Table of Contents

Chapter 1 VLAN-VPN Configuration Commands. 1-1

1.1 VLAN-VPN Configuration Commands. 1-1

1.1.1 display port vlan-vpn. 1-1

1.1.2 vlan-vpn enable. 1-2

1.1.3 vlan-vpn inner-cos-trust 1-3

1.1.4 vlan-vpn tpid. 1-3

Chapter 2 BPDU Tunnel Configuration Commands. 2-1

2.1 BPDU TUNNEL Configuration Commands. 2-1

2.1.1 bpdu-tunnel 2-1

2.1.2 bpdu-tunnel uplink. 2-2

 

Chapter 1  VLAN-VPN Configuration Commands

1.1  VLAN-VPN Configuration Commands

1.1.1  display port vlan-vpn

Syntax

display port vlan-vpn

View

Any view

Parameter

None

Description

Use the display port vlan-vpn command to display the information about VLAN VPN configuration of the current system, including current TPID value, VLAN-VPN ports, and whether or not the inner VLAN tag priority replication function is enabled.

Example

# Display the VLAN-VPN configuration of the current system.

<H3C> display port vlan-vpn

Ethernet1/0/1

 VLAN-VPN TPID: 8100

 

Ethernet1/0/2

 VLAN-VPN status: enabled

 VLAN-VPN VLAN: 1

 VLAN-VPN inner-cos-trust status: disable

 VLAN-VPN TPID: 8100

 

Ethernet1/0/3

 VLAN-VPN TPID: 8100

 

Ethernet1/0/4

 VLAN-VPN TPID: 8100

(Omitted)

1.1.2  vlan-vpn enable

Syntax

vlan-vpn enable

undo vlan-vpn

View

Ethernet port view

Parameter

None

Description

Use the vlan-vpn enable command to enable the VLAN-VPN function for a port.

Use the undo vlan-vpn command to disable the VLAN-VPN function for a port.

By default, the VLAN-VPN function is disabled.

With the VLAN VPN function enabled, a received packet is tagged with the default VLAN tag of the receiving port no matter whether or not the packet already carries a VLAN tag. If the packet already carries a VLAN tag, the packet becomes a dual-tagged packet. Otherwise, the packet becomes a packet carrying the default VLAN tag of the port.

 

 

Example

# Enable the VLAN-VPN function for Ethernet1/0/1 port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C]interface Ethernet 1/0/1

[H3C-Ethernet1/0/1] vlan-vpn enable

1.1.3  vlan-vpn inner-cos-trust

Syntax

vlan-vpn inner-cos-trust enable

undo vlan-vpn inner-cos-trust

View

Ethernet port view

Parameter

None

Description

Use the vlan-vpn inner-cos-trust enable command to enable the inner tag priority replication function.

Use the undo vlan-vpn inner-cos-trust command to disable the inner tag priority replication function.

By default, the inner tag priority replication function is disabled.

Example

# Enable the inner tag priority replication function for the Ethernet 1/0/2 port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Ethernet 1/0/2

[H3C-Ethernet1/0/2] vlan-vpn inner-cos-trust enable

1.1.4  vlan-vpn tpid

Syntax

vlan-vpn tpid value

undo vlan-vpn tpid

View

Ethernet port view

Parameter

value: User-defined TPID value (in hexadecimal format), in the range 1 to 0xFFFF.

Description

Use the vlan-vpn tpid command to set a TPID value for a port.

Use the undo vlan-vpn tpid command to restore the default TPID value.

The default TPID value is 0x8100.

The position of the TPID field in an Ethernet packet is the same as the position of the protocol type field in a packet without VLAN Tag. Thus, to avoid confusion happening when the switch forwards or receives a packet, do not configure the protocol type values listed in Table 1-1 as the TPID value.

Table 1-1 Common Ethernet frame protocol type values

Protocol type	Value
ARP	0x0806
IP	0x0800
MPLS	0x8847/0x8848
IPX	0x8137
IS-IS	0x8000
LACP	0x8809
802.1x	0x888E

 

Example

# Set the TPID value to 0x12 for Ethernet1/0/2 port.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Ethernet 1/0/2

[H3C-Ethernet1/0/2] vlan-vpn tpid 12

 

Chapter 2  BPDU Tunnel Configuration Commands

2.1  BPDU TUNNEL Configuration Commands

2.1.1  bpdu-tunnel

Syntax

bpdu-tunnel { lacp | ndp | cdp | vtp }

undo bpdu-tunnel { lacp | ndp | cdp | vtp | all }

View

Ethernet port view

Parameter

lacp: Enables/Disables BPDU Tunnel function for LACP (link aggregation control protocol) packets.

ndp: Enables/Disables BPDU Tunnel function for NDP (neighbor discovery protocol) packets.

cdp: Enables/Disables BPDU Tunnel function for CDP (Cisco discovery protocol) packets.

vtp: Enables/Disables BPDU Tunnel function for VTP (virtual terminal protocol) packets.

all: Disables the BPDU Tunnel function for the packets of all the above-mentioned protocols.

Description

Use the bpdu-tunnel command to enable the BPDU Tunnel function for the packets of a specific protocol. You can enable the function for the packets of these protocols: LACP, NDP, CDP, and VTP.

Use the undo bpdu-tunnel command to disable the BPDU Tunnel function for the packets of a specified protocol or all the above-mentioned protocols.

 

 

Example

# Enable the BPDU Tunnel function for LACP packets.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C-Ethernet1/0/1] bpdu-tunnel lacp

2.1.2  bpdu-tunnel uplink

Syntax

bpdu-tunnel uplink [ interface interface-list ]

View

System view, Ethernet port view

Parameter

interface interface-list: Specifies lists of Ethernet ports. To specify multiple Ethernet ports, you need to provide the interface-list argument in the form of interface-list = { interface-type interface-number [ to interface-type interface-number ] }&<1-10>, where &<1-10> means that you can specify up to ten port indexes/port index lists at one time. This argument is unavailable in Ethernet port view.

Description

Use the bpdu-tunnel uplink command to configure an Ethernet port or multiple Ethernet ports as uplink BPDU Tunnel ports. A device listens to its uplink BPDU Tunnel ports and picks out the Layer 2 protocol packets that reach the ports.

Example

# Configure Ethernet1/0/1 through Ethernet1/0/5 ports as uplink BPDU Tunnel ports.

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] bpdu-tunnel uplink Ethernet 1/0/1 to Ethernet 1/0/5