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68-IRF Configuration Examples

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H3C S12500X-AF
IRF Configuration Examples

No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of New H3C Technologies Co., Ltd.

Except for the trademarks of New H3C Technologies Co., Ltd., any trademarks that may be mentioned in this document are the property of their respective owners.

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

Introduction

This document provides examples for setting up IRF fabrics and configuring link aggregation and routing on the IRF fabrics.

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 IRF.

General restrictions and guidelines

When you set up and configure an IRF fabric, follow the restrictions and guidelines in this section.

This section provides only the basic restrictions and guidelines that ensure a successful IRF deployment. For complete information, see IRF configuration guide for the switch.

Hardware requirements

An S12500X-AF switch can form an IRF fabric only with switches of the same model. In addition, an S12500X-AF switch that uses type-T service modules cannot form an IRF fabric with an S12500X-AF switch that uses any other type of service modules.

An S12500X-AF IRF fabric can contain a maximum of two member devices.

As a best practice, the following card deployment items are the same across member chassis:

· Number of cards installed on each chassis.

· Card models.

· Slot numbers for the same type of cards.

Software requirements

All IRF member devices must run the same system software version.

Member ID restrictions

The value range for IRF member IDs is 1 to 4. On the S12516X-AF switch, the IRF member ID can only be 1 or 3.

Feature compatibility and configuration restrictions

Make sure the feature settings in Table 1 are the same across member devices.

Table 1 IRF and feature compatibility

Feature	Command
Enhanced ECMP mode	ecmp mode enhanced
Support for the IPv6 routes with prefixes longer than 64 bits	switch-routing-mode
System operating mode	system-working-mode
VXLAN hardware resource mode	hardware-resource vxlan

IRF physical interface requirements

Use the QSFP28 ports as IRF physical interfaces. The 10-GE or 25-GE breakout interfaces of a QSFP28 port cannot be used as IRF physical interfaces.

You can bind a maximum of eight physical interfaces to an IRF port. As a best practice to improve high availability, bind multiple physical interfaces on different cards to an IRF port.

Connecting IRF ports

When you connect two neighboring IRF members, connect the physical interfaces of IRF-port 1 on one member to the physical interfaces of IRF-port 2 on the other.

Licensing requirements

For a license-based feature to run correctly on an IRF fabric, make sure the licenses installed for the feature on all member devices are the same. For more information about feature licensing, see Fundamentals Configuration Guide.

Example: Setting up a LACP MAD-enabled two-chassis IRF fabric

Network configuration

As shown in Figure 1:

· Set up a two-chassis IRF fabric at the core layer of the network.

· Use multichassis link aggregations to connect the IRF fabric to the access switches and the upstream egress routers.

· Use LACP MAD to detect IRF split.

· Run OSPF between the IRF fabric and the egress routers.

Figure 1 LACP MAD-enabled two-chassis IRF fabric

Table 2 VLAN and IP address assignment

Device	VLAN interface	IP address
Router A:
	VLAN-interface 30	172.24.2.2/24
	VLAN-interface 40	172.24.40.2/24
	VLAN-interface 50	172.24.1.2/24
Router B:
	VLAN-interface 30	172.24.2.3/24
	VLAN-interface 41	172.24.41.3/24
	VLAN-interface 50	172.24.4.2/24
IRF fabric:
	VLAN-interface 10	172.24.10.254/24
	VLAN-interface 20	172.24.20.254/24
	VLAN-interface 40	172.24.40.254/24
	VLAN-interface 41	172.24.41.254/24

Analysis

To avoid single points of failure, use multichassis link aggregations to connect the IRF fabric to the downstream and upstream devices.

For LACP MAD to run correctly, you must make sure the intermediate device supports extended LACPDUs for LACP MAD. In this example, SW 1 is used as the intermediate device for LACP MAD.

You do not need to run LACP MAD on all link aggregations. You can detect IRF split effectively by running LACP MAD on one dynamic link aggregation.

Software versions used

This configuration example was created and verified on R3203.

