03-Layer 2 - LAN Switching Configuration Examples

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08-H3C_VLAN_Mapping_Configuration_Examples
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H3C VLAN Mapping Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Software version: Release 7585P05

Document version: 6W100-20200330

 

Copyright © 2020 New H3C Technologies Co., Ltd. All rights reserved.

No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of New H3C Technologies Co., Ltd.

Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this document are the property of their respective owners.

The information in this document is subject to change without notice.



Introduction

This document provides examples of adding or modifying VLAN tags by using VLAN mapping.

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 H3C VLAN mapping.

Example: Configuring one-to-two VLAN mapping

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.

·     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 1 and Figure 2.

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

Figure 1 Network diagram

 

Table 1 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 2 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.

Restrictions and guidelines

Before you configure one-to-two VLAN mappings on PE devices, create SVLANs first. You do not need to create CVLANs or assign ports to CVLANs on PE devices.

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 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 Ten-GigabitEthernet 1/0/1:

# Configure the port as a hybrid port.

[PE_A] interface ten-gigabitethernet 1/0/1

[PE_A-Ten-GigabitEthernet1/0/1] port link-type hybrid

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

[PE_A-Ten-GigabitEthernet1/0/1] port hybrid vlan 1001 to 1003 untagged

# Remove the port from VLAN 1.

[PE_A-Ten-GigabitEthernet1/0/1] 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-Ten-GigabitEthernet1/0/1] 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-Ten-GigabitEthernet1/0/1] 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-Ten-GigabitEthernet1/0/1] 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-Ten-GigabitEthernet1/0/1] qos trust dot1p

[PE_A-Ten-GigabitEthernet1/0/1] quit

3.     Configure the customer-side port Ten-GigabitEthernet 1/0/2:

# Configure the port as a hybrid port.

[PE_A] interface ten-gigabitethernet 1/0/2

[PE_A-Ten-GigabitEthernet1/0/2] port link-type hybrid

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

[PE_A-Ten-GigabitEthernet1/0/2] port hybrid vlan 2001 to 2003 untagged

# Remove the port from VLAN 1.

[PE_A-Ten-GigabitEthernet1/0/2] 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-Ten-GigabitEthernet1/0/2] 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-Ten-GigabitEthernet1/0/2] 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-Ten-GigabitEthernet1/0/2] 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-Ten-GigabitEthernet1/0/2] qos trust dot1p

[PE_A-Ten-GigabitEthernet1/0/2] quit

4.     Configure the service provider-side port Ten-GigabitEthernet 1/0/3:

# Configure the port as a trunk port.

[PE_A] interface ten-gigabitethernet 1/0/3

[PE_A-Ten-GigabitEthernet1/0/3] port link-type trunk

# Remove the port from VLAN 1.

[PE_A-Ten-GigabitEthernet1/0/3] undo port trunk permit vlan 1

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

[PE_A-Ten-GigabitEthernet1/0/3] port trunk permit vlan 1001 to 1003 2001 to 2003

[PE_A-Ten-GigabitEthernet1/0/3] 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 Ten-GigabitEthernet 1/0/1:

# Configure the port as a hybrid port.

[PE_B] interface ten-gigabitethernet 1/0/1

[PE_B-Ten-GigabitEthernet1/0/1] port link-type hybrid

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

[PE_B-Ten-GigabitEthernet1/0/1] port hybrid vlan 2001 to 2003 untagged

# Remove the port from VLAN 1.

[PE_B-Ten-GigabitEthernet1/0/1] 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-Ten-GigabitEthernet1/0/1] 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-Ten-GigabitEthernet1/0/1] 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-Ten-GigabitEthernet1/0/1] 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-Ten-GigabitEthernet1/0/1] qos trust dot1p

[PE_B-Ten-GigabitEthernet1/0/1] quit

3.     Configure the customer-side port Ten-GigabitEthernet 1/0/2:

# Configure the port as a hybrid port.

[PE_B] interface ten-gigabitethernet 1/0/2

[PE_B-Ten-GigabitEthernet1/0/2] port link-type hybrid

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

[PE_B-Ten-GigabitEthernet1/0/2] port hybrid vlan 1001 to 1003 untagged

# Remove the port from VLAN 1.

[PE_B-Ten-GigabitEthernet1/0/2] 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-Ten-GigabitEthernet1/0/2] 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-Ten-GigabitEthernet1/0/2] 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-Ten-GigabitEthernet1/0/2] 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-Ten-GigabitEthernet1/0/2] qos trust dot1p

