H3C S12500R Switch Router Series
S-MLAG Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring S-MLAG·· 1

Network configuration· 1

Analysis· 1

Software versions used· 2

Restrictions and guidelines· 2

Procedures· 2

Configuring Device A· 2

Configuring Device B· 2

Configuring Device C· 3

Configuring Device D·· 3

Verifying the configuration· 4

Configuration files· 4

Example: Establishing a multidevice aggregate link with a server 6

Network configuration· 6

Analysis· 6

Software versions used· 6

Restrictions and guidelines· 6

Procedures· 7

Configuring Device A· 7

Configuring Device B· 7

Configuring Device C· 8

Verifying the configuration· 8

Configuration files· 11

Related documentation· 12

 

Introduction

This document provides configuration examples for using simple multichassis link aggregation (S-MLAG).

S-MLAG enhances dynamic link aggregation to establish an aggregation that spans multiple standalone devices to a remote device.

Prerequisites

The configuration examples 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.

The following information is provided based on the assumption that you have basic knowledge of S-MLAG.

Example: Configuring S-MLAG

Network configuration

Device B, Device C, and Device D are standalone devices. As shown in Figure 1, configure Device B, Device C, and Device D as S-MLAG devices to establish a multidevice aggregate link with Device A.

Figure 1 Network diagram

 

Analysis

To establish a multidevice aggregate link with Device A, you must perform the following tasks on Device B, Device C, and Device D:

1.     Create a Layer 2 dynamic aggregate interface and assign HundredGigE 1/0/1 to its aggregation group.

2.     Assign the aggregate interfaces to the same DR group.

Software versions used

This configuration example was created and verified on Release 3606.

Restrictions and guidelines

Before you assign an interface to an aggregation group, use the display this command in interface view to identify whether attribute settings exist, including port isolation, VLAN, and VLAN mapping settings. If attribute settings exist, use the corresponding undo commands to remove them.

Configure the link aggregation settings other than S-MLAG settings on each S-MLAG device. Make sure the settings are consistent across the S-MLAG devices.

As a best practice, maintain consistency across S-MLAG devices in service feature configuration.

Procedures

Configuring Device A

# Create Layer 2 aggregate interface Bridge-Aggregation 10, and set the link aggregation mode to dynamic.

<DeviceA> system-view

[DeviceA] interface bridge-aggregation 10

[DeviceA-Bridge-Aggregation10] link-aggregation mode dynamic

[DeviceA-Bridge-Aggregation10] quit

# Assign HundredGigE 1/0/1 through HundredGigE 1/0/3 to aggregation group 10.

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] port link-aggregation group 10

[DeviceA-HundredGigE1/0/1] quit

[DeviceA] interface hundredgige 1/0/2

[DeviceA-HundredGigE1/0/2] port link-aggregation group 10

[DeviceA-HundredGigE1/0/2] quit

[DeviceA] interface hundredgige 1/0/3

[DeviceA-HundredGigE1/0/3] port link-aggregation group 10

[DeviceA-HundredGigE1/0/3] quit

Configuring Device B

# Set the LACP system MAC address to 0001-0001-0001.

<DeviceB> system-view

[DeviceB] lacp system-mac 1-1-1

# Set the LACP system priority to 123.

[DeviceB] lacp system-priority 123

# Set the LACP system number to 1.

[DeviceB] lacp system-number 1

# Create Layer 2 aggregate interface Bridge-Aggregation 2, and set the link aggregation mode to dynamic.

[DeviceB] interface bridge-aggregation 2

[DeviceB-Bridge-Aggregation2] link-aggregation mode dynamic

# Assign Bridge-Aggregation 2 to S-MLAG group 100.

[DeviceB-Bridge-Aggregation2] port s-mlag group 100

[DeviceB-Bridge-Aggregation2] quit

# Assign HundredGigE 1/0/1 to aggregation group 2.

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] port link-aggregation group 2

