VLAN tagging features enable service providers to separate or aggregate customer traffic in the service provider network. The following are available VLAN tagging operations:

· Adding a layer of service provider VLAN (SVLAN) tag.

· Modifying the SVLAN tag, CVLAN tag, or both.

To add an SVLAN tag, use one of the following VLAN tagging features:

· QinQ—Tags all incoming frames (tagged or untagged) on the customer-side port with the PVID of the port.

· One-to-two VLAN mapping—Adds different SVLANs for traffic with different CVLAN tags.

· Zero-to-two VLAN mapping—Adds double VLAN tags to untagged packets.

· Two-to-three VLAN mapping—Adds an outermost VLAN tag to double-tagged packets.

· Policy-based VLAN manipulation—Uses QoS nest actions in a QoS policy to tag different classes of frames with different SVLAN tags. Traffic classifiers include CVLAN ID, IP address, and MAC address. In addition, you can use QoS priority marking to set the 802.1p priority in SVLAN tags.

To modify VLAN tags, use one of the following VLAN tagging features:

· VLAN mapping—Includes the following features:

¡ One-to-one VLAN mapping—Replaces one VLAN tag with another.

¡ Many-to-one VLAN mapping—Replaces multiple VLAN tags with the same VLAN tag.

¡ Two-to-two VLAN mapping—Replaces the SVLAN ID, CVLAN ID, or both IDs for an incoming double-tagged frame.

· Policy-based VLAN manipulation—Uses a QoS policy to modify the CVLAN or SVLAN ID by using the remark customer-vlan-id or remark service-vlan-id action.

The devices in the service provider network learn MAC addresses of CVLANs into the MAC address table of the SVLAN.

Prerequisites

The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network.

This document assumes that you have basic knowledge of QinQ, VLAN mapping, QoS nesting, and QoS priority and CVLAN marking.

General configuration restrictions and guidelines

EVB and the VLAN tagging features are mutually exclusive. Do not use EVB with any VLAN tagging features on a port.

Example: Configuring QoS policies for SVLAN tagging

Network configuration

As shown in Figure 1:

· Customer A and Customer B each have two branches that require Layer 2 connectivity over the service provider network.

· The three types of traffic require separate transmission through three VLANs provided by the service provider. The service provider network configures different transmission policies for each type of traffic.

Apply a QoS policy to each customer-side port on PE A and PE B to separate the traffic by customer and traffic type.

Figure 1 Network diagram

Table 1 shows the VLAN assignment. For each customer, the service provider assigns one SVLAN by traffic type. Figure 2 shows the expected traffic transmission pattern after the QoS policies are applied to customer-side ports.

Table 1 VLAN assignment

Traffic type	CVLANs	SVLAN
Customer A:
Video	31 to 40	1003
Voice	21 to 30	1002
Data	10 to 20	1001
Customer B:
Storage	36 to 40	2003
Voice	26 to 35	2002
Data	15 to 25	2001

Figure 2 Expected traffic pattern in the service provider network

Analysis

For the customer-side ports to support multiple SVLANs and send traffic to the customer site with the SVLAN tag removed, you must perform the following tasks:

1. Configure the link type as hybrid on the customer-side ports.

2. Assign the ports to the SVLANs as untagged VLAN members.

By default, the 802.1p priority in the SVLAN tag added by a port depends on the priority trust mode on the port.

· If the 802.1p priority in frames is trusted, the device copies the 802.1p priority in the CVLAN tag to the SVLAN tag.

· If port priority is trusted, the port priority is used as the 802.1p priority in the SVLAN tag. For untagged incoming frames, the port encapsulates the port priority as the 802.1p priority in the SVLAN tag.

To add SVLAN tags for traffic of different types, configure an SVLAN tagging QoS policy.

Applicable hardware and software versions

The following matrix shows the hardware and software versions to which this configuration example is applicable:

Hardware	Software version
S6550X-HI switch series	Release 1116 and later Release 1213P51 and later
S6880 switch series	Release 1116 and later Release 1213P51 and later
S9820-8M	Release 1116 and later Release 1213P51 and later
S5580X-HI switch series	Release 1213P50 and later
S5580X-EI switch series	Release 1213P50 and later
S5580X-EI switch series	Release 1213P50 and later

Restrictions and guidelines

For frames to travel across the service provider network, follow these restrictions and guidelines:

· Set the MTU to a minimum of 1504 bytes for each port on the path of frames. This value is the sum of the default Ethernet interface MTU (1500 bytes) and the length (4 bytes) of a CVLAN tag. The CVLAN tag of frames is treated as part of the payload during transmission.

· Configure all the ports on the forwarding path to allow frames from VLANs 1001 through 1003 and VLANs 2001 through 2003 to pass through without modifying or removing the VLAN tag.

Procedures

Configuring PE A

1. Create SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

<PE_A> system-view

[PE_A] vlan 1001 to 1003

[PE_A] vlan 2001 to 2003

2. Configure the customer-side port Twenty-FiveGigE 1/0/1:

# Configure the port as a hybrid port.

[PE_A] interface twenty-fivegige 1/0/1

[PE_A-Twenty-FiveGigE1/0/1] port link-type hybrid

# Remove the port from VLAN 1.

[PE_A-Twenty-FiveGigE1/0/1] undo port hybrid vlan 1

# Assign the port to SVLANs 1001 through 1003 as an untagged VLAN member.

[PE_A-Twenty-FiveGigE1/0/1] port hybrid vlan 1001 to 1003 untagged

# Configure the port to trust the 802.1p priority of frames.

[PE_A-Twenty-FiveGigE1/0/1] qos trust dot1p

[PE_A-Twenty-FiveGigE1/0/1] quit

3. Configure the customer-side port Twenty-FiveGigE 1/0/2:

# Configure the port as a hybrid port.

[PE_A] interface twenty-fivegige 1/0/2

[PE_A-Twenty-FiveGigE1/0/2] port link-type hybrid

# Remove the port from VLAN 1.

[PE_A-Twenty-FiveGigE1/0/2] undo port hybrid vlan 1

# Assign the port to SVLANs 2001 through 2003 as an untagged VLAN member.

[PE_A-Twenty-FiveGigE1/0/2] port hybrid vlan 2001 to 2003 untagged

# Configure the port to trust the 802.1p priority of frames.

[PE_A-Twenty-FiveGigE1/0/2] qos trust dot1p

[PE_A-Twenty-FiveGigE1/0/2] quit

3. Configure the service provider-side port Twenty-FiveGigE 1/0/3:

# Configure the port as a trunk port.

[PE_A] interface twenty-fivegige 1/0/3

[PE_A-Twenty-FiveGigE1/0/3] port link-type trunk

# Remove the port from VLAN 1.

[PE_A-Twenty-FiveGigE1/0/3] undo port trunk permit vlan 1

# Assign the port to SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_A-Twenty-FiveGigE1/0/3] port trunk permit vlan 1001 to 1003 2001 to 2003

[PE_A-Twenty-FiveGigE1/0/3] quit

4. Configure QoS policies for SVLAN tagging and 802.1p priority marking:

# Create the class customer_A_pc to match traffic from CVLANs 10 through 20 (data traffic) for Customer A.

[PE_A] traffic classifier customer_A_pc

[PE_A-classifier-customer_A_pc] if-match customer-vlan-id 10 to 20

[PE_A-classifier-customer_A_pc] quit

# Create the classes customer_A_voice and customer_A_video to match Customer A's voice traffic and video traffic, respectively.

[PE_A] traffic classifier customer_A_voice

[PE_A-classifier-customer_A_voice] if-match customer-vlan-id 21 to 30

[PE_A-classifier-customer_A_voice] quit

[PE_A] traffic classifier customer_A_video

[PE_A-classifier-customer_A_video] if-match customer-vlan-id 31 to 40

[PE_A-classifier-customer_A_video] quit

# Configure SVLAN tagging actions for Customer A's three traffic types.

[PE_A] traffic behavior customer_A_pc

[PE_A-behavior-customer_A_pc] nest top-most vlan 1001

[PE_A-behavior-customer_A_pc] quit

[PE_A] traffic behavior customer_A_voice

[PE_A-behavior-customer_A_voice] nest top-most vlan 1002

[PE_A-behavior-customer_A_voice] quit

[PE_A] traffic behavior customer_A_video

[PE_A-behavior-customer_A_video] nest top-most vlan 1003

[PE_A-behavior-customer_A_video] quit

# Create the QoS policy customer_A for Customer A, and associate the classes with their respective behaviors in the QoS policy.