Restrictions and guidelines

When you configure LACP MAD on a link aggregation, follow these restrictions and guidelines:

· The link aggregation must use dynamic aggregation mode.

· The link aggregation must have a minimum of one member link from each member chassis.

· If the intermediate device is also an IRF fabric, you must assign the two IRF fabrics different domain IDs for correct split detection.

Procedures

Setting up the IRF fabric

1. Configure Device A:

# Assign member ID 1 to Device A.

<DeviceA> system-view

[DeviceA] irf member 1

# Bind HundredGigE 2/0/1 and HundredGigE 3/0/1 to IRF-port 2.

[DeviceA] irf-port 2

[DeviceA-irf-port2] port group interface hundredgige 2/0/1

[DeviceA-irf-port2] port group interface hundredgige 3/0/1

[DeviceA-irf-port2] quit

# Save the running configuration to the main next-startup configuration file before changing the operating mode to IRF.

IMPORTANT:

The mode change requires a system reboot, which causes all unsaved settings to be lost.

[DeviceA] save

# Enable IRF mode.

[DeviceA] chassis convert mode irf

The device will switch to IRF mode and reboot.

You are recommended to save the current running configuration and specify the configuration file for the next startup. Continue? [Y/N]:y

Do you want to convert the content of the next startup configuration file cfa0:/

irf.cfg to make it available in stack mode? [Y/N]:y

Now rebooting, please wait...

2. Configure Device B:

# Assign member ID 2 to Device B.

<DeviceB> system-view

[DeviceB] irf member 2

# Bind HundredGigE 2/0/1 and HundredGigE 3/0/1 to IRF-port 1.

[DeviceB] irf-port 1

[DeviceB-irf-port1] port group interface hundredgige 2/0/1

[DeviceB-irf-port1] port group interface hundredgige 3/0/1

[DeviceB-irf-port1] quit

# Save the configuration.

[DeviceB] save

# Connect the physical interfaces of IRF-port 2 on Device A to the physical interfaces of IRF-port 1 on Device B, as shown in Figure 1. (Details not shown.)

# Enable IRF mode.

[DeviceB] chassis convert mode irf

The device will switch to IRF mode and reboot.

You are recommended to save the current running configuration and specify the configuration file for the next startup. Continue? [Y/N]:y

Do you want to convert the content of the next startup configuration file cfa0:/

irf.cfg to make it available in stack mode? [Y/N]:y

Now rebooting, please wait...

Configuring software features

This example provides only basic software feature configuration.

Configuring the IRF fabric

After the IRF fabric is formed, the master's system name becomes the fabric's system name. You can configure software features on the fabric as you do on a standalone device.

1. Configure link aggregations:

# Create a Layer 2 dynamic aggregate interface named Bridge-Aggregation 1. Enable LACP MAD on the aggregate interface.

<DeviceA> system-view

[DeviceA] interface bridge-aggregation 1

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

[DeviceA-Bridge-Aggregation1] mad enable

You need to assign a domain ID (range: 0-4294967295)

[Current domain is: 0]:

