Contents

Introduction· 1

Prerequisites· 1

Example: Configuring static multicast MAC address entries· 1

Network configuration· 1

Analysis· 1

Applicable hardware and software versions· 2

Restrictions and guidelines· 3

Procedures· 3

Verifying the configuration· 3

Configuration files· 3

 

Introduction

This document provides configuration examples of static multicast MAC address entries.

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 multicast MAC addresses.

Example: Configuring static multicast MAC address entries

Network configuration

As shown in Figure 1, Router A runs IGMP and acts as the IGMP querier. Switch A does not run a Layer 2 multicast protocol.

Configure a static multicast MAC address entry on Switch A so that only Host A and Host C can receive multicast data for multicast group 224.1.1.1.

Figure 1 Network diagram

 

Analysis

Multicast MAC address entries guide Layer 2 multicast forwarding. They can be dynamically created through Layer 2 multicast protocols or manually configured by binding multicast MAC addresses and ports.

In this example, Switch A does not run a Layer 2 multicast protocol. To control destination ports of Layer 2 multicast data, configure a static multicast MAC address entry on Switch A.

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

You must specify an unused multicast MAC address in a manually configured multicast MAC address entry.

Procedures

# On Switch A, create VLAN 100.

<SwitchA> system-view

[SwitchA] vlan 100

[SwitchA-vlan100] quit

# Configure GigabitEthernet 1/0/1 through GigabitEthernet 1/0/4 to operate in Layer 2 mode, and assign the ports to VLAN 100.

[SwitchA] interface range gigabitethernet 1/0/1 to gigabitethernet 1/0/4

[SwitchA-if-range] port access vlan 100

[SwitchA-if-range] quit

# Translate the multicast IP address 224.1.1.1 to a multicast MAC address (0100-5e01-0101). (Details not shown.)

# Create a static entry for the multicast MAC address 0100-5e01-0101 with GigabitEthernet 1/0/2 and GigabitEthernet 1/0/4 in VLAN 100 as outgoing ports.

[SwitchA] mac-address multicast 0100-5e01-0101 interface gigabitethernet 1/0/2 gigabitethernet 1/0/4 vlan 100

Verifying the configuration

# Display static multicast MAC address entries for VLAN 100 on Switch A.

[SwitchA] display mac-address multicast vlan 100

MAC Address      VLAN ID    State            Port/NickName            Aging

0100-5e01-0101   100        Multicast        GE1/0/2                  N

                                             GE1/0/4

The output shows that GigabitEthernet 1/0/2 and GigabitEthernet 1/0/4 have become outgoing ports of the multicast MAC group 0100-5e01-0101.

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.

 

#

vlan 100

#

interface GigabitEthernet1/0/1

 port link-mode bridge

 port access vlan 100

#

interface GigabitEthernet1/0/2

 port link-mode bridge

 port access vlan 100

#

interface GigabitEthernet1/0/3

 port link-mode bridge

 port access vlan 100

#

interface GigabitEthernet1/0/4

 port link-mode bridge

 port access vlan 100

#

mac-address multicast 0100-5e01-0101 interface GigabitEthernet1/0/2 GigabitEthernet1/0/4 vlan 100

#