[PE_A] qos policy customer_A

[PE_A-qospolicy-customer_A] classifier customer_A_pc behavior customer_A_pc

[PE_A-qospolicy-customer_A] classifier customer_A_voice behavior customer_A_voice

[PE_A-qospolicy-customer_A] classifier customer_A_video behavior customer_A_video

[PE_A-qospolicy-customer_A] quit

# Apply the QoS policy customer_A to the inbound direction of Twenty-FiveGigE 1/0/1.

[PE_A] interface twenty-fivegige 1/0/1

[PE_A-Twenty-FiveGigE1/0/1] qos apply policy customer_A inbound

[PE_A-Twenty-FiveGigE1/0/1] quit

# Create traffic classes for matching Customer B's three traffic types.

[PE_A] traffic classifier customer_B_pc

[PE_A-classifier-customer_B_pc] if-match customer-vlan-id 15 to 25

[PE_A-classifier-customer_B_pc] quit

[PE_A] traffic classifier customer_B_voice

[PE_A-classifier-customer_B_voice] if-match customer-vlan-id 26 to 35

[PE_A-classifier-customer_B_voice] quit

[PE_A] traffic classifier customer_B_storage

[PE_A-classifier-customer_B_storage] if-match customer-vlan-id 36 to 40

[PE_A-classifier-customer_B_storage] quit

# Configure SVLAN tagging behaviors for Customer B's traffic types.

[PE_A] traffic behavior customer_B_pc

[PE_A-behavior-customer_B_pc] nest top-most vlan 2001

[PE_A-behavior-customer_B_pc] quit

[PE_A] traffic behavior customer_B_voice

[PE_A-behavior-customer_B_voice] nest top-most vlan 2002

[PE_A-behavior-customer_B_voice] quit

[PE_A] traffic behavior customer_B_storage

[PE_A-behavior-customer_B_storage] nest top-most vlan 2003

[PE_A-behavior-customer_B_storage] quit

# Create the QoS policy customer_B for Customer B, and associate the classes with their respective behaviors in the QoS policy.

[PE_A] qos policy customer_B

[PE_A-qospolicy-customer_B] classifier customer_B_pc behavior customer_B_pc

[PE_A-qospolicy-customer_B] classifier customer_B_voice behavior customer_B_voice

[PE_A-qospolicy-customer_B] classifier customer_B_storage behavior customer_B_storage

[PE_A-qospolicy-customer_B] quit

# Apply the QoS policy customer_B to the inbound direction of Twenty-FiveGigE 1/0/2.

[PE_A] interface twenty-fivegige 1/0/2

[PE_A-Twenty-FiveGigE1/0/2] qos apply policy customer_B inbound

[PE_A-Twenty-FiveGigE1/0/2] quit

Configuring PE B

1. Create SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

<PE_B> system-view

[PE_B] vlan 1001 to 1003

[PE_B] vlan 2001 to 2003

2. Configure the customer-side port Twenty-FiveGigE 1/0/1:

# Configure the port as a hybrid port.

[PE_B] interface twenty-fivegige 1/0/1

[PE_B-Twenty-FiveGigE1/0/1] port link-type hybrid

# Remove the port from VLAN 1.

[PE_B-Twenty-FiveGigE1/0/1] undo port hybrid vlan 1

# Assign the port to SVLANs 2001 through 2003 as an untagged VLAN member.

[PE_B-Twenty-FiveGigE1/0/1] port hybrid vlan 2001 to 2003 untagged

# Configure the port to trust the 802.1p priority of frames.

[PE_B-Twenty-FiveGigE1/0/1] qos trust dot1p

[PE_B-Twenty-FiveGigE1/0/1] quit

3. Configure the customer-side port Twenty-FiveGigE 1/0/2:

# Configure the port as a hybrid port.

[PE_B] interface twenty-fivegige 1/0/2

[PE_B-Twenty-FiveGigE1/0/2] port link-type hybrid

# Remove the port from VLAN 1.

[PE_B-Twenty-FiveGigE1/0/2] undo port hybrid vlan 1

# Assign the port to SVLANs 1001 through 1003 as an untagged VLAN member.

[PE_B-Twenty-FiveGigE1/0/2] port hybrid vlan 1001 to 1003 untagged

# Configure the port to trust the 802.1p priority of frames.

[PE_B-Twenty-FiveGigE1/0/2] qos trust dot1p

[PE_B-Twenty-FiveGigE1/0/2] quit

4. Configure the service provider-side port Twenty-FiveGigE 1/0/3:

# Configure the port as a trunk port.

[PE_B] interface twenty-fivegige 1/0/3

[PE_B-Twenty-FiveGigE1/0/3] port link-type trunk

# Remove the port from VLAN 1.

[PE_B-Twenty-FiveGigE1/0/3] undo port trunk permit vlan 1

# Assign the port to SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_B-Twenty-FiveGigE1/0/3] port trunk permit vlan 1001 to 1003 2001 to 2003

[PE_B-Twenty-FiveGigE1/0/3] quit

5. Configure QoS policies for SVLAN tagging and 802.1p priority marking:

# Create traffic classes for matching Customer A's traffic types.

[PE_B] traffic classifier customer_A_pc

[PE_B-classifier-customer_A_pc] if-match customer-vlan-id 10 to 20

[PE_B-classifier-customer_A_pc] quit

[PE_B] traffic classifier customer_A_voice

[PE_B-classifier-customer_A_voice] if-match customer-vlan-id 21 to 30

[PE_B-classifier-customer_A_voice] quit

[PE_B] traffic classifier customer_A_video

[PE_B-classifier-customer_A_video] if-match customer-vlan-id 31 to 40

[PE_B-classifier-customer_A_video] quit

# Configure SVLAN tagging behaviors for Customer A's three traffic types.

[PE_B] traffic behavior customer_A_pc

[PE_B-behavior-customer_A_pc] nest top-most vlan 1001

[PE_B-behavior-customer_A_pc] quit

[PE_B] traffic behavior customer_A_voice

[PE_B-behavior-customer_A_voice] nest top-most vlan 1002

[PE_B-behavior-customer_A_voice] quit

[PE_B] traffic behavior customer_A_video

[PE_B-behavior-customer_A_video] nest top-most vlan 1003

[PE_B-behavior-customer_A_video] quit

# Create the QoS policy customer_A for Customer A, and associate the classes with their respective behaviors in the QoS policy.

[PE_B] qos policy customer_A

[PE_B-qospolicy-customer_A] classifier customer_A_pc behavior customer_A_pc

[PE_B-qospolicy-customer_A] classifier customer_A_voice behavior customer_A_voice

[PE_B-qospolicy-customer_A] classifier customer_A_video behavior customer_A_video

[PE_B-qospolicy-customer_A] quit

# Apply the QoS policy customer_A to the inbound direction of Twenty-FiveGigE 1/0/2.

[PE_B] interface twenty-fivegige 1/0/2

[PE_B-Twenty-FiveGigE1/0/2] qos apply policy customer_A inbound

[PE_B-Twenty-FiveGigE1/0/2] quit

# Create traffic classes for matching Customer B's three traffic types.

[PE_B] traffic classifier customer_B_pc

[PE_B-classifier-customer_B_pc] if-match customer-vlan-id 15 to 25

[PE_B-classifier-customer_B_pc] quit

[PE_B] traffic classifier customer_B_voice

[PE_B-classifier-customer_B_voice] if-match customer-vlan-id 26 to 35

[PE_B-classifier-customer_B_voice] quit

[PE_B] traffic classifier customer_B_storage

[PE_B-classifier-customer_B_storage] if-match customer-vlan-id 36 to 40

[PE_B-classifier-customer_B_storage] quit

# Configure SVLAN tagging behaviors for Customer B's three traffic types.

[PE_B] traffic behavior customer_B_pc

[PE_B-behavior-customer_B_pc] nest top-most vlan 2001

[PE_B-behavior-customer_B_pc] quit

[PE_B] traffic behavior customer_B_voice

[PE_B-behavior-customer_B_voice] nest top-most vlan 2002

[PE_B-behavior-customer_B_voice] quit

[PE_B] traffic behavior customer_B_storage

[PE_B-behavior-customer_B_storage] nest top-most vlan 2003

[PE_B-behavior-customer_B_storage] quit

# Create the QoS policy customer_B for Customer B, and associate the classes with their respective behaviors in the QoS policy.

