H3C S12500R Switch Router Series
Ethernet Link Aggregation
Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring Layer 2 link aggregation· 1

Network configuration· 1

Analysis· 1

Software versions used· 2

Restrictions and guidelines· 2

Procedures· 2

Verifying the configuration· 3

Configuration files· 4

Example: Configuring Layer 3 link aggregation· 5

Network configuration· 5

Software versions used· 5

Restrictions and guidelines· 6

Procedures· 6

Verifying the configuration· 6

Configuration files· 7

Related documentation· 8

 

Introduction

This document provides Ethernet link aggregation configuration examples.

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 Ethernet link aggregation.

Example: Configuring Layer 2 link aggregation

Network configuration

As shown in Figure 1, both Device A and Device B forward traffic from VLAN 10 and VLAN 20.

Configure link aggregation on Device A and Device B to meet the following requirements:

·     VLAN 10 on Device A can communicate with VLAN 10 on Device B.

·     VLAN 20 on Device A can communicate with VLAN 20 on Device B.

Figure 1 Network diagram

 

Analysis

To enable traffic from VLAN 10 and VLAN 20 to pass through Layer 2 aggregate interface Bridge-aggregation 1, perform the following tasks:

·     Configure Layer 2 aggregate interface Bridge-aggregation 1 as a trunk port.

·     Assign the aggregate interface to VLAN 10 and VLAN 20.

Software versions used

This configuration example was created and verified on Release 3606.

Restrictions and guidelines

When you configure Layer 2 link aggregation, follow these restrictions and guidelines:

·     When you assign a port to an aggregation group, the recommended configuration procedure is as follows:

a.     Use the display this command in interface view to check the following attribute configurations of the port:

-     Port isolation.

-     VLAN.

-     VLAN mapping.

b.     If any of the above configurations exist, use the undo forms of the corresponding commands to remove these configurations. This enables the port to use the default attribute configurations.

c.     Assign the port to the aggregation group.

·     In a static aggregation group, the Selected state of a port is not affected by whether the peer port is added to an aggregation group and is Selected. As a result, the Selected state of a port might be different from the Selected state of the peer port. When both ends support static aggregation and dynamic aggregation, use dynamic aggregation.

Procedures

1.     Configure Device A:

# Create VLAN 10, and assign port HundredGigE 1/0/4 to VLAN 10.

<DeviceA> system-view

[DeviceA] interface hundredgige 1/0/4

[DeviceA-HundredGigE1/0/4] port link-mode bridge

[DeviceA-HundredGigE1/0/4] quit

[DeviceA] vlan 10

[DeviceA-vlan10] port hundredgige 1/0/4

[DeviceA-vlan10] quit

# Create VLAN 20, and assign port HundredGigE 1/0/5 to VLAN 20.

[DeviceA] interface hundredgige 1/0/5

[DeviceA-HundredGigE1/0/5] port link-mode bridge

[DeviceA-HundredGigE1/0/5] quit

[DeviceA] vlan 20

[DeviceA-vlan20] port hundredgige 1/0/5

[DeviceA-vlan20] quit

# Create Layer 2 aggregate interface Bridge-aggregation 1. Use one of the following methods as needed.

¡     Use the static aggregation mode to create Layer 2 aggregate interface Bridge-aggregation 1.

[DeviceA] interface bridge-aggregation 1

[DeviceA-Bridge-Aggregation1] quit

¡     Use the dynamic aggregation mode to create Layer 2 aggregate interface Bridge-aggregation 1.

[DeviceA] interface bridge-aggregation 1

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

[DeviceA-Bridge-Aggregation1] quit

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

[DeviceA] interface range hundredgige 1/0/1 to hundredgige 1/0/3

[DeviceA-if-range] port link-aggregation group 1

[DeviceA-if-range] quit

# Configure Layer 2 aggregate interface Bridge-aggregation 1 as a trunk port.

[DeviceA] interface bridge-aggregation 1

[DeviceA-Bridge-Aggregation1] port link-type trunk

 Configuring HundredGigE1/0/1 done.

 Configuring HundredGigE1/0/2 done.

 Configuring HundredGigE1/0/3 done.

# Assign the aggregate interface to VLANs 10 and 20.

[DeviceA-Bridge-Aggregation1] port trunk permit vlan 10 20

 Configuring HundredGigE1/0/1 done.

 Configuring HundredGigE1/0/2 done.

 Configuring HundredGigE1/0/3 done.

[DeviceA-Bridge-Aggregation1] quit

2.     Configure Device B in the same way Device A is configured. (Details not shown.)

Verifying the configuration

# Display detailed information about the link aggregation groups on Device A.

·     Link aggregation configuration information when the static aggregation mode is used:

[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

 

Aggregation Interface: Bridge-Aggregation1

Aggregation Mode: Static

Loadsharing Type: Shar

  Port             Status  Priority Oper-Key  Role

  HGE1/0/1         S       32768    1         None

  HGE1/0/2         S       32768    1         None

  HGE1/0/3         S       32768    1         None

The output shows that all member ports in the local aggregation group are in the Selected state. The Selected states of the local member ports are not affected by the Selected states of the peer member ports.

