H3C S12500X-AF & S12500-X & S9800
Static Multicast MAC Address Entry
Configuration Examples

S12500X-AF Switch Series

S12500-X Switch Series

S9800 Switch Series

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Document version: 6W100-20190628

 

 

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring static multicast MAC address entries· 1

Network configuration· 1

Analysis· 1

Software versions used· 2

Restrictions and guidelines· 2

Procedures· 2

Verifying the configuration· 2

Configuration files· 3

Related documentation· 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.

Software versions used

Table 1 shows the software versions used in this configuration example.

Table 1 Product and software version compatibility

Product	Software version
S12500X-AF Switch Series	S12500X-CMW710-R2712
S12500-X Switch Series	S12500X-CMW710-R2712
S9800 Switch Series	S9800-CMW710-R2712

 

Restrictions and guidelines

When you configure multicast MAC address entries, follow these guidelines:

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

·     By default, interfaces on the device are disabled (in ADM or Administratively Down state). To have an interface operate, you must use the undo shutdown command to enable that interface.

Procedures

# On Switch A, create VLAN 100.

<SwitchA> system-view

[SwitchA] vlan 100

[SwitchA-vlan100] quit

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

[SwitchA] interface range ten-gigabitethernet 1/0/1 to ten-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 Ten-GigabitEthernet 1/0/2 and Ten-GigabitEthernet 1/0/4 in VLAN 100 as outgoing ports.

[SwitchA] mac-address multicast 0100-5e01-0101 interface ten-gigabitethernet 1/0/2 ten-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        XGE1/0/2                 N

                                             XGE1/0/4

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

Configuration files

#

vlan 100

#

interface Ten-GigabitEthernet1/0/1

 port link-mode bridge

 port access vlan 100

#

interface Ten-GigabitEthernet1/0/2

 port link-mode bridge

 port access vlan 100

#

interface Ten-GigabitEthernet1/0/3

 port link-mode bridge

 port access vlan 100

#

interface Ten-GigabitEthernet1/0/4

 port link-mode bridge

 port access vlan 100

#

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

#

Related documentation

·     H3C S12500X-AF & S12500-X & S9800 Switch Series IP Multicast Command Reference (Release 27xx)

·     H3C S12500X-AF & S12500-X & S9800 Switch Series IP Multicast Configuration Guide (Release 27xx)