[PE_B] qos policy customer_B

[PE_B-qospolicy-customer_B] classifier customer_B_pc behavior customer_B_pc

[PE_B-qospolicy-customer_B] classifier customer_B_voice behavior customer_B_voice

[PE_B-qospolicy-customer_B] classifier customer_B_storage behavior customer_B_storage

[PE_B-qospolicy-customer_B] quit

# Apply the QoS policy customer_B to the inbound direction of Twenty-FiveGigE 1/0/1.

[PE_B] interface twenty-fivegige 1/0/1

[PE_B-Twenty-FiveGigE1/0/1] qos apply policy customer_B inbound

[PE_B-Twenty-FiveGigE1/0/1] quit

Configuring devices between PE A and PE B

# Set the MTU to a minimum of 1504 bytes for each port on the path of frames. (Details not shown.)

# Configure all ports on the path between PE A and PE B allow frames from VLANs 1001 through 1003 and VLANs 2001 through 2003 to pass through without modifying or removing the VLAN tag. (Details not shown.)

Verifying the configuration

# Verify the configuration on each port. This example uses Twenty-FiveGigE 1/0/1 of PE A.

[PE_A] interface twenty-fivegige 1/0/1

[PE_A-Twenty-FiveGigE1/0/1] display this

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 1001 to 1003 untagged

qos trust dot1p

qos apply policy customer_A inbound

Return

[PE_A-Twenty-FiveGigE1/0/1] quit

# Verify the QoS configuration on each port. This example uses Twenty-FiveGigE 1/0/1 of PE A.

[PE_A] display qos policy interface twenty-fivegige 1/0/1

Interface: Twenty-FiveGigE1/0/1

Direction: Inbound

Policy: customer_A

Classifier: customer_A_pc

Operator: AND

Rule(s) :

If-match customer-vlan-id 10 to 20

Behavior: customer_A_pc

Nesting:

Nest top-most vlan-id 1001

Classifier: customer_A_voice

Operator: AND

Rule(s) :

If-match customer-vlan-id 21 to 30

Behavior: customer_A_voice

Nesting:

Nest top-most vlan-id 1002

Classifier: customer_A_video

Operator: AND

Rule(s) :

If-match customer-vlan-id 31 to 40

Behavior: customer_A_video

Nesting:

Nest top-most vlan-id 1003

Configuration files

· PE A:

vlan 1001 to 1003

vlan 2001 to 2003

traffic classifier customer_A_pc operator and

if-match customer-vlan-id 10 to 20

traffic classifier customer_A_voice operator and

if-match customer-vlan-id 21 to 30

traffic classifier customer_A_video operator and

if-match customer-vlan-id 31 to 40

traffic classifier customer_B_pc operator and

if-match customer-vlan-id 15 to 25

traffic classifier customer_B_voice operator and

if-match customer-vlan-id 26 to 35

traffic classifier customer_B_storage operator and

if-match customer-vlan-id 36 to 40

traffic behavior customer_A_pc

nest top-most vlan 1001

traffic behavior customer_A_voice

nest top-most vlan 1002

traffic behavior customer_A_video

nest top-most vlan 1003

traffic behavior customer_B_pc

nest top-most vlan 2001

traffic behavior customer_B_voice

nest top-most vlan 2002

traffic behavior customer_B_storage

nest top-most vlan 2003

qos policy customer_A

classifier customer_A_pc behavior customer_A_pc

classifier customer_A_voice behavior customer_A_voice

classifier customer_A_video behavior customer_A_video

qos policy customer_B

classifier customer_B_pc behavior customer_B_pc

classifier customer_B_voice behavior customer_B_voice

classifier customer_B_storage behavior customer_B_storage

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 1001 to 1003 untagged

qos trust dot1p

qos apply policy customer_A inbound

interface Twenty-FiveGigE1/0/2

port link-mode bridge

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 2001 to 2003 untagged

qos trust dot1p

qos apply policy customer_B inbound

interface Twenty-FiveGigE1/0/3

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 1001 to 1003 2001 to 2003

· PE B:

vlan 1001 to 1003

vlan 2001 to 2003

traffic classifier customer_A_pc operator and

if-match customer-vlan-id 10 to 20

traffic classifier customer_A_voice operator and

if-match customer-vlan-id 21 to 30

traffic classifier customer_A_video operator and

if-match customer-vlan-id 31 to 40

traffic classifier customer_B_pc operator and

if-match customer-vlan-id 15 to 25

traffic classifier customer_B_voice operator and

if-match customer-vlan-id 26 to 35

traffic classifier customer_B_storage operator and

if-match customer-vlan-id 36 to 40

traffic behavior customer_A_pc

nest top-most vlan 1001

traffic behavior customer_A_voice

nest top-most vlan 1002

traffic behavior customer_A_video

nest top-most vlan 1003

traffic behavior customer_B_pc

nest top-most vlan 2001

traffic behavior customer_B_voice

nest top-most vlan 2002

traffic behavior customer_B_storage

nest top-most vlan 2003

qos policy customer_A

classifier customer_A_pc behavior customer_A_pc

classifier customer_A_voice behavior customer_A_voice

classifier customer_A_video behavior customer_A_video

qos policy customer_B

classifier customer_B_pc behavior customer_B_pc

classifier customer_B_voice behavior customer_B_voice

classifier customer_B_storage behavior customer_B_storage

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 2001 to 2003 untagged

qos trust dot1p

qos apply policy customer_B inbound

interface Twenty-FiveGigE1/0/2

port link-mode bridge

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 1001 to 1003 untagged

qos trust dot1p

qos apply policy customer_A inbound

interface Twenty-FiveGigE1/0/3

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 1001 to 1003 2001 to 2003

Example: Configuring QinQ

Network configuration

As shown in Figure 3:

· The service provider assigns VLAN 1000 to Company A's VLANs 100 through 150.

· The service provider assigns VLAN 2000 to Company B's VLANs 120 through 200.

Configure QinQ on PE A and PE B to transmit traffic in VLANs 1000 and 2000 for Company A and Company B, respectively.

Figure 3 Network diagram

Applicable hardware and software versions

The following matrix shows the hardware and software versions to which this configuration example is applicable:

Hardware	Software version
S6550X-HI switch series	Release 1213P51 and later
S6880 switch series	Release 1213P51 and later
S9820-8M	Release 1213P51 and later
S5580X-HI switch series	Release 1213P50 and later
S5580X-EI switch series	Release 1213P50 and later
S5580S-EI switch series	Release 1213P50 and later

Restrictions and guidelines

When you configure QinQ, follow these restrictions and guidelines:

· You only need to configure QinQ on customer-side ports of PEs.

· The link type of the customer-side port can be access, hybrid, or trunk.

¡ If the link type is access, you must assign the port to the SVLAN.

¡ If the link type is trunk, you must assign the port to the SVLAN, and set the SVLAN ID as the PVID of the port.

¡ If the link type is hybrid, you must assign the port to the SVLAN as an untagged VLAN member, and set the SVLAN ID as the PVID of the port. The settings ensure that the port can forward traffic to the customer site with the SVLAN tag removed.

· For QinQ frames to travel across the service provider network, you must perform the following tasks:

¡ Set the MTU to a minimum of 1504 bytes for each port on the path of QinQ frames. This value is the sum of the default Ethernet interface MTU (1500 bytes) and the length (4 bytes) of a CVLAN tag. The CVLAN tag of QinQ frames is treated as part of the payload during transmission.

