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HP 5900 series Command Reference Manual: Loopback-detection Global Action

Layer 2 - lan switching.
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undo loopback-detection enable vlan { vlan-list | all }
Default
The loop detection function is disabled on ports.
Views
Ethernet interface view, aggregate interface view
Predefined user roles
network-admin
Parameters
vlan-list: Specifies a VLAN list, in the format of { vlan-id [ to vlan-id ] }&<1- 1 0>, where vlan-id represents
the VLAN ID in the range of 1 to 4094, and &<1- 1 0> indicates that you can specify up to 10 vlan-id [ to
vlan-id ] parameters.
all: Specifies all existing VLANs.
Usage guidelines
You can enable loop detection globally or on specific ports. The global configuration applies to all ports
in the specified VLAN. The per-port configuration applies to the individual port only when the port
belongs to the specified VLAN. The per-port configuration takes precedence over the global
configuration.
Example
# Enable loop detection on port Ten-GigabitEthernet 1/0/1 for VLAN 10 through VLAN 20.
<Sysname> system-view
[Sysname] interface ten-gigabitethernet 1/0/1
[System-Ten-GigabitEthernet1/0/1] loopback-detection enable vlan 10 to 20
Related commands
display loopback-detection
loopback-detection global enable

loopback-detection global action

Use loopback-detection global action to configure the global loop protection action.
Use undo loopback-detection global action to restore the default.
Syntax
loopback-detection global action shutdown
undo loopback-detection global action
Default
When the device detects a loop on a port, it generates a log but performs no action on the port.
Views
System view
Predefined user roles
network-admin
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This manual also for:

5920 series

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