Contents

Introduction· 1

Prerequisites· 1

General configuration restrictions and guidelines· 1

Example: Configuring port isolation· 1

Network configuration· 1

Applicable hardware and software versions· 2

Restrictions and guidelines· 3

Procedures· 3

Verifying the configuration· 4

Configuration files· 4

 

Introduction

This document provides port isolation configuration examples.

Prerequisites

This document is not restricted to specific software or hardware versions.

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 port isolation.

General configuration restrictions and guidelines

You cannot assign the member ports of a service loopback group to an isolation group. You cannot assign the member ports of an isolation group to a service loopback group.

Example: Configuring port isolation

Network configuration

As shown in Figure 1, the company branches Site 1 and Site 2 transfer service traffic in VLAN 2 and VLAN 3. Device A connects to the Internet through GigabitEthernet 1/0/1.

Configure port isolation on Device A to meet the following requirements:

·     All hosts can access the Internet through Device A.

·     Host A and Host B are isolated from each other at Layer 2.

·     Host C and Host D are isolated from each other at Layer 2.

Figure 1 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
S6520XE-HI switch series	Supported in Release 11xx
S5560X-EI switch series	Supported in Release 111x
S5500V2-EI switch series	Supported in Release 111x
MS4520V2-30F switch	Supported in Release 111x
S5560S-EI switch series S5560S-SI switch series	Supported in Release 612x
S5130S-HI switch series S5130S-EI switch series S5130S-SI switch series S5130S-LI switch series	Supported in Release 612x
S5120V2-SI switch series S5120V2-LI switch series	Supported in Release 612x
S3100V3-EI switch series S3100V3-SI switch series	Supported in Release 612x
S5110V2 switch series	Supported in Release 612x
S5110V2-SI switch series	Supported in Release 612x
S5000V3-EI switch series	Supported in Release 612x
S5000E-X switch series	Supported in Release 612x
WAS6000 switch series	Supported in Release 612x
E128C switch E152C switch E500C switch series E500D switch series	Supported in Release 612x
MS4520V2 switch series (except the MS4520V2-30F switch)	Supported in Release 612x
MS4320V2 switch series MS4300V2 switch series MS4320 switch series MS4200 switch series	Supported in Release 612x
WS5850-WiNet switch series	Supported in Release 612x
WS5820-WiNet switch series WS5810-WiNet switch series	Supported in Release 612x

 

Restrictions and guidelines

When you configure port isolation on the device, follow these restrictions and guidelines:

·     Before assigning a port to an isolation group, make sure the isolation group already exists.

·     You can assign a port to only one isolation group.

Procedures

# Create VLAN 2 and assign ports GigabitEthernet 1/0/2 and GigabitEthernet 1/0/3 to the VLAN.

<DeviceA> system-view

[DeviceA] vlan 2

[DeviceA-vlan2] port gigabitethernet 1/0/2

[DeviceA-vlan2] port gigabitethernet 1/0/3

[DeviceA-vlan2] quit

# Create VLAN 3 and assign ports GigabitEthernet 1/0/4 and GigabitEthernet 1/0/5 to the VLAN.

[DeviceA] vlan 3

[DeviceA-vlan3] port gigabitethernet 1/0/4

[DeviceA-vlan3] port gigabitethernet 1/0/5

[DeviceA-vlan3] quit

# Configure port GigabitEthernet 1/0/1 as a trunk port and assign it to VLAN 2 and VLAN 3.

[DeviceA] interface gigabitethernet 1/0/1

[DeviceA-GigabitEthernet1/0/1] port link-type trunk

[DeviceA-GigabitEthernet1/0/1] port trunk permit vlan 2 3

[DeviceA-GigabitEthernet1/0/1] quit

# Create isolation groups 1 and 2.

[DeviceA] port-isolate group 1

[DeviceA] port-isolate group 2

# Assign ports GigabitEthernet 1/0/2 and GigabitEthernet 1/0/3 to isolation group 1.

[DeviceA] interface gigabitethernet 1/0/2

[DeviceA-GigabitEthernet1/0/2] port-isolate enable group 1

[DeviceA-GigabitEthernet1/0/2] quit

[DeviceA] interface gigabitethernet 1/0/3

[DeviceA-GigabitEthernet1/0/3] port-isolate enable group 1

[DeviceA-GigabitEthernet1/0/3] quit

# Assign ports GigabitEthernet 1/0/4 and GigabitEthernet 1/0/5 to isolation group 2.

[DeviceA] interface gigabitethernet 1/0/4

[DeviceA-GigabitEthernet1/0/4] port-isolate enable group 2

[DeviceA-GigabitEthernet1/0/4] quit

[DeviceA] interface gigabitethernet 1/0/5

[DeviceA-GigabitEthernet1/0/5] port-isolate enable group 2

[DeviceA-GigabitEthernet1/0/5] quit

Verifying the configuration

# Display information about all isolation groups.

[DeviceA] display port-isolate group

 Port isolation group information:

 Group ID: 1

 Group members:

    GigabitEthernet1/0/2

    GigabitEthernet1/0/3

 

Group ID: 2

 Group members:

    GigabitEthernet1/0/4

    GigabitEthernet1/0/5

The output shows that:

·     Ports GigabitEthernet 1/0/2 and GigabitEthernet 1/0/3 are in isolation group 1. As a result, Host A and Host B are isolated from each other at Layer 2.

·     Ports GigabitEthernet 1/0/4 and GigabitEthernet 1/0/4 are in isolation group 2. As a result, Host C and Host D are isolated from each other at Layer 2.

Configuration files

	IMPORTANT: The port link-mode bridge command is available only on the following switches: ·     S6520XE-HI switch series. ·     S5560X-EI switch series. ·     S5500V2-EI switch series. ·     MS4520V2-30F switch.

 

#

 port-isolate group 1

 port-isolate group 2

#

vlan 2 to 3

#

interface GigabitEthernet1/0/1

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 1 to 3

#

interface GigabitEthernet1/0/2

 port link-mode bridge

 port access vlan 2

 port-isolate enable group 1

#

interface GigabitEthernet1/0/3

 port link-mode bridge

 port access vlan 2

 port-isolate enable group 1

#

interface GigabitEthernet1/0/4

 port link-mode bridge

 port access vlan 3

 port-isolate enable group 2

#

interface GigabitEthernet1/0/5

 port link-mode bridge

 port access vlan 3

 port-isolate enable group 2

#