¡ Configure all the ports on the forwarding path to allow frames from VLANs 1000 and 2000 to pass through without removing the VLAN tag.

Procedures

Configuring PE A

1. Create VLANs 1000 and 2000.

<PE_A> system-view

[PE_A] vlan 1000

[PE_A-vlan1000] quit

[PE_A] vlan 2000

[PE_A-vlan2000] quit

2. Configure Twenty-FiveGigE 1/0/1:

# Configure the port as an access port, and assign the port to VLAN 1000.

[PE_A] interface twenty-fivegige 1/0/1

[PE_A-Twenty-FiveGigE1/0/1] port access vlan 1000

# Enable QinQ on the port.

[PE_A-Twenty-FiveGigE1/0/1] qinq enable

[PE_A-Twenty-FiveGigE1/0/1] quit

3. Configure Twenty-FiveGigE 1/0/2:

# Configure the port as an access port, and assign the port to VLAN 2000.

[PE_A] interface twenty-fivegige 1/0/2

[PE_A-Twenty-FiveGigE1/0/2] port access vlan 2000

# Enable QinQ on the port.

[PE_A-Twenty-FiveGigE1/0/2] qinq enable

[PE_A-Twenty-FiveGigE1/0/2] quit

4. Configure Twenty-FiveGigE 1/0/3:

# Configure the port as a trunk port.

[PE_A] interface twenty-fivegige 1/0/3

[PE_A-Twenty-FiveGigE1/0/3] port link-type trunk

# Assign the port to VLANs 1000 and 2000.

[PE_A-Twenty-FiveGigE1/0/3] port trunk permit vlan 1000 2000

# Remove the port from VLAN 1.

[PE_A-Twenty-FiveGigE1/0/3] undo port trunk permit vlan 1

[PE_A-Twenty-FiveGigE1/0/3] quit

Configuring PE B

1. Create VLANs 1000 and 2000.

<PE_B> system-view

[PE_B] vlan 1000

[PE_B-vlan1000] quit

[PE_B] vlan 2000

[PE_B-vlan2000] quit

2. Configure Twenty-FiveGigE 1/0/1:

# Configure the port as an access port, and assign the port to VLAN 2000.

[PE_B] interface twenty-fivegige 1/0/1

[PE_B-Twenty-FiveGigE1/0/1] port access vlan 2000

# Enable QinQ on the port.

[PE_B-Twenty-FiveGigE1/0/1] qinq enable

[PE_B-Twenty-FiveGigE1/0/1] quit

3. Configure Twenty-FiveGigE 1/0/2:

# Configure the port as an access port, and assign the port to VLAN 1000.

[PE_B] interface twenty-fivegige 1/0/2

[PE_B-Twenty-FiveGigE1/0/2] port access vlan 1000

# Enable QinQ on the port.

[PE_B-Twenty-FiveGigE1/0/2] qinq enable

[PE_B-Twenty-FiveGigE1/0/2] quit

4. Configure Twenty-FiveGigE 1/0/3:

# Configure the port as a trunk port.

[PE_B] interface twenty-fivegige 1/0/3

[PE_B-Twenty-FiveGigE1/0/3] port link-type trunk

# Assign the port to VLANs 1000 and 2000.

[PE_B-Twenty-FiveGigE1/0/3] port trunk permit vlan 1000 2000

# Remove the port from VLAN 1.

[PE_B-Twenty-FiveGigE1/0/3] undo port trunk permit vlan 1

[PE_B-Twenty-FiveGigE1/0/3] quit

Configuring devices between PE A and PE B

# Set the MTU to a minimum of 1504 bytes for each port on the path of QinQ frames. (Details not shown.)

# Configure all ports on the forwarding path to allow frames from VLANs 1000 and 2000 to pass through without removing the VLAN tag. (Details not shown.)

Verifying the configuration

# Verify that each company's PCs can ping each other in the same CVLAN across the service provider network. (Details not shown.)

# Verify that the two companies' PCs cannot communicate at Layer 2 even if their CVLAN IDs are the same. The ARP tables on one company's PCs do not contain entries for MAC addresses of the other company's PCs. (Details not shown.)

Configuration files

· PE A:

vlan 1000

vlan 2000

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port access vlan 1000

qinq enable

interface Twenty-FiveGigE1/0/2

port link-mode bridge

port access vlan 2000

qinq enable

interface Twenty-FiveGigE1/0/3

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 1000 2000

· PE B:

vlan 1000

vlan 2000

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port access vlan 2000

qinq enable

interface Twenty-FiveGigE1/0/2

port link-mode bridge

port access vlan 1000

qinq enable

interface Twenty-FiveGigE1/0/3

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 1000 2000

Example: Configuring one-to-two VLAN mapping

Network configuration

As shown in Figure 4:

· Customer A and Customer B each have two branches that require Layer 2 connectivity over the service provider network.

· Both customers have three types of traffic. For each customer, the service provider assigns one SVLAN by traffic type.

Configure one-to-two VLAN mapping on each customer-side port of PE A and PE B to meet the following requirements:

· The service provider adds an SVLAN tag to packets from customer networks based on the traffic type, as described in Table 2 and Figure 5.

· The SVLAN tag uses the same 802.1p priority as the CVLAN tag.

Figure 4 Network diagram

Table 2 VLAN mapping table

Traffic type	CVLANs	SVLAN
Customer A
Video	31 to 40	1003
Voice	21 to 30	1002
Data	10 to 20	1001
Customer B
Storage	36 to 40	2003
Voice	26 to 35	2002
Data	15 to 25	2001

Figure 5 Required traffic pattern in the service provider network

Analysis

To support multiple SVLANs and send traffic to the customer networks with the SVLAN tag removed, perform the following tasks on the customer-side ports:

1. Configure the link type of the ports as hybrid.

2. Assign the ports to the SVLANs as untagged VLAN members.

For the SVLAN tag to use the same 802.1p priority as the CVLAN tag, configure the customer-side port to use the 802.1p priority in incoming packets for priority mapping.

Applicable hardware and software versions

The following matrix shows the hardware and software versions to which this configuration example is applicable:

Hardware	Software version
S6550X-HI switch series	Release 1213P51 and later
S6880 switch series	Release 1213P51 and later
S9820-8M	Release 1213P51 and later
S5580X-HI switch series	Release 1213P50 and later
S5580X-EI switch series	Release 1213P50 and later
S5580S-EI switch series	Release 1213P50 and later

Restrictions and guidelines

When you configure ports on the forwarding path of double-tagged packets across the service provider network, follow these restrictions and guidelines:

· Set the MTU to a minimum of 1504 bytes for each port.

· Configure all ports to allow double-tagged packets to pass through without removing the SVLAN tag.

Procedures

Configuring PE A

1. Create CVLANs and SVLANs:

# Create CVLANs 10 to 40.

<PE_A> system-view

[PE_A] vlan 10 to 40

# Create SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_A] vlan 1001 to 1003

[PE_A] vlan 2001 to 2003

2. Configure the customer-side port Twenty-FiveGigE 1/0/1:

# Configure the port as a hybrid port.

[PE_A] interface twenty-fivegige 1/0/1

[PE_A-Twenty-FiveGigE1/0/1] port link-type hybrid

# Assign the port to CVLANs 10 through 40 as a tagged VLAN member.

[PE_A-Twenty-FiveGigE1/0/1] port hybrid vlan 10 to 40 tagged

# Assign the port to SVLANs 1001 through 1003 as an untagged VLAN member.

[PE_A-Twenty-FiveGigE1/0/1] port hybrid vlan 1001 to 1003 untagged

# Remove the port from VLAN 1.

[PE_A-Twenty-FiveGigE1/0/1] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping to add SVLAN tag 1001 to traffic from VLANs 10 through 20.

