H3C Routers
Ethernet Link Aggregation
Configuration Examples

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contents

Introduction· 1

Prerequisites· 1

Example: Configuring a Layer 3 aggregation group· 1

Network configuration· 1

Software versions used· 1

Restrictions and guidelines· 1

Procedures· 2

Configure Device A· 2

Configure Device B· 2

Verifying the configuration· 2

Configuration files· 3

Related documentation· 4

 

Introduction

The following information provides examples for Ethernet link aggregation.

Prerequisites

This document applies to Comware 9-based router. Procedures and information in the examples might be slightly different depending on the software or hardware version of the router.

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 a Layer 3 aggregation group

Network configuration

On the network shown in Figure 1, perform the following tasks:

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

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

Figure 1 Network diagram

Software versions used

This configuration example was created and verified on R9141P16 of the MSR2630E-X1 device.

Restrictions and guidelines

The Selected state of ports in a static aggregation group is not affected by whether the peer ports are in an aggregation group or in Selected state, Selected ports determined by both ends of the static aggregate link might to be inconsistent. As a best practice, use the dynamic aggregation mode if both ends support static and dynamic link aggregation modes.

Procedures

Configure Device A

# Create a Layer 3 aggregate interface Route-Aggregation 1. (Choose one of the following two methods.)

·     Static aggregation mode.

<DeviceA> system-view

[DeviceA] interface route-aggregation 1

·     Dynamic aggregation mode.

<DeviceA> system-view

[DeviceA] interface route-aggregation 1

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

# Configure an IP address and subnet mask for Route-Aggregation 1.

[DeviceA-Route-Aggregation1] ip address 192.168.1.1 24

[DeviceA-Route-Aggregation1] quit

# Assign Layer 3 Ethernet interfaces GigabitEthernet 1/0/1 through GigabitEthernet 1/0/3 to aggregation group 1.

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

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

[DeviceA-if-range] quit

Configure Device B

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

Verifying the configuration

# Use display link-aggregation verbose to display detailed information about the aggregation groups.

·     Aggregate group information in static aggregation mode

[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: Static

Loadsharing Type: Shar

  Port             Status  Priority Oper-Key

--------------------------------------------------------------------------------

  GE0/0/1          S       32768    1

  GE0/0/2          S       32768    1

  GE0/0/3          S       32768    1

The output shows that the member ports added to the static aggregation group at the local end are all in Selected state, regardless of whether the peer ports are in Selected state.

·     Aggregate group information in dynamic aggregation mode

[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

Creation Mode: Manual

Aggregation Mode: Dynamic

Loadsharing Type: Shar

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

Local:

  Port             Status  Priority Oper-Key  Flag

--------------------------------------------------------------------------------

  GE0/0/1          S       32768    1         {ACDEF}

  GE0/0/2          S       32768    1         {ACDEF}

  GE0/0/3          S       32768    1         {ACDEF}

Remote:

  Actor            Partner Priority Oper-Key  SystemID               Flag

--------------------------------------------------------------------------------

  GE0/0/1          1       32768    1         0x8000, 000f-e267-57ad {ACDEF}

  GE0/0/2          2       32768    1         0x8000, 000f-e267-57ad {ACDEF}

  GE0/0/3          3       32768    1         0x8000, 000f-e267-57ad {ACDEF}

The output shows that the aggregation member ports on both the local and the peer devices are in Selected state. To ensure correct user data forwarding, the devices exchange LACP protocol packets over the dynamic aggregate link to maintain consistency of the aggregation state between their aggregation member ports.

Configuration files

·     Device A:

¡     Static aggregation mode.

#

interface route-aggregation1

 ip address 192.168.1.1 255.255.255.0

#

¡     Dynamic aggregation mode.

#

interface route-aggregation1

 ip address 192.168.1.1 255.255.255.0

 link-aggregation mode dynamic

#

interface GigabitEthernet1/0/1

 port link-mode route

port link-aggregation group 1

#

interface GigabitEthernet1/0/2

 port link-mode route

port link-aggregation group 1

#

interface GigabitEthernet1/0/3

 port link-mode route

port link-aggregation group 1

#

·     Device B:

Configuration files on Device B are similar to Device A.

Related documentation

·     H3C MSR1000[2600][3600] Routers Configuration Guides (V9)

·     H3C MSR1000[2600][3600] Routers Command References (V9)