[PE_B-Ten-GigabitEthernet1/0/2] quit

4.     Configure the service provider-side port Ten-GigabitEthernet 1/0/3:

# Configure the port as a trunk port.

[PE_B] interface ten-gigabitethernet 1/0/3

[PE_B-Ten-GigabitEthernet1/0/3] port link-type trunk

# Remove the port from VLAN 1.

[PE_B-Ten-GigabitEthernet1/0/3] undo port trunk permit vlan 1

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

[PE_B-Ten-GigabitEthernet1/0/3] port trunk permit vlan 1001 to 1003 2001 to 2003

[PE_B-Ten-GigabitEthernet1/0/3] 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 Ten-GigabitEthernet1/0/1:

  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 Ten-GigabitEthernet1/0/2:

  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 Ten-GigabitEthernet1/0/1:

  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 Ten-GigabitEthernet1/0/2:

  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 1001 to 1003

#

vlan 2001 to 2003

#

interface Ten-GigabitEthernet1/0/1

 port link-type hybrid

 undo port hybrid vlan 1

 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 Ten-GigabitEthernet1/0/2

 port link-type hybrid

 undo port hybrid vlan 1

 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 Ten-GigabitEthernet1/0/3

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 1001 to 1003 2001 to 2003

#

·     PE B:

#

vlan 1001 to 1003

#

vlan 2001 to 2003

#

interface Ten-GigabitEthernet1/0/1

 port link-type hybrid

 undo port hybrid vlan 1

 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 Ten-GigabitEthernet1/0/2

 port link-type hybrid

 undo port hybrid vlan 1

 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 Ten-GigabitEthernet1/0/3

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 1001 to 1003 2001 to 2003

#

Example: Configuring two-to-two VLAN mapping

Network configuration

As shown in Figure 3:

·     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 3 Network diagram

 

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 VLAN 100.

<SwitchA> system-view

[SwitchA] vlan 100

[SwitchA-vlan100] quit

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

[SwitchA] interface ten-gigabitethernet 1/0/1

[SwitchA-Ten-GigabitEthernet1/0/1] vlan mapping nest single 10 nested-vlan 100

# Configure Ten-GigabitEthernet 1/0/1 as a hybrid port.

[SwitchA-Ten-GigabitEthernet1/0/1] port link-type hybrid

# Assign Ten-GigabitEthernet 1/0/1 to VLAN 100 as an untagged member.

[SwitchA-Ten-GigabitEthernet1/0/1] port hybrid vlan 100 untagged

# Remove Ten-GigabitEthernet 1/0/1 from VLAN 1.

[SwitchA-Ten-GigabitEthernet1/0/1] undo port hybrid vlan 1

[SwitchA-Ten-GigabitEthernet1/0/1] quit

# Assign Ten-GigabitEthernet 1/0/2 to VLAN 100.

[SwitchA-Ten-GigabitEthernet1/0/2] port trunk permit vlan 100

# Remove Ten-GigabitEthernet 1/0/2 from VLAN 1.

[SwitchA-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1

[SwitchA-Ten-GigabitEthernet1/0/2] quit

Configuring Switch B

# Create VLAN 100.

<SwitchB> system-view

[SwitchB] vlan 100

[SwitchB-vlan100] quit

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

[SwitchB] interface ten-gigabitethernet 1/0/3

[SwitchB-Ten-GigabitEthernet1/0/3] vlan mapping nest single 10 nested-vlan 100

# Configure Ten-GigabitEthernet 1/0/3 as a hybrid port.

[SwitchB-Ten-GigabitEthernet1/0/3] port link-type hybrid

# Assign Ten-GigabitEthernet 1/0/3 to VLAN 100 as an untagged member.

[SwitchB-Ten-GigabitEthernet1/0/3] port hybrid vlan 100 untagged

# Remove Ten-GigabitEthernet 1/0/3 from VLAN 1.

[SwitchB-Ten-GigabitEthernet1/0/3] undo port hybrid vlan 1

[SwitchB-Ten-GigabitEthernet1/0/3] quit

# Configure Ten-GigabitEthernet 1/0/1 as a trunk port.

[SwitchB] interface ten-gigabitethernet 1/0/1

[SwitchB-Ten-GigabitEthernet1/0/1] port link-type trunk

# Assign Ten-GigabitEthernet 1/0/1 to VLAN 100.

[SwitchB-Ten-GigabitEthernet1/0/1] port trunk permit vlan 100

# Remove Ten-GigabitEthernet 1/0/1 from VLAN 1.

[SwitchB-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1

[SwitchB-Ten-GigabitEthernet1/0/1] quit

# Configure Ten-GigabitEthernet 1/0/2 as a trunk port.

[SwitchB] interface ten-gigabitethernet 1/0/2

[SwitchB-Ten-GigabitEthernet1/0/2] port link-type trunk

# Assign Ten-GigabitEthernet 1/0/2 to VLAN 100.

[SwitchB-Ten-GigabitEthernet1/0/2] port trunk permit vlan 100

# Remove Ten-GigabitEthernet 1/0/2 from VLAN 1.

[SwitchB-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1

[SwitchB-Ten-GigabitEthernet1/0/2] 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 Ten-GigabitEthernet 1/0/1 as a trunk port.