[PE_A-Twenty-FiveGigE1/0/1] vlan mapping nest range 10 to 20 nested-vlan 1001

# Configure one-to-two VLAN mapping to add SVLAN tag 1002 to traffic from VLANs 21 through 30.

[PE_A-Twenty-FiveGigE1/0/1] vlan mapping nest range 21 to 30 nested-vlan 1002

# Configure one-to-two VLAN mapping to add SVLAN tag 1003 to traffic from VLANs 31 through 40.

[PE_A-Twenty-FiveGigE1/0/1] vlan mapping nest range 31 to 40 nested-vlan 1003

# Configure the port to use the 802.1p priority in incoming packets for priority mapping.

[PE_A-Twenty-FiveGigE1/0/1] qos trust dot1p

[PE_A-Twenty-FiveGigE1/0/1] quit

3. Configure the customer-side port Twenty-FiveGigE 1/0/2:

# Configure the port as a hybrid port.

[PE_A] interface twenty-fivegige 1/0/2

[PE_A-Twenty-FiveGigE1/0/2] port link-type hybrid

# Assign the port to CVLANs 15 through 40 as a tagged VLAN member.

[PE_A-Twenty-FiveGigE1/0/2] port hybrid vlan 15 to 40 tagged

# Assign the port to SVLANs 2001 through 2003 as an untagged VLAN member.

[PE_A-Twenty-FiveGigE1/0/2] port hybrid vlan 2001 to 2003 untagged

# Remove the port from VLAN 1.

[PE_A-Twenty-FiveGigE1/0/2] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping to add SVLAN tag 2001 to traffic from VLANs 15 through 25.

[PE_A-Twenty-FiveGigE1/0/2] vlan mapping nest range 15 to 25 nested-vlan 2001

# Configure one-to-two VLAN mapping to add SVLAN tag 2002 to traffic from VLANs 26 through 35.

[PE_A-Twenty-FiveGigE1/0/2] vlan mapping nest range 26 to 35 nested-vlan 2002

# Configure one-to-two VLAN mapping to add SVLAN tag 2003 to traffic from VLANs 36 through 40.

[PE_A-Twenty-FiveGigE1/0/2] vlan mapping nest range 36 to 40 nested-vlan 2003

# Configure the port to use the 802.1p priority in incoming packets for priority mapping.

[PE_A-Twenty-FiveGigE1/0/2] qos trust dot1p

[PE_A-Twenty-FiveGigE1/0/2] quit

4. Configure the service provider-side port Twenty-FiveGigE 1/0/3:

# Configure the port as a trunk port.

[PE_A] interface twenty-fivegige 1/0/3

[PE_A-Twenty-FiveGigE1/0/3] port link-type trunk

# Remove the port from VLAN 1.

[PE_A-Twenty-FiveGigE1/0/3] undo port trunk permit vlan 1

# Assign the port to SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_A-Twenty-FiveGigE1/0/3] port trunk permit vlan 1001 to 1003 2001 to 2003

[PE_A-Twenty-FiveGigE1/0/3] quit

Configuring PE B

1. Create CVLANs and SVLANs:

# Create CVLANs 10 to 40.

<PE_B> system-view

[PE_B] vlan 10 to 40

# Create SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_B] vlan 1001 to 1003

[PE_B] vlan 2001 to 2003

2. Configure the customer-side port Twenty-FiveGigE 1/0/1:

# Configure the port as a hybrid port.

[PE_B] interface twenty-fivegige 1/0/1

[PE_B-Twenty-FiveGigE1/0/1] port link-type hybrid

# Assign the port to CVLANs 15 through 40 as a tagged VLAN member.

[PE_B-Twenty-FiveGigE1/0/1] port hybrid vlan 15 to 40 tagged

# Assign the port to SVLANs 2001 through 2003 as an untagged VLAN member.

[PE_B-Twenty-FiveGigE1/0/1] port hybrid vlan 2001 to 2003 untagged

# Remove the port from VLAN 1.

[PE_B-Twenty-FiveGigE1/0/1] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping to add SVLAN tag 2001 to traffic from VLANs 15 through 25.

[PE_B-Twenty-FiveGigE1/0/1] vlan mapping nest range 15 to 25 nested-vlan 2001

# Configure one-to-two VLAN mapping to add SVLAN tag 2002 to traffic from VLANs 26 through 35.

[PE_B-Twenty-FiveGigE1/0/1] vlan mapping nest range 26 to 35 nested-vlan 2002

# Configure one-to-two VLAN mapping to add SVLAN tag 2003 to traffic from VLANs 36 through 40.

[PE_B-Twenty-FiveGigE1/0/1] vlan mapping nest range 36 to 40 nested-vlan 2003

# Configure the port to use the 802.1p priority in incoming packets for priority mapping.

[PE_B-Twenty-FiveGigE1/0/1] qos trust dot1p

[PE_B-Twenty-FiveGigE1/0/1] quit

3. Configure the customer-side port Twenty-FiveGigE 1/0/2:

# Configure the port as a hybrid port.

[PE_B] interface twenty-fivegige 1/0/2

[PE_B-Twenty-FiveGigE1/0/2] port link-type hybrid

# Assign the port to CVLANs 10 through 40 as a tagged VLAN member.

[PE_B-Twenty-FiveGigE1/0/2] port hybrid vlan 10 to 40 tagged

# Assign the port to SVLANs 1001 through 1003 as an untagged VLAN member.

[PE_B-Twenty-FiveGigE1/0/2] port hybrid vlan 1001 to 1003 untagged

# Remove the port from VLAN 1.

[PE_B-Twenty-FiveGigE1/0/2] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping to add SVLAN tag 1001 to traffic from VLANs 10 through 20.

[PE_B-Twenty-FiveGigE1/0/2] vlan mapping nest range 10 to 20 nested-vlan 1001

# Configure one-to-two VLAN mapping to add SVLAN tag 1002 to traffic from VLANs 21 through 30.

[PE_B-Twenty-FiveGigE1/0/2] vlan mapping nest range 21 to 30 nested-vlan 1002

# Configure one-to-two VLAN mapping to add SVLAN tag 1003 to traffic from VLANs 31 through 40.

[PE_B-Twenty-FiveGigE1/0/2] vlan mapping nest range 31 to 40 nested-vlan 1003

# Configure the port to use the 802.1p priority in incoming packets for priority mapping.

[PE_B-Twenty-FiveGigE1/0/2] qos trust dot1p

[PE_B-Twenty-FiveGigE1/0/2] quit

4. Configure the service provider-side port Twenty-FiveGigE 1/0/3:

# Configure the port as a trunk port.

[PE_B] interface twenty-fivegige 1/0/3

[PE_B-Twenty-FiveGigE1/0/3] port link-type trunk

# Remove the port from VLAN 1.

[PE_B-Twenty-FiveGigE1/0/3] undo port trunk permit vlan 1

# Assign the port to SVLANs 1001 through 1003 and SVLANs 2001 through 2003.

[PE_B-Twenty-FiveGigE1/0/3] port trunk permit vlan 1001 to 1003 2001 to 2003

[PE_B-Twenty-FiveGigE1/0/3] quit

Configuring devices between PE A and PE B

# Set the MTU to a minimum of 1504 bytes for each port on the path of double-tagged packets. (Details not shown.)

# Configure all ports on the forwarding path to allow packets from VLANs 1001 through 1003 and VLANs 2001 through 2003 to pass through without removing the SVLAN tag. (Details not shown.)

Verifying the configuration

1. Verify VLAN mapping information:

# Verify VLAN mapping information on PE A.

[PE_A] display vlan mapping

Interface Twenty-FiveGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

10-20 N/A 1001 10-20

21-30 N/A 1002 21-30

31-40 N/A 1003 31-40

Interface Twenty-FiveGigE1/0/2:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

15-25 N/A 2001 15-25

26-35 N/A 2002 26-35

36-40 N/A 2003 36-40

# Verify VLAN mapping information on PE B.

[PE_B] display vlan mapping

Interface Twenty-FiveGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

15-25 N/A 2001 15-25

26-35 N/A 2002 26-35

36-40 N/A 2003 36-40

Interface Twenty-FiveGigE1/0/2:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

10-20 N/A 1001 10-20

21-30 N/A 1002 21-30

31-40 N/A 1003 31-40

2. Verify that PCs of the same customer in a CVLAN can ping each other across the service provider network. (Details not shown.)