·     Link aggregation configuration information when the dynamic aggregation mode is used:

[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

 

Aggregation Interface: Bridge-Aggregation1

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x8000, 000f-e234-5678

Local:

  Port                Status   Priority Index    Oper-Key               Flag

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

  HGE1/0/2            S        32768    3        1                      {ACDEF}

  HGE1/0/3            S        32768    4        1                      {ACDEF}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    2        1        0x8000, a4e5-c316-0100 {ACDEF}

  HGE1/0/2            32768    3        1        0x8000, a4e5-c316-0100 {ACDEF}

  HGE1/0/3            32768    4        1        0x8000, a4e5-c316-0100 {ACDEF}

The output shows that the local member ports and the corresponding peer member ports are all Selected. In the dynamic link aggregation mode, each local member port and its peer member port have the same Selected state through exchanging LACPDUs. The user data traffic can be forwarded correctly.

Configuration files

·     Device A:

#

vlan 10

#

interface HundredGigE1/0/4

 port link-mode bridge

 port access vlan 10

#

vlan 20

#

interface HundredGigE1/0/5

 port link-mode bridge

 port access vlan 20

¡     In the static aggregation mode:

#

interface Bridge-Aggregation1

port link-type trunk

port trunk permit vlan 10 20

¡     In the dynamic aggregation mode:

#

interface Bridge-Aggregation1

port link-type trunk

port trunk permit vlan 10 20

link-aggregation mode dynamic

#

interface HundredGigE1/0/1

port link-mode bridge

port link-type trunk

port trunk permit vlan 10 20

port link-aggregation group 1

#

interface HundredGigE1/0/2

port link-mode bridge

port link-type trunk

port trunk permit vlan 10 20

port link-aggregation group 1

#

interface HundredGigE1/0/3

port link-mode bridge

port link-type trunk

port trunk permit vlan 10 20

port link-aggregation group 1

#

·     Device B:

The configuration file on Device B is the same as the configuration file on Device A.

Example: Configuring Layer 3 link aggregation

Network configuration

On the network as shown in Figure 2, perform the following tasks:

·     Configure a Layer 3 dynamic aggregation group on both Device A and Device B.

·     Configure IP addresses and subnet masks for the corresponding Layer 3 aggregate interfaces.

Figure 2 Network diagram

 

Software versions used

This configuration example was created and verified on Release 3606.

Restrictions and guidelines

In a static aggregation group, the Selected state of a port is not affected by whether the peer port is added to an aggregation group and is Selected. As a result, the Selected state of a port might be different from the Selected state of the peer port. When both ends support static aggregation and dynamic aggregation, use dynamic aggregation.

Procedures

1.     Configure Device A:

# Create Layer 3 aggregate interface Route-Aggregation 1. Use one of the following methods as needed.

¡     Use the static aggregation mode to create Layer 3 aggregate interface Route-Aggregation 1.

<DeviceA> system-view

[DeviceA] interface route-aggregation 1

¡     Use the dynamic aggregation mode to create Layer 3 aggregate interface Route-Aggregation 1.

<DeviceA> system-view

[DeviceA] interface route-aggregation 1

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

# Configure an IP address and subnet mask for Layer 3 aggregate interface Route-Aggregation 1.

[DeviceA-Route-Aggregation1] ip address 192.168.1.1 24

[DeviceA-Route-Aggregation1] quit

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

[DeviceA] interface range hundredgige 1/0/1 to hundredgige 1/0/3

[DeviceA-if-range] port link-mode route

[DeviceA-if-range] port link-aggregation group 1

[DeviceA-if-range] quit

2.     Configure Device B in the same way Device A is configured. (Details not shown.)

Verifying the configuration

# Display detailed information about the link aggregation groups on Device A.

·     Link aggregation configuration information when the static aggregation mode is used:

[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: Route-Aggregation1

Aggregation Mode: Static

Loadsharing Type: Shar

  Port             Status  Priority Oper-Key  Role

  HGE1/0/1         S       32768    1         None

  HGE1/0/2         S       32768    1         None

  HGE1/0/3         S       32768    1         None

The output shows that all member ports in the local aggregation group are in Selected state. The Selected states of the local member ports are not affected by the Selected states of the peer member ports.

·     Link aggregation configuration information when the dynamic aggregation mode is used:

[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

 

Aggregate Interface: Route-Aggregation1

Aggregation Mode: Dynamic

Loadsharing Type: Shar

System ID: 0x8000, 000f-e267-6c6a

Local:

  Port                Status   Priority Index    Oper-Key               Flag

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

  HGE1/0/2            S        32768    3        1                      {ACDEF}

  HGE1/0/3            S        32768    4        1                      {ACDEF}

Remote:

  Actor               Priority Index    Oper-Key SystemID               Flag

  HGE1/0/1            32768    2        1        0x8000, 68fa-34f2-0200 {ACDEF}

  HGE1/0/2            32768    3        1        0x8000, 68fa-34f2-0200 {ACDEF}

  HGE1/0/3            32768    4        1        0x8000, 68fa-34f2-0200 {ACDEF}

The output shows that the local member ports and the corresponding peer member ports are all Selected. In the dynamic link aggregation mode, each local member port and its peer member port have the same Selected state through exchanging LACPDUs. The user data traffic can be forwarded correctly.

Configuration files

·     Device A:

#

¡     In the static aggregation mode:

#

interface route-aggregation1

 ip address 192.168.1.1 255.255.255.0

#

¡     In the dynamic aggregation mode:

#

interface route-aggregation1

 ip address 192.168.1.1 255.255.255.0

 link-aggregation mode dynamic

#

interface HundredGigE1/0/1

 port link-mode route

 port link-aggregation group 1

#

interface HundredGigE1/0/2

 port link-mode route

 port link-aggregation group 1

#

interface HundredGigE1/0/3

 port link-mode route

 port link-aggregation group 1

#

 Device B:

The configuration file on Device B is similar as the configuration file on Device A.

Related documentation

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

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