The assigned domain ID is: 0

[DeviceA-Bridge-Aggregation1] quit

# Assign the downlink ports that connect to SW 1 to the aggregation group of Bridge-Aggregation 1.

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

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

[DeviceA-HundredGigE1/3/0/3] quit

[DeviceA] interface hundredgige 2/3/0/3

[DeviceA-HundredGigE2/3/0/3] port link-aggregation group 1

[DeviceA-HundredGigE2/3/0/3] quit

# Create Bridge-Aggregation 2. Assign the downlink ports that connect to SW 2 to the aggregation group.

[DeviceA] interface bridge-aggregation 2

[DeviceA-Bridge-Aggregation2] quit

[DeviceA] interface hundredgige 1/3/0/4

[DeviceA-HundredGigE1/3/0/4] port link-aggregation group 2

[DeviceA-HundredGigE1/3/0/4] quit

[DeviceA] interface hundredgige 2/3/0/4

[DeviceA-HundredGigE2/3/0/4] port link-aggregation group 2

[DeviceA-HundredGigE2/3/0/4] quit

# Create Bridge-Aggregation 1023. Assign the uplink ports that connect to Router A to Bridge-Aggregation 1023.

[DeviceA] interface bridge-aggregation 1023

[DeviceA-Bridge-Aggregation1023] quit

[DeviceA] interface hundredgige 1/3/0/7

[DeviceA-HundredGigE1/3/0/7] port link-aggregation group 1023

[DeviceA-HundredGigE1/3/0/7] quit

[DeviceA] interface hundredgige 2/3/0/7

[DeviceA-HundredGigE2/3/0/7] port link-aggregation group 1023

[DeviceA-HundredGigE2/3/0/7] quit

# Create Bridge-Aggregation 1024. Assign the uplink ports that connect to Router B to Bridge-Aggregation 1024.

[DeviceA] interface bridge-aggregation 1024

[DeviceA-Bridge-Aggregation1024] quit

[DeviceA] interface hundredgige 1/3/0/8

[DeviceA-HundredGigE1/3/0/8] port link-aggregation group 1024

[DeviceA-HundredGigE1/3/0/8] quit

[DeviceA] interface hundredgige 2/3/0/8

[DeviceA-HundredGigE2/3/0/8] port link-aggregation group 1024

[DeviceA-HundredGigE2/3/0/8] quit

2. Configure VLANs, ports, and IP addresses:

# Create VLAN 10, assign an IP address to VLAN-interface 10, and assign Bridge-Aggregation 1 to VLAN 10.

[DeviceA]vlan 10

[DeviceA-vlan10] quit

[DeviceA] interface vlan-interface 10

[DeviceA-Vlan-interface10] ip address 172.24.10.254 24

[DeviceA-Vlan-interface10] quit

[DeviceA] interface bridge-aggregation 1

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

[DeviceA-Bridge-Aggregation1] undo port trunk permit vlan 1

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

[DeviceA-Bridge-Aggregation1] quit

# Create VLAN 20, assign an IP address to VLAN-interface 20, and assign Bridge-Aggregation 2 to VLAN 20.

[DeviceA] vlan 20

[DeviceA-vlan20] quit

[DeviceA] interface vlan-interface 20

[DeviceA-Vlan-interface20] ip address 172.24.20.254 24

[DeviceA-Vlan-interface20] quit

[DeviceA] interface bridge-aggregation 2

[DeviceA-Bridge-Aggregation2] port link-type trunk

[DeviceA-Bridge-Aggregation2] undo port trunk permit vlan 1

[DeviceA-Bridge-Aggregation2] port trunk permit vlan 20

[DeviceA-Bridge-Aggregation2] quit

# Create VLAN 40, assign an IP address to VLAN-interface 40, and assign Bridge-Aggregation 1023 to VLAN 40.

[DeviceA] vlan 40

[DeviceA-vlan40] quit

[DeviceA] interface vlan-interface 40

[DeviceA-Vlan-interface40] ip address 172.24.40.254 24

[DeviceA-Vlan-interface40] quit

[DeviceA] interface bridge-aggregation 1023

[DeviceA-Bridge-Aggregation1023] port access vlan 40

[DeviceA-Bridge-Aggregation1023] quit

# Create VLAN 41, assign an IP address to VLAN-interface 41, and assign Bridge-Aggregation 1024 to VLAN 41.

[DeviceA] vlan 41

[DeviceA-vlan41] quit

[DeviceA] interface vlan-interface 41

[DeviceA-Vlan-interface41] ip address 172.24.41.254 24

[DeviceA-Vlan-interface41] quit

[DeviceA] interface bridge-aggregation 1024

[DeviceA-Bridge-Aggregation1024] port access vlan 41

[DeviceA-Bridge-Aggregation1024] quit

3. Configure OSPF between the IRF fabric and the egress routers.

[DeviceA] ospf

[DeviceA-ospf-1] import-route direct

[DeviceA-ospf-1] area 0

[DeviceA-ospf-1-area-0.0.0.0] network 172.24.40.0 0.0.0.255

[DeviceA-ospf-1-area-0.0.0.0] network 172.24.41.0 0.0.0.255

[DeviceA-ospf-1-area-0.0.0.0] quit

[DeviceA-ospf-1] quit

Configuring SW 1

1. Configure a link aggregation:

# Create Bridge-Aggregation 1 and enable the dynamic aggregation mode. You must enable the dynamic aggregation mode because this link aggregation will be used for LACP MAD.