3. Verify that PCs of different customers in a CVLAN cannot communicate at Layer 2. The ARP tables on one customer's PCs do not contain entries for MAC addresses of the other customer's PCs. (Details not shown.)

Configuration files

· PE A:

vlan 10 to 40

vlan 1001 to 1003

vlan 2001 to 2003

interface Twenty-FiveGigE1/0/1

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 10 to 40 tagged

port hybrid vlan 1001 to 1003 untagged

vlan mapping nest range 10 to 20 nested-vlan 1001

vlan mapping nest range 21 to 30 nested-vlan 1002

vlan mapping nest range 31 to 40 nested-vlan 1003

qos trust dot1p

interface Twenty-FiveGigE1/0/2

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 15 to 40 tagged

port hybrid vlan 2001 to 2003 untagged

vlan mapping nest range 15 to 25 nested-vlan 2001

vlan mapping nest range 26 to 35 nested-vlan 2002

vlan mapping nest range 36 to 40 nested-vlan 2003

qos trust dot1p

interface Twenty-FiveGigE1/0/3

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 1001 to 1003 2001 to 2003

· PE B:

vlan 10 to 40

vlan 1001 to 1003

vlan 2001 to 2003

interface Twenty-FiveGigE1/0/1

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 15 to 40 tagged

port hybrid vlan 2001 to 2003 untagged

vlan mapping nest range 15 to 25 nested-vlan 2001

vlan mapping nest range 26 to 35 nested-vlan 2002

vlan mapping nest range 36 to 40 nested-vlan 2003

qos trust dot1p

interface Twenty-FiveGigE1/0/2

port link-type hybrid

undo port hybrid vlan 1

port hybrid vlan 10 to 40 tagged

port hybrid vlan 1001 to 1003 untagged

vlan mapping nest range 10 to 20 nested-vlan 1001

vlan mapping nest range 21 to 30 nested-vlan 1002

vlan mapping nest range 31 to 40 nested-vlan 1003

qos trust dot1p

interface Twenty-FiveGigE1/0/3

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 1001 to 1003 2001 to 2003

Example: Configuring one-to-one VLAN mapping

Network configuration

As shown in Figure 6:

· Each household subscribes to PC, VoD, and VoIP services, and obtains the IP address through DHCP.

· On the home gateways, PC, VoD, and VoIP service traffic is assigned to VLANs 1, 2, and 3, respectively.

To isolate traffic of the same service type from different households, configure one-to-one VLAN mapping on the wiring-closet switches. This feature assigns one VLAN to each type of traffic from each household.

Figure 6 Network diagram

Applicable hardware and software versions

The following matrix shows the hardware and software versions to which this configuration example is applicable:

Hardware	Software version
S6550X-HI switch series	Release 1213P51 and later
S6880 switch series	Release 1213P51 and later
S9820-8M	Release 1213P51 and later
S5580X-HI switch series	Release 1213P50 and later
S5580X-EI switch series	Release 1213P50 and later
S5580S-EI switch series	Release 1213P50 and later

Procedures

Configuring Switch A

# Create the original VLANs 2 and 3. (VLAN 1 is the system default VLAN and already exists.)

<SwitchA> system-view

[SwitchA] vlan 2 to 3

# Create the translated VLANs 101 through 102, 201 through 202, and 301 through 302.

[SwitchA] vlan 101 to 102

[SwitchA] vlan 201 to 202

[SwitchA] vlan 301 to 302

# Configure the customer-side port Twenty-FiveGigE 1/0/1 as a trunk port.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] port link-type trunk

# Assign Twenty-FiveGigE 1/0/1 to the original VLANs and translated VLANs.

[SwitchA-Twenty-FiveGigE1/0/1] port trunk permit vlan 1 2 3 101 201 301

# Configure one-to-one VLAN mapping on Twenty-FiveGigE 1/0/1 to map VLANs 1, 2, and 3 to VLANs 101, 201, and 301, respectively.

[SwitchA-Twenty-FiveGigE1/0/1] vlan mapping 1 translated-vlan 101

[SwitchA-Twenty-FiveGigE1/0/1] vlan mapping 2 translated-vlan 201

[SwitchA-Twenty-FiveGigE1/0/1] vlan mapping 3 translated-vlan 301

[SwitchA-Twenty-FiveGigE1/0/1] quit

# Configure the customer-side port Twenty-FiveGigE 1/0/2 as a trunk port.

[SwitchA] interface twenty-fivegige 1/0/2

[SwitchA-Twenty-FiveGigE1/0/2] port link-type trunk

# Assign Twenty-FiveGigE 1/0/2 to the original VLANs and translated VLANs.

[SwitchA-Twenty-FiveGigE1/0/2] port trunk permit vlan 1 2 3 102 202 302

# Configure one-to-one VLAN mapping on Twenty-FiveGigE 1/0/2 to map VLANs 1, 2, and 3 to VLANs 102, 202, and 302, respectively.

[SwitchA-Twenty-FiveGigE1/0/2] vlan mapping 1 translated-vlan 102

[SwitchA-Twenty-FiveGigE1/0/2] vlan mapping 2 translated-vlan 202

[SwitchA-Twenty-FiveGigE1/0/2] vlan mapping 3 translated-vlan 302

[SwitchA-Twenty-FiveGigE1/0/2] quit

# Configure the network-side port Twenty-FiveGigE 1/0/3 as a trunk port.

[SwitchA] interface twenty-fivegige 1/0/3

[SwitchA-Twenty-FiveGigE1/0/3] port link-type trunk

# Assign Twenty-FiveGigE 1/0/3 to the translated VLANs.

[SwitchA-Twenty-FiveGigE1/0/3] undo port trunk permit vlan 1

[SwitchA-Twenty-FiveGigE1/0/3] port trunk permit vlan 101 201 301 102 202 302

[SwitchA-Twenty-FiveGigE1/0/3] quit

Configuring Switch B

# Configure Switch B in the same way Switch A is configured. (Details not shown.)

Verifying the configuration

# Verify VLAN mapping information on Switch A.

[SwitchA] display vlan mapping

Interface Twenty-FiveGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

1 N/A 101 N/A

2 N/A 201 N/A

3 N/A 301 N/A

Interface Twenty-FiveGigE1/0/2:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

1 N/A 102 N/A

2 N/A 202 N/A

3 N/A 302 N/A

# Verify VLAN mapping information on Switch B in the same way as Switch A. (Details not shown.)

Configuration files

· Switch A:

vlan 1

vlan 2 to 3

vlan 101 to 102

vlan 201 to 202

vlan 301 to 302

interface Twenty-FiveGigE1/0/1

port link-type trunk

port trunk permit vlan 1 to 3 101 201 301

vlan mapping 1 translated-vlan 101

vlan mapping 2 translated-vlan 201

vlan mapping 3 translated-vlan 301

interface Twenty-FiveGigE1/0/2

port link-type trunk

port trunk permit vlan 1 to 3 102 202 302

vlan mapping 1 translated-vlan 102

vlan mapping 2 translated-vlan 202

vlan mapping 3 translated-vlan 302

interface Twenty-FiveGigE1/0/3

port link-type trunk

port trunk permit vlan 1 101 to 102 201 to 202 301 to 302

· Switch B:

vlan 1

vlan 2 to 3

vlan 103 to 104

vlan 203 to 204

vlan 303 to 304

interface Twenty-FiveGigE1/0/1

port link-type trunk

port trunk permit vlan 1 to 3 103 203 303

vlan mapping 1 translated-vlan 103

vlan mapping 2 translated-vlan 203

vlan mapping 3 translated-vlan 303

interface Twenty-FiveGigE1/0/2

port link-type trunk

port trunk permit vlan 1 to 3 104 204 304

vlan mapping 1 translated-vlan 104

vlan mapping 2 translated-vlan 204

vlan mapping 3 translated-vlan 304

interface Twenty-FiveGigE1/0/3

port link-type trunk

port trunk permit vlan 1 103 to 104 203 to 204 303 to 304

Example: Configuring many-to-one VLAN mapping

As shown in Figure 7, the wiring-closet switch isolates similar services of different household users by dividing VLAN 2 to 4. On the campus switch, to save VLAN resources, different household users' similar services are mapped to the same VLAN through many-to-one VLAN mapping. All household users' similar services are mapped to VLAN 10 for processing.

