable loopback detection globally. Detection Interval Set the interval of sending loopback detection packets in seconds. The valid value ranges from 1 to 1000 and the default value is 30. Auto-recovery Time Set the recovery time globally. The blocked port in Auto Recovery mode will automatically be recovered to normal status after the Auto-recovery Time expires. The value ranges from 2 to 100,000 in seconds, and the default value is 90. Web Refresh Status With this option enabled, the switch will refresh the web timely. By default, it is disabled. Web Refresh Interval If you enabled web refresh status, set the refresh interval in seconds between 3 and 100. The default value is 6. 2) In the Port Config section, select one or more ports to configure the loopback detection parameters. Then click Apply. Status Enable loopback detection for the port. Operation Mode Select the operation mode when a loopback is detected on the port: Alert: The Loop Status will display whether there is a loop detected on the corresponding port. It is the default setting. Port Based: In addition to displaying alerts, the switch will block the port on which the loop is detected. VLAN-Based: If a loop is detected in a VLAN on that port, in addition to displaying alerts, the switch will block that VLAN. The traffic of the other VLANs can still be normally forwarded by the port. Recovery Mode If you select Port Based or VLAN-Based as the operation mode, you also need to configure the recovery mode for the blocked port: Auto: The blocked port will automatically be recovered to normal status after the automatic recovery time expires. It is the default setting. Manual: You need to manually release the blocked port. Click Recovery to release the selected port. 3) (Optional) View the loopback detection information. Loop Status Displays whether a loop is detected on the port. Block Status Displays whether the port is blocked. Block VLAN Displays the blocked VLANs. User Guide 101
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