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Usage guidelines
To change the link type of a port from trunk to hybrid or vice versa, first set the link type to access.
• The configuration made in Layer 2 Ethernet interface view applies only to the port.
• The configuration made in Layer 2 aggregate interface view applies to the aggregate interface
and its aggregation member ports.
{ If the system fails to apply the configuration to the aggregate interface, it stops applying the
configuration to aggregation member ports.
{ If the system fails to apply the configuration to an aggregation member port, it skips the port
and moves to the next member port.
Examples
# Configure GigabitEthernet 1/0/1 as a trunk port.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] port link-type trunk
port trunk permit vlan
Use port trunk permit vlan to assign a trunk port to the specified VLANs.
Use undo port trunk permit vlan to remove the trunk port from the specified VLANs.
Syntax
port trunk permit vlan { vlan-id-list | all }
undo port trunk permit vlan { vlan-id-list | all }
Default
A trunk port allows packets only from VLAN 1 to pass through.
Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin
Parameters
vlan-id-list: Specifies a space-separated list of up to 10 VLAN items. Each item specifies a VLAN ID
or a range of VLAN IDs in the form of vlan-id1 to vlan-id2. The value range for VLAN IDs is 1 to 4094.
The value for the vlan-id2 argument must be equal to or greater than the value for the vlan-id1
argument.
all: Specifies all VLANs. To prevent unauthorized VLAN users from accessing restricted resources
through a port, use the port trunk permit vlan all command with caution.
Usage guidelines
A trunk port can carry multiple VLANs. If you execute the port trunk permit vlan command multiple
times on a trunk port, the trunk port allows the VLANs specified by the vlan-id-list argument in each
execution.
On a trunk port, only packets from the PVID can pass through untagged.
• The configuration made in Layer 2 Ethernet interface view applies only to the port.
• The configuration made in Layer 2 aggregate interface view applies to the aggregate interface
and its aggregation member ports.