<SW1> system-view

[SW1] interface bridge-aggregation 1

[SW1-Bridge-Aggregation1] link-aggregation mode dynamic

[SW1-Bridge-Aggregation1] quit

# Assign the uplink ports that connect to the IRF fabric to Bridge-Aggregation 1.

[SW1] interface hundredgige 1/0/1

[SW1-HundredGigE1/0/1] port link-aggregation group 1

[SW1-HundredGigE1/0/1] quit

[SW1] interface hundredgige 1/0/2

[SW1-HundredGigE1/0/2] port link-aggregation group 1

[SW1-HundredGigE1/0/2] quit

2. Configure VLANs, ports, and IP addresses:

# Create all VLANs.

[SW1] vlan all

# Configure VLAN settings on the uplink aggregate interface that connects to the IRF fabric.

[SW1] interface bridge-aggregation 1

[SW1-Bridge-Aggregation1] port link-type trunk

[SW1-Bridge-Aggregation1] undo port trunk permit vlan 1

[SW1-Bridge-Aggregation1] port trunk permit vlan 10

[SW1-Bridge-Aggregation1] quit

# Configure VLAN settings on the port that connects to Server Group 1.

[SW1] interface hundredgige 1/0/3

[SW1-HundredGigE1/0/3] port link-type trunk

[SW1-HundredGigE1/0/3] port trunk permit vlan all

[SW1-HundredGigE1/0/3] undo port trunk permit vlan 1

[SW1-HundredGigE1/0/3] quit

Configuring SW 2

1. Configure a link aggregation:

# Create Bridge-Aggregation 1.

<SW2>system-view

[SW2] interface bridge-aggregation 1

[SW2-Bridge-Aggregation1] quit

# Assign the uplink ports that connect to the IRF fabric to Bridge-Aggregation 1.

[SW2] interface hundredgige 1/0/1

[SW2-HundredGigE1/0/1] port link-aggregation group 1

[SW2-HundredGigE1/0/1] quit

[SW2] interface hundredgige 1/0/2

[SW2-HundredGigE1/0/2] port link-aggregation group 1

[SW2-HundredGigE1/0/2] quit

2. Configure VLANs, ports, and IP addresses:

# Create all VLANs.

[SW2] vlan all

# Configure VLAN settings on the uplink aggregate interface that connects to the IRF fabric.

[SW2] interface bridge-aggregation 1

[SW2-Bridge-Aggregation1] port link-type trunk

[SW2-Bridge-Aggregation1] undo port trunk permit vlan 1

[SW2-Bridge-Aggregation1] port trunk permit vlan 20

[SW2-Bridge-Aggregation1] quit

# Configure VLAN settings on the port that connects to Server Group 2.

[SW2] interface hundredgige 1/0/3

[SW2-HundredGigE1/0/3] port link-type trunk

[SW2-HundredGigE1/0/3] port trunk permit vlan all

[SW2-HundredGigE1/0/3] undo port trunk permit vlan 1

[SW2-HundredGigE1/0/3] quit

Configuring Router A

In this example, the egress router configuration only includes the connection to the IRF fabric.