[DeviceB-HundredGigE1/0/1] quit

Configuring Device C

# Set the LACP system MAC address to 0001-0001-0001.

<DeviceC> system-view

[DeviceC] lacp system-mac 1-1-1

# Set the LACP system priority to 123.

[DeviceC] lacp system-priority 123

# Set the LACP system number to 2.

[DeviceC] lacp system-number 2

# Create Layer 2 aggregate interface Bridge-Aggregation 3, and set the link aggregation mode to dynamic.

[DeviceC] interface bridge-aggregation 3

[DeviceC-Bridge-Aggregation3] link-aggregation mode dynamic

# Assign Bridge-Aggregation 3 to S-MLAG group 100.

[DeviceC-Bridge-Aggregation3] port s-mlag group 100

# Assign HundredGigE 1/0/1 to aggregation group 3.

[DeviceC] interface hundredgige 1/0/1

[DeviceC-HundredGigE1/0/1] port link-aggregation group 3

[DeviceC-HundredGigE1/0/1] quit

Configuring Device D

# Set the LACP system MAC address to 0001-0001-0001.

<DeviceD> system-view

[DeviceD] lacp system-mac 1-1-1

# Set the LACP system priority to 123.

[DeviceD] lacp system-priority 123

# Set the LACP system number to 3.

[DeviceD] lacp system-number 3

# Create Layer 2 aggregate interface Bridge-Aggregation 4, and set the link aggregation mode to dynamic.

[DeviceD] interface bridge-aggregation 4

[DeviceD-Bridge-Aggregation4] link-aggregation mode dynamic

# Assign Bridge-Aggregation 4 to S-MLAG group 100.

[DeviceD-Bridge-Aggregation4] port s-mlag group 100

# Assign HundredGigE 1/0/1 to aggregation group 4.

[DeviceD] interface hundredgige 1/0/1

[DeviceD-HundredGigE1/0/1] port link-aggregation group 4

[DeviceD-HundredGigE1/0/1] quit

Verifying the configuration

# Verify that HundredGigE 1/0/1 through HundredGigE 1/0/3 on Device A are Selected ports.

[DeviceA] display link-aggregation verbose

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Role: P -- Primary, S – Secondary

 

Aggregate Interface: Bridge-Aggregation10

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x8000, a0c7-9afd-0100

Local:

  Port                Status   Priority Index    Oper-Key               Flag

  HGE1/0/1            S        32768    1        1                      {ACDEF}

  HGE1/0/2            S        32768    2        1                      {ACDEF}

  HGE1/0/3            S        32768    3        1                      {ACDEF}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    16385    50100    0x7b  , 0001-0001-0001 {ACDEF}

  HGE1/0/2            32768    32769    50100    0x7b  , 0001-0001-0001 {ACDEF}

  HGE1/0/3            32768    49153    50100    0x7b  , 0001-0001-0001 {ACDEF}

Configuration files

·     Device A:

#

interface Bridge-Aggregation10

 link-aggregation mode dynamic

#

interface HundredGigE1/0/1

 port link-mode bridge

 port link-aggregation group 10

#

interface HundredGigE1/0/2

 port link-mode bridge

 port link-aggregation group 10

#

interface HundredGigE1/0/3

 port link-mode bridge

 port link-aggregation group 10

#

·     Device B:

#

 lacp system-mac 0001-0001-0001

 lacp system-number 1

 lacp system-priority 123

#

interface Bridge-Aggregation2

 link-aggregation mode dynamic

 port s-mlag group 100

#

interface HundredGigE1/0/1

 port link-mode bridge

 port link-aggregation group 2

#

·     Device C:

#

 lacp system-mac 0001-0001-0001

 lacp system-number 2

 lacp system-priority 123

#

interface Bridge-Aggregation3

 link-aggregation mode dynamic

 port s-mlag group 100

#

interface HundredGigE1/0/1

 port link-mode bridge

 port link-aggregation group 3

#

·     Device D:

#

 lacp system-mac 0001-0001-0001

 lacp system-number 3

 lacp system-priority 123

#

interface Bridge-Aggregation4

 link-aggregation mode dynamic

 port s-mlag group 100

#

interface HundredGigE1/0/1

 port link-mode bridge

 port link-aggregation group 4

#

Example: Establishing a multidevice aggregate link with a server

Network configuration

Device A, Device B, and Device C are standalone devices. As shown in Figure 2, configure Device A, Device B, and Device C as S-MLAG devices to establish a multidevice aggregate link with the server. On Device A, Device B, and Device C, configure the server-facing aggregate interfaces as edge aggregate interfaces.