[SwitchC] interface ten-gigabitethernet 1/0/1

[SwitchC-Ten-GigabitEthernet1/0/1] port link-type trunk

# Assign Ten-GigabitEthernet 1/0/1 to VLANs 100 to 200.

[SwitchC-Ten-GigabitEthernet1/0/1] port trunk permit vlan 100 200

# Remove Ten-GigabitEthernet 1/0/1 from VLAN 1.

[SwitchC-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1

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

[SwitchC-Ten-GigabitEthernet1/0/1] vlan mapping tunnel 100 10 translated-vlan 200 30

[SwitchC-Ten-GigabitEthernet1/0/1] quit

# Configure Ten-GigabitEthernet 1/0/2 as a trunk port.

[SwitchC] interface ten-gigabitethernet 1/0/2

[SwitchC-Ten-GigabitEthernet1/0/2] port link-type trunk

# Assign Ten-GigabitEthernet 1/0/2 to VLAN 200.

[SwitchC-Ten-GigabitEthernet1/0/2] port trunk permit vlan 200

# Remove Ten-GigabitEthernet 1/0/2 from VLAN 1.

[SwitchC-Ten-GigabitEthernet1/0/2] undo port trunk permit vlan 1

[SwitchC-Ten-GigabitEthernet1/0/2] quit

Configuring Switch D

# Create VLAN 200.

<SwitchD> system-view

[SwitchD] vlan 200

[SwitchD-vlan200] quit

# Configure Ten-GigabitEthernet 1/0/1 as a trunk port.

[SwitchD] interface ten-gigabitethernet 1/0/1

[SwitchD-Ten-GigabitEthernet1/0/1] port link-type trunk

# Assign Ten-GigabitEthernet 1/0/1 to VLAN 200.

[SwitchD-Ten-GigabitEthernet1/0/1] port trunk permit vlan 200

# Remove Ten-GigabitEthernet 1/0/1 from VLAN 1.

[SwitchD-Ten-GigabitEthernet1/0/1] undo port trunk permit vlan 1

[SwitchD-Ten-GigabitEthernet1/0/1] quit

# Configure Ten-GigabitEthernet 1/0/2 as a hybrid port.

[SwitchD-Ten-GigabitEthernet1/0/2] port link-type hybrid

# Assign Ten-GigabitEthernet 1/0/2 to VLAN 200 as an untagged member.

[SwitchD-Ten-GigabitEthernet1/0/2] port hybrid vlan 200 untagged

# Remove Ten-GigabitEthernet 1/0/2 from VLAN 1.

[SwitchD-Ten-GigabitEthernet1/0/2] undo port hybrid vlan 1

# Configure one-to-two VLAN mapping on Ten-GigabitEthernet 1/0/2 to add SVLAN tag 300 to packets carrying VLAN tag 30.

[SwitchD-Ten-GigabitEthernet1/0/2] vlan mapping nest single 30 nested-vlan 200

[SwitchD-Ten-GigabitEthernet1/0/2] quit

Verifying the configuration

# Verify VLAN mapping information on Switch C.

[SwitchC] display vlan mapping

Interface Ten-GigabitEthernet1/0/1:

  Outer VLAN    Inner VLAN    Translated Outer VLAN    Translated Inner VLAN

  100           10            200                      30

Configuration files

·     Switch A

#

vlan 100

#

interface Ten-GigabitEthernet1/0/1

 port link-type hybrid

 port hybrid vlan 100 untagged

 vlan mapping nest single 10 nested-vlan 100

#

interface Ten-GigabitEthernet1/0/2

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 100

·     Switch B

#

vlan 100

#

interface Ten-GigabitEthernet1/0/1

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 100

#

interface Ten-GigabitEthernet1/0/2

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 100

#

interface Ten-GigabitEthernet1/0/3

 port link-type hybrid

 port hybrid vlan 100 untagged

 vlan mapping nest single 10 nested-vlan 100

·     Switch C

#

vlan 100

#

vlan 200

#

interface Ten-GigabitEthernet1/0/1

 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 Ten-GigabitEthernet1/0/2

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 200

#

·     Switch D

#

vlan 200

#

interface Ten-GigabitEthernet1/0/1

 port link-type trunk

 undo port trunk permit vlan 1

 port trunk permit vlan 200

#

interface Ten-GigabitEthernet1/0/2

 port link-type hybrid

 port hybrid vlan 200 untagged

 vlan mapping nest single 30 nested-vlan 200

#

Related documentation

·     H3C S7500X Switch Series Layer 2—LAN Switching Command Reference-R758X

·     H3C S7500X Switch Series Layer 2—LAN Switching Configuration Guide-R758X