1. Configure link aggregations:

# Create Bridge-Aggregation 1. Assign the downlink ports that connect to the IRF fabric to Bridge-Aggregation 1.

<RouterA> system-view

[RouterA] interface bridge-aggregation 1

[RouterA-Bridge-Aggregation1] quit

[RouterA] interface hundredgige 4/0/1

[RouterA-HundredGigE4/0/1] port link-mode bridge

[RouterA-HundredGigE4/0/1] port link-aggregation group 1

[RouterA-HundredGigE4/0/1] quit

[RouterA] interface hundredgige 2/0/1

[RouterA-HundredGigE2/0/1] port link-mode bridge

[RouterA-HundredGigE2/0/1] port link-aggregation group 1

[RouterA-HundredGigE2/0/1] quit

# Create Bridge-Aggregation 2. Assign the ports that connect to Router B to Bridge-Aggregation 2.

[RouterA] interface bridge-aggregation 2

[RouterA-Bridge-Aggregation2] quit

[RouterA] interface hundredgige 4/0/2

[RouterA-HundredGigE4/0/2] port link-mode bridge

[RouterA-HundredGigE4/0/2] port link-aggregation group 2

[RouterA-HundredGigE4/0/2] quit

[RouterA] interface hundredgige 2/0/2

[RouterA-HundredGigE2/0/2] port link-mode bridge

[RouterA-HundredGigE2/0/2] port link-aggregation group 2

[RouterA-HundredGigE2/0/2] quit

2. Configure VLANs, ports, and IP addresses:

# Create VLAN 40, assign an IP address to VLAN-interface 40, and assign Bridge-Aggregation 1 to VLAN 40.

[RouterA] vlan 40

[RouterA-vlan40] quit

[RouterA] interface vlan-interface 40

[RouterA-vlan-interface40] ip address 172.24.40.2 24

[RouterA-vlan-interface40] quit

[RouterA] interface bridge-aggregation 1

[RouterA-Bridge-Aggregation1] port access vlan 40

[RouterA-Bridge-Aggregation1] quit

# Create VLAN 30, assign an IP address to VLAN-interface 30, and assign Bridge-Aggregation 2 to VLAN 30.

[RouterA] vlan 30

[RouterA-vlan30] quit

[RouterA] interface vlan-interface 30

[RouterA-vlan-interface30] ip address 172.24.2.2 24

[RouterA-vlan-interface30] quit

[RouterA] interface bridge-aggregation 2

[RouterA-Bridge-Aggregation2] port link-type access

[RouterA-Bridge-Aggregation2] port access vlan 30

[RouterA-Bridge-Aggregation2] quit

# Create VLAN 50, assign an IP address to VLAN-interface 50, and assign HundredGigE 4/0/3 to VLAN 50.

[RouterA] vlan 50

[RouterA-vlan50] quit

[RouterA] interface vlan-interface 50

[RouterA-vlan-interface50] ip address 172.24.1.2 24

[RouterA-vlan-interface50] quit

[RouterA] interface hundredgige 4/0/3

[RouterA-HundredGigE4/0/3] port link-mode bridge

[RouterA-HundredGigE4/0/3] port access vlan 50

[RouterA-HundredGigE4/0/3] quit

3. Configure OSPF between Router A and the IRF fabric.

[RouterA] ospf

[RouterA-ospf-1] import-route direct

[RouterA-ospf-1] area 0

[RouterA-ospf-1-area-0.0.0.0] network 172.24.40.0 0.0.0.255

[RouterA-ospf-1-area-0.0.0.0] network 172.24.2.0 0.0.0.255

[RouterA-ospf-1-area-0.0.0.0] quit

[RouterA-ospf-1] quit

Configuring Router B

In this example, the egress router configuration only includes the connection to the IRF fabric.