Figure 7 Network diagram

Applicable hardware and software versions

The following matrix shows the hardware and software versions to which this configuration example is applicable:

Hardware	Software version
S6550X-HI switch series	Release 1213P51 and later
S6880 switch series	Release 1213P51 and later
S9820-8M	Release 1213P51 and later
S5580X-HI switch series	Release 1213P50 and later
S5580X-EI switch series	Release 1213P50 and later
S5580S-EI switch series	Release 1213P50 and later

Procedures

Configuring Switch A

# Create the original VLAN 2.

<SwitchA> system-view

[SwitchA] vlan 2

# Assign Twenty-FiveGigE 1/0/1 and Twenty-FiveGigE 1/0/1 to VLAN 2.

[SwitchA] interface range twenty-fivegige 1/0/1 to twenty-fivegige 1/0/2

[SwitchA-if-range] port access vlan 2

Configuring Switch B and Switch C

# Configure Switch B and Switch C in the same way Switch A is configured. (Details not shown.)

Configuring Switch D

# Create the original VLANs 2 and 4.

[SwitchD] vlan 2 to 4

# Assign Twenty-FiveGigE 1/0/1 to VLAN 2, assign Twenty-FiveGigE 1/0/2 to VLAN 3, and assign Twenty-FiveGigE 1/0/3 to VLAN 4.

[SwitchD] interface ten-twenty-fivegige 1/0/1

[SwitchD-Twenty-FiveGigE1/0/1] port access vlan 2

[SwitchD-Twenty-FiveGigE1/0/1] quit

[SwitchD] interface ten-twenty-fivegige 1/0/2

[SwitchD-Twenty-FiveGigE1/0/2] port access vlan 3

[SwitchD-Twenty-FiveGigE1/0/2] quit

[SwitchD] interface ten-twenty-fivegige 1/0/3

[SwitchD-Twenty-FiveGigE1/0/3] port access vlan 4

[SwitchD-Twenty-FiveGigE1/0/3] quit

# Configure Twenty-FiveGigE 1/0/4 as a trunk port.

[SwitchD] interface ten-twenty-fivegige 1/0/4

[SwitchD-Twenty-FiveGigE1/0/4] port link-type trunk

# Assign Twenty-FiveGigE 1/0/4 to the original VLANs and translated VLANs.

[SwitchD-Twenty-FiveGigE1/0/4] port trunk permit vlan 2 to 4

Configuring Switch E

# Configure Twenty-FiveGigE 1/0/1 as a trunk port.

[SwitchE] interface ten-twenty-fivegige 1/0/1

[SwitchE-Twenty-FiveGigE1/0/1] port link-type trunk

# Assign Twenty-FiveGigE 1/0/1 to the original VLANs and translated VLANs.

[SwitchE-Twenty-FiveGigE1/0/1] port trunk permit vlan 2 to 4

# Configure many-to-one VLAN mapping on Twenty-FiveGigE 1/0/1 to map VLANs 2, 3, and 4 to VLAN 10.

[SwitchE-Twenty-FiveGigE1/0/1] vlan mapping uni range 2 to 4 translated-vlan 10

Verifying the configuration

# Verify VLAN mapping information on Switch E.

[SwitchE] display vlan mapping

Interface Twenty-FiveGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

2-4 N/A 10 N/A

Configuration files

· Switch A:

vlan 1

vlan 2

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port access vlan 2

interface Twenty-FiveGigE1/0/2

port link-mode bridge

port access vlan 2

· Switch B:

vlan 1

vlan 3

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port access vlan 3

interface Twenty-FiveGigE1/0/2

port link-mode bridge

port access vlan 3

· Switch C:

vlan 1

vlan 4

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port access vlan 4

interface Twenty-FiveGigE1/0/2

port link-mode bridge

port access vlan 4

· Switch D:

vlan 1

vlan 2 to 4

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port access vlan 2

interface Twenty-FiveGigE1/0/2

port link-mode bridge

port access vlan 3

interface Twenty-FiveGigE1/0/3

port link-mode bridge

port access vlan 4

interface Twenty-FiveGigE1/0/4

port link-mode bridge

port link-type trunk

port trunk permit vlan 1 to 4

· Switch E:

vlan 1

vlan 2 to 4

interface Twenty-FiveGigE1/0/1

port link-mode bridge

port link-type trunk

port trunk permit vlan 1 to 4

vlan mapping uni range 2 to 4 translated-vlan 10

Example: Configuring two-to-two VLAN mapping

Network configuration

As shown in Figure 8:

· A company assigns its branch sites (Site 1 and Site 2) to VLAN 10, and the headquarters provides services in VLAN 30.

· Service provider A uses SVLAN 100 to transmit VLAN 10 traffic for the branch sites.

· Service provider B uses SVLAN 200 to transmit VLAN 30 traffic for the headquarters.

Configure two-to-two VLAN mapping to permit the two branch sites to access VLAN 30 of the headquarters without changing their VLAN assignment.

Figure 8 Network diagram

Applicable hardware and software versions

The following matrix shows the hardware and software versions to which this configuration example is applicable:

Hardware	Software version
S6550X-HI switch series	Release 1213P51 and later
S6880 switch series	Release 1213P51 and later
S9820-8M	Release 1213P51 and later
S5580X-HI switch series	Release 1213P50 and later
S5580X-EI switch series	Release 1213P50 and later
S5580S-EI switch series	Release 1213P50 and later

Restrictions and guidelines

Configure two-to-two VLAN mapping on one of the edge devices between the two service provider networks. This example uses Switch C.

Procedures

Configuring Switch A

# Create CVLAN 10 and SVLAN 100.

<SwitchA> system-view

[SwitchA] vlan 10

[SwitchA-vlan10] quit

[SwitchA] vlan 100

[SwitchA-vlan100] quit

# Configure a one-to-two VLAN mapping on the customer-side port (Twenty-FiveGigE 1/0/1) to add SVLAN tag 100 to packets from VLAN 10.

[SwitchA] interface twenty-fivegige 1/0/1

[SwitchA-Twenty-FiveGigE1/0/1] vlan mapping nest single 10 nested-vlan 100

# Configure Twenty-FiveGigE 1/0/1 as a hybrid port.

[SwitchA-Twenty-FiveGigE1/0/1] port link-type hybrid

# Assign Twenty-FiveGigE 1/0/1 to VLAN 10 as a tagged member.

[SwitchA-Twenty-FiveGigE1/0/1] port hybrid vlan 10 tagged

# Assign Twenty-FiveGigE 1/0/1 to VLAN 100 as an untagged member.

[SwitchA-Twenty-FiveGigE1/0/1] port hybrid vlan 100 untagged

# Remove Twenty-FiveGigE 1/0/1 from VLAN 1.

[SwitchA-Twenty-FiveGigE1/0/1] undo port hybrid vlan 1

[SwitchA-Twenty-FiveGigE1/0/1] quit

# Configure the network-side port Twenty-FiveGigE 1/0/2 as a trunk port.

[SwitchA] interface twenty-fivegige 1/0/2

[SwitchA-Twenty-FiveGigE1/0/2] port link-type trunk

# Assign Twenty-FiveGigE 1/0/2 to VLAN 100.

[SwitchA-Twenty-FiveGigE1/0/2] port trunk permit vlan 100

# Remove Twenty-FiveGigE 1/0/2 from VLAN 1.

[SwitchA-Twenty-FiveGigE1/0/2] undo port trunk permit vlan 1

[SwitchA-Twenty-FiveGigE1/0/2] quit

Configuring Switch B

# Create CVLAN 10 and SVLAN 100.

<SwitchB> system-view

[SwitchB] vlan 10

[SwitchB-vlan10] quit

[SwitchB] vlan 100

[SwitchB-vlan100] quit

# Configure a one-to-two VLAN mapping on the customer-side port (Twenty-FiveGigE 1/0/3) to add SVLAN tag 100 to packets from VLAN 10.

