161
Syntax
loopback-detection enable vlan
{
vlan-list
|
all
}
undo loopback-detection enable vlan
{
vlan-list
|
all
}
Default
The loop detection function is disabled on ports.
Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin
Parameters
vlan-list
: Specifies a VLAN list, in the format of {
vlan-id
[
to
vlan-id
] }&<1-10>, where
vlan-id
represents the VLAN ID in the range of 1 to 4094, and &<1-10>
indicates that you can specify up to
10
vlan-id
[
to
vlan-id
] parameters.
all
: Specifies all existing VLANs.
Usage guidelines
The port-specific loop detection configuration takes effect only after you enable loop detection
globally. To enable loop detection globally, use the
loopback-detection global enable
command.
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 GigabitEthernet 1/0/1 for VLAN 10 through VLAN 20.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[System-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
Summary of Contents for FlexNetwork 5130 HI series
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