1. Configure link aggregations:

# Create Bridge-Aggregation 1. Assign the downlink ports that connect to the IRF fabric to Bridge-Aggregation 1.

<RouterB> system-view

[RouterB] interface bridge-aggregation 1

[RouterB-Bridge-Aggregation1] quit

[RouterB] interface hundredgige 4/0/1

[RouterB-HundredGigE4/0/1] port link-mode bridge

[RouterB-HundredGigE4/0/1] port link-aggregation group 1

[RouterB-HundredGigE4/0/1] quit

[RouterB] interface hundredgige 2/0/1

[RouterB-HundredGigE2/0/1] port link-mode bridge

[RouterB-HundredGigE2/0/1] port link-aggregation group 1

[RouterB-HundredGigE2/0/1] quit

# Create Bridge-Aggregation 2. Assign the ports that connect to Router A to Bridge-Aggregation 2.

[RouterB] interface bridge-aggregation 2

[RouterB-Bridge-Aggregation2] quit

[RouterB] interface hundredgige 4/0/2

[RouterB-HundredGigE4/0/2] port link-mode bridge

[RouterB-HundredGigE4/0/2] port link-aggregation group 2

[RouterB-HundredGigE4/0/2] quit

[RouterB] interface hundredgige 2/0/2

[RouterB-HundredGigE2/0/2] port link-mode bridge

[RouterB-HundredGigE2/0/2] port link-aggregation group 2

[RouterB-HundredGigE2/0/2] quit

2. Configure VLANs, ports, and IP addresses:

# Create VLAN 41, assign an IP address to VLAN-interface 41, and assign Bridge-Aggregation 1 to VLAN 41.

[RouterB] vlan 41

[RouterB-vlan41] quit

[RouterB] interface vlan-interface 41

[RouterB-vlan-interface41] ip address 172.24.41.3 24

[RouterB-vlan-interface41] quit

[RouterB] interface bridge-aggregation 1

[RouterB-Bridge-Aggregation1] port access vlan 41

[RouterB-Bridge-Aggregation1] quit

# Create VLAN 30, assign an IP address to VLAN-interface 30, and assign Bridge-Aggregation 2 to VLAN 30.

[RouterB] vlan 30

[RouterB-vlan30] quit

[RouterB] interface vlan-interface 30

[RouterB-vlan-interface30] ip address 172.24.2.3 24

[RouterB-vlan-interface30] quit

[RouterB] interface bridge-aggregation 2

[RouterB-Bridge-Aggregation2] port link-type access

[RouterB-Bridge-Aggregation2] port access vlan 30

[RouterB-Bridge-Aggregation2] quit

# Create VLAN 50, assign an IP address to VLAN-interface 50, and assign HundredGigE 4/0/3 to VLAN 50.

[RouterB] vlan 50

[RouterB-vlan50] quit

[RouterB] interface vlan-interface 50

[RouterB-vlan-interface50] ip address 172.24.4.3 24

[RouterB-vlan-interface50] quit

[RouterB] interface hundredgige 4/0/3

[RouterB-HundredGigE4/0/3] port link-mode bridge

[RouterB-HundredGigE4/0/3] port access vlan 50

[RouterB-HundredGigE4/0/3] quit

3. Configure OSPF between Router B and the IRF fabric.

[RouterB] ospf

[RouterB-ospf-1] import-route direct

[RouterB-ospf-1] area 0

[RouterB-ospf-1-area-0.0.0.0] network 172.24.41.0 0.0.0.255

[RouterB-ospf-1-area-0.0.0.0] network 172.24.2.0 0.0.0.255

[RouterB-ospf-1-area-0.0.0.0] quit

[RouterB-ospf-1] quit

Verifying the configuration

Verify the IRF setup, multichassis link aggregation configuration, and the IRF link redundancy backup function.

Verifying the IRF setup

# Verify that the IRF fabric has been formed.

[DeviceA] display irf

MemberID Slot Role Priority CPU-Mac Description

*+1 0 Master 1 0210-fc01-0000 ---

2 0 Standby 1 0210-fc02-0000 ---

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

* indicates the device is the master.

+ indicates the device through which the user logs in.

The Bridge MAC of the IRF is: 3822-d60f-2800

Auto upgrade : yes

Mac persistent : always

Domain ID : 0

Auto merge : yes

The command output shows that the member chassis have formed an IRF fabric.

Verifying the link backup function of multichassis aggregations

# Shut down HundredGigE 1/3/0/8, the port connected to the egress router.

[DeviceA] interface hundredgige 1/3/0/8

[DeviceA-HundredGigE1/3/0/8] shutdown

# Ping an IP address on the public network from a PC in Server Group 1.

C:\Users>ping 202.108.22.5 -t

Pinging 202.108.22.5 with 32 bytes of data:

Reply from 202.108.22.5: bytes=32 time=1ms TTL=122

Reply from 202.108.22.5: bytes=32 time=13ms TTL=122

Reply from 202.108.22.5: bytes=32 time<1ms TTL=122

Request timed out.