Figure 2 Network diagram

 

Analysis

To establish a multidevice aggregate link with the server, you must perform the following tasks on Device A, Device B, and Device C:

1.     Create a Layer 2 dynamic aggregate interface and assign HundredGigE 1/0/1 to its aggregation group.

2.     Assign the aggregate interfaces to the same DR group.

Software versions used

This configuration example was created and verified on Release 3606.

Restrictions and guidelines

Before you assign an interface to an aggregation group, use the display this command in interface view to identify whether attribute settings exist, including port isolation, VLAN, and VLAN mapping settings. If attribute settings exist, use the corresponding undo commands to remove them.

Configure the link aggregation settings other than S-MLAG settings on each S-MLAG device. Make sure the settings are consistent across the S-MLAG devices.

As a best practice, maintain consistency across S-MLAG devices in service feature configuration.

Procedures

Configuring Device A

# Set the LACP system MAC address to 0001-0001-0001.

<DeviceA> system-view

[DeviceA] lacp system-mac 1-1-1

# Set the LACP system priority to 123.

[DeviceA] lacp system-priority 123

# Set the LACP system number to 1.

[DeviceA] lacp system-number 1

# Create Layer 2 aggregate interface Bridge-Aggregation 1, and set the link aggregation mode to dynamic.

[DeviceA] interface bridge-aggregation 1

[DeviceA-Bridge-Aggregation1] link-aggregation mode dynamic

# Configure Bridge-Aggregation 1 as an edge aggregate interface.

[DeviceA-Bridge-Aggregation1] lacp edge-port

# Assign Bridge-Aggregation 1 to S-MLAG group 100.

[DeviceA-Bridge-Aggregation1] port s-mlag group 100

[DeviceA-Bridge-Aggregation1] quit

# Assign HundredGigE 1/0/1 to aggregation group 1.

[DeviceA] interface hundredgige 1/0/1

[DeviceA-HundredGigE1/0/1] port link-aggregation group 1

[DeviceA-HundredGigE1/0/1] quit

Configuring Device B

# Set the LACP system MAC address to 0001-0001-0001.

<DeviceB> system-view

[DeviceB] lacp system-mac 1-1-1

# Set the LACP system priority to 123.

[DeviceB] lacp system-priority 123

# Set the LACP system number to 2.

[DeviceB] lacp system-number 2

# Create Layer 2 aggregate interface Bridge-Aggregation 2, and set the link aggregation mode to dynamic.

[DeviceB] interface bridge-aggregation 2

[DeviceC-Bridge-Aggregation2] link-aggregation mode dynamic

# Configure Bridge-Aggregation 2 as an edge aggregate interface.

[DeviceB-Bridge-Aggregation2] lacp edge-port

# Assign Bridge-Aggregation 2 to S-MLAG group 100.

[DeviceB-Bridge-Aggregation2] port s-mlag group 100

# Assign HundredGigE 1/0/1 to aggregation group 2.

[DeviceB] interface hundredgige 1/0/1

[DeviceB-HundredGigE1/0/1] port link-aggregation group 2

[DeviceB-HundredGigE1/0/1] quit

Configuring Device C

# Set the LACP system MAC address to 0001-0001-0001.

<DeviceC> system-view

[DeviceC] lacp system-mac 1-1-1

# Set the LACP system priority to 123.

[DeviceC] lacp system-priority 123

# Set the LACP system number to 3.

[DeviceC] lacp system-number 3

# Create Layer 2 aggregate interface Bridge-Aggregation 3, and set the link aggregation mode to dynamic.

[DeviceC] interface bridge-aggregation 3

[DeviceC-Bridge-Aggregation3] link-aggregation mode dynamic

# Configure Bridge-Aggregation 3 as an edge aggregate interface.

[DeviceC-Bridge-Aggregation3] lacp edge-port

# Assign Bridge-Aggregation 3 to S-MLAG group 100.

[DeviceC-Bridge-Aggregation3] port s-mlag group 100

# Assign HundredGigE 1/0/1 to aggregation group 3.

[DeviceC] interface hundredgige 1/0/1

[DeviceC-HundredGigE1/0/1] port link-aggregation group 3

[DeviceC-HundredGigE1/0/1] quit

Verifying the configuration

# Verify that the aggregation member ports on Device A, Device B, and Device C are working in Individual state when dynamic link aggregation is not configured on the server.