[SwitchB] interface twenty-fivegige 1/0/3

[SwitchB-Twenty-FiveGigE1/0/3] vlan mapping nest single 10 nested-vlan 100

# Configure Twenty-FiveGigE 1/0/3 as a hybrid port.

[SwitchB] interface twenty-fivegige 1/0/3

[SwitchB-Twenty-FiveGigE1/0/3] port link-type hybrid

# Assign Twenty-FiveGigE 1/0/3 to VLAN 10 as a tagged member.

[SwitchB-Twenty-FiveGigE1/0/3] port hybrid vlan 10 tagged

# Assign Twenty-FiveGigE 1/0/3 to VLAN 100 as an untagged member.

[SwitchB-Twenty-FiveGigE1/0/3] port hybrid vlan 100 untagged

# Remove Twenty-FiveGigE 1/0/3 from VLAN 1.

[SwitchB-Twenty-FiveGigE1/0/3] undo port hybrid vlan 1

[SwitchB-Twenty-FiveGigE1/0/3] quit

# Configure Twenty-FiveGigE 1/0/1 as a trunk port.

[SwitchB] interface twenty-fivegige 1/0/1

[SwitchB-Twenty-FiveGigE1/0/1] port link-type trunk

# Assign Twenty-FiveGigE 1/0/1 to VLAN 100.

[SwitchB-Twenty-FiveGigE1/0/1] port trunk permit vlan 100

# Remove Twenty-FiveGigE 1/0/1 from VLAN 1.

[SwitchB-Twenty-FiveGigE1/0/1] undo port trunk permit vlan 1

[SwitchB-Twenty-FiveGigE1/0/1] quit

# Configure Twenty-FiveGigE 1/0/2 as a trunk port.

[SwitchB] interface twenty-fivegige 1/0/2

[SwitchB-Twenty-FiveGigE1/0/2] port link-type trunk

# Assign Twenty-FiveGigE 1/0/2 to VLAN 100.

[SwitchB-Twenty-FiveGigE1/0/2] port trunk permit vlan 100

# Remove Twenty-FiveGigE 1/0/2 from VLAN 1.

[SwitchB-Twenty-FiveGigE1/0/2] undo port trunk permit vlan 1

[SwitchB-Twenty-FiveGigE1/0/2] quit

Configuring Switch C

# Create SVLANs 100 and 200.

<SwitchC> system-view

[SwitchC] vlan 100

[SwitchC-vlan100] quit

[SwitchC] vlan 200

[SwitchC-vlan200] quit

# Configure Twenty-FiveGigE 1/0/1 as a trunk port.

[SwitchC] interface twenty-fivegige 1/0/1

[SwitchC-Twenty-FiveGigE1/0/1] port link-type trunk

# Assign Twenty-FiveGigE 1/0/1 to VLANs 100 to 200.

[SwitchC-Twenty-FiveGigE1/0/1] port trunk permit vlan 100 200

# Remove Twenty-FiveGigE 1/0/1 from VLAN 1.

[SwitchC-Twenty-FiveGigE1/0/1] undo port trunk permit vlan 1

# Configure a two-to-two VLAN mapping on Twenty-FiveGigE 1/0/1 to map SVLAN 100 and CVLAN 10 to SVLAN 200 and CVLAN 30.

[SwitchC-Twenty-FiveGigE1/0/1] vlan mapping tunnel 100 10 translated-vlan 200 30

[SwitchC-Twenty-FiveGigE1/0/1] quit

# Configure Twenty-FiveGigE 1/0/2 as a trunk port.

[SwitchC] interface twenty-fivegige 1/0/2

[SwitchC-Twenty-FiveGigE1/0/2] port link-type trunk

# Assign Twenty-FiveGigE 1/0/2 to VLAN 200.

[SwitchC-Twenty-FiveGigE1/0/2] port trunk permit vlan 200

# Remove Twenty-FiveGigE 1/0/2 from VLAN 1.

[SwitchC-Twenty-FiveGigE1/0/2] undo port trunk permit vlan 1

[SwitchC-Twenty-FiveGigE1/0/2] quit

Configuring Switch D

# Create CVLAN 30 and SVLAN 200.

<SwitchD> system-view

[SwitchD] vlan 30

[SwitchD-vlan30] quit

[SwitchD] vlan 200

[SwitchD-vlan200] quit

# Configure the link type of Twenty-FiveGigE 1/0/1 as trunk.

[SwitchD] interface twenty-fivegige 1/0/1

[SwitchD-Twenty-FiveGigE1/0/1] port link-type trunk

# Assign Twenty-FiveGigE 1/0/1 to VLAN 200.

[SwitchD-Twenty-FiveGigE1/0/1] port trunk permit vlan 200

# Remove Twenty-FiveGigE 1/0/1 from VLAN 1.

[SwitchD-Twenty-FiveGigE1/0/1] undo port trunk permit vlan 1

[SwitchD-Twenty-FiveGigE1/0/1] quit

# Configure Twenty-FiveGigE 1/0/2 as a hybrid port.

[SwitchD] interface twenty-fivegige 1/0/2

[SwitchD-Twenty-FiveGigE1/0/2] port link-type hybrid

# Assign Twenty-FiveGigE 1/0/2 to VLAN 30 as a tagged member.

[SwitchD-Twenty-FiveGigE1/0/2] port hybrid vlan 30 tagged

# Assign Twenty-FiveGigE 1/0/2 to VLAN 200 as an untagged member.

[SwitchD-Twenty-FiveGigE1/0/2] port hybrid vlan 200 untagged

# Remove Twenty-FiveGigE 1/0/2 from VLAN 1.

[SwitchD-Twenty-FiveGigE1/0/2] undo port hybrid vlan 1

[SwitchD-Twenty-FiveGigE1/0/2] quit

# Configure a one-to-two VLAN mapping on the customer-side port (Twenty-FiveGigE 1/0/2) to add SVLAN tag 200 to packets from VLAN 30.

[SwitchD] interface twenty-fivegige 1/0/2

[SwitchD-Twenty-FiveGigE1/0/2] vlan mapping nest single 30 nested-vlan 200

[SwitchD-Twenty-FiveGigE1/0/2] quit

Verifying the configuration

# Verify VLAN mapping information on Switch C.

[SwitchC] display vlan mapping

Interface Twenty-FiveGigE1/0/1:

Outer VLAN Inner VLAN Translated Outer VLAN Translated Inner VLAN

100 10 200 30

Configuration files

· Switch A:

vlan 10

vlan 100

interface Twenty-FiveGigE1/0/1

port link-type hybrid

port hybrid vlan 10 tagged

port hybrid vlan 100 untagged

vlan mapping nest single 10 nested-vlan 100

interface Twenty-FiveGigE1/0/2

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 100

· Switch B:

vlan 10

vlan 100

interface Twenty-FiveGigE1/0/1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 100

interface Twenty-FiveGigE1/0/2

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 100

interface Twenty-FiveGigE1/0/3

port link-type hybrid

port hybrid vlan 10 tagged

port hybrid vlan 100 untagged

vlan mapping nest single 10 nested-vlan 100

· Switch C:

vlan 100

vlan 200

interface Twenty-FiveGigE1/0/1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 100 200

vlan mapping tunnel 100 10 translated-vlan 200 30

interface Twenty-FiveGigE1/0/2

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 200

· Switch D:

vlan 30

vlan 200

interface Twenty-FiveGigE1/0/1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 200

interface Twenty-FiveGigE1/0/2

port link-type hybrid

port hybrid vlan 30 tagged

port hybrid vlan 200 untagged

vlan mapping nest single 30 nested-vlan 200

02-Layer 2—LAN Switching Configuration Examples

Example: Configuring QoS policies for SVLAN tagging

Example: Configuring QinQ

Example: Configuring one-to-one VLAN mapping

Configuring Switch D

Configuring Switch E

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