[DeviceA] display link-aggregation verbose

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Role: P -- Primary, S – Secondary

 

Aggregate Interface: Bridge-Aggregation1

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x7b, 0001-0001-0001

Local:

  Port                Status   Priority Index    Oper-Key               Flag

  HGE1/0/1            I        32768    16385    50100                  {AG}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    0        0        0x8000, 0000-0000-0000 {DEF}

[DeviceB] display link-aggregation verbose

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Role: P -- Primary, S – Secondary

 

Aggregate Interface: Bridge-Aggregation2

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x7b, 0001-0001-0001

Local:

  Port                Status   Priority Index    Oper-Key               Flag

  HGE1/0/1            I        32768    32769    50100                  {AG}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    0        0        0x8000, 0000-0000-0000 {DEF}

[DeviceC] display link-aggregation verbose

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Role: P -- Primary, S – Secondary

 

Aggregate Interface: Bridge-Aggregation3

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x7b, 0001-0001-0001

Local:

  Port                Status   Priority Index    Oper-Key               Flag

  HGE1/0/1            I        32768    49153    50100                  {AG}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    0        0        0x8000, 0000-0000-0000 {DEF}

# Verify that the aggregation member ports on Device A, Device B, and Device C are working in Selected state after dynamic link aggregation is configured on the server.

[DeviceA] display link-aggregation verbose

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Role: P -- Primary, S – Secondary

 

Aggregate Interface: Bridge-Aggregation1

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x7b, 0001-0001-0001

Local:

  Port                Status   Priority Index    Oper-Key               Flag

  HGE1/0/1            S        32768    16385    50100                  {ACDEF}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    1        1        0x8000, 5022-e533-0400 {ACDEF}

[DeviceB] display link-aggregation verbose

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Role: P -- Primary, S – Secondary

 

Aggregate Interface: Bridge-Aggregation2

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x7b, 0001-0001-0001

Local:

  Port                Status   Priority Index    Oper-Key               Flag

  HGE1/0/1            S        32768    32769    50100                  {ACDEF}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    2        1        0x8000, 5022-e533-0400 {ACDEF}

[DeviceC] display link-aggregation verbose

Loadsharing Type: Shar -- Loadsharing, NonS -- Non-Loadsharing

Port Status: S -- Selected, U -- Unselected, I -- Individual

Port: A -- Auto port

Flags:  A -- LACP_Activity, B -- LACP_Timeout, C -- Aggregation,

        D -- Synchronization, E -- Collecting, F -- Distributing,

        G -- Defaulted, H -- Expired

Role: P -- Primary, S – Secondary

 

Aggregate Interface: Bridge-Aggregation3

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x7b, 0001-0001-0001

Local:

  Port                Status   Priority Index    Oper-Key               Flag

  HGE1/0/1            S        32768    49153    50100                  {ACDEF}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    3        1        0x8000, 5022-e533-0400 {ACDEF}

Configuration files

·     Device A:

#

 lacp system-mac 0001-0001-0001

 lacp system-number 1

 lacp system-priority 123

#

interface Bridge-Aggregation1

 link-aggregation mode dynamic

 lacp edge-port

 port s-mlag group 100

#

interface HundredGigE1/0/1

 port link-mode bridge

 port link-aggregation group 1

#

·     Device B:

#

 lacp system-mac 0001-0001-0001

 lacp system-number 2

 lacp system-priority 123

#

interface Bridge-Aggregation2

 link-aggregation mode dynamic

 lacp edge-port

 port s-mlag group 100

#

interface HundredGigE1/0/1

 port link-mode bridge

 port link-aggregation group 2

#

·     Device C:

#

 lacp system-mac 0001-0001-0001

 lacp system-number 3

 lacp system-priority 123

#

interface Bridge-Aggregation3

 link-aggregation mode dynamic

 lacp edge-port

 port s-mlag group 100

#

interface HundredGigE1/0/1

 port link-mode bridge

 port link-aggregation group 3

#

Related documentation

·     H3C S12500R Switch Router Series Layer 2—LAN Switching Command Reference-R3606

·     H3C S12500R Switch Router Series Layer 2—LAN Switching Configuration Guide-R3606