Reply from 202.108.22.5: bytes=32 time<1ms TTL=122

The output shows that the address can be pinged after transient traffic disruption.

# Bring up HundredGigE 1/3/0/8 and shut down HundredGigE 2/3/0/8.

[DeviceA-HundredGigE1/3/0/8] undo shutdown

[DeviceA-HundredGigE1/3/0/8] quit

[DeviceA] interface hundredgige 2/3/0/8

[DeviceA-HundredGigE2/3/0/8] shutdown

# Ping the IP address on the public network from the PC.

C:\Users>ping 202.108.22.5 -t

Pinging 202.108.22.5 with 32 bytes of data:

Reply from 202.108.22.5: bytes=32 time=1ms TTL=122

Reply from 202.108.22.5: bytes=32 time=13ms TTL=122

Reply from 202.108.22.5: bytes=32 time<1ms TTL=122

Request timed out.

Reply from 202.108.22.5: bytes=32 time<1ms TTL=122

The output shows that the address can be pinged after transient traffic disruption.

Verifying the link backup function of IRF connections

# Verify that the IRF fabric is integrated and can forward traffic across member chassis after one IRF connection cable is removed. (Details not shown.)

Configuration files

· IRF fabric:

irf mac-address persistent always

irf auto-update enable

irf auto-merge enable

undo irf link-delay

irf member 1 priority 1

irf member 2 priority 1

ospf 1

import-route direct

area 0.0.0.0

network 172.24.40.0 0.0.0.255

network 172.24.41.0 0.0.0.255

vlan 10

vlan 20

vlan 40

vlan 41

irf-port1/2

port group interface HundredGigE1/2/0/1 mode enhanced

port group interface HundredGigE1/3/0/1 mode enhanced

irf-port2/1

port group interface HundredGigE2/2/0/1 mode enhanced

port group interface HundredGigE2/3/0/1 mode enhanced

interface Bridge-Aggregation1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 10

link-aggregation mode dynamic

mad enable

interface Bridge-Aggregation2

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 20

interface Bridge-Aggregation1023

port access vlan 40

interface Bridge-Aggregation1024

port access vlan 41

interface Vlan-interface10

ip address 172.24.10.254 255.255.255.0

interface Vlan-interface20

ip address 172.24.20.254 255.255.255.0

interface Vlan-interface40

ip address 172.24.40.254 255.255.255.0

interface HundredGigE1/3/0/3

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 10

port link-aggregation group 1

interface HundredGigE1/3/0/4

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 20

port link-aggregation group 2

interface HundredGigE1/3/0/7

port link-mode bridge

port access vlan 40

port link-aggregation group 1023

interface HundredGigE1/3/0/8

port link-mode bridge

port access vlan 41

port link-aggregation group 1024

interface HundredGigE2/3/0/3

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 10

port link-aggregation group 1

interface HundredGigE2/3/0/4

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 20

port link-aggregation group 2

interface HundredGigE2/3/0/7

port link-mode bridge

port access vlan 40

port link-aggregation group 1023

interface HundredGigE2/3/0/8

port link-mode bridge

port access vlan 41

port link-aggregation group 1024

· SW 1:

vlan 10

interface Bridge-Aggregation1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 10

link-aggregation mode dynamic

interface HundredGigE1/0/1

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 10

port link-aggregation group 1

interface HundredGigE1/0/2

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 10

port link-aggregation group 1

interface HundredGigE1/0/3

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 2 to 4094

· SW 2:

vlan 20

interface Bridge-Aggregation1

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 20

interface HundredGigE1/0/1

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 20

port link-aggregation group 1

interface HundredGigE1/0/2

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 20

port link-aggregation group 1

interface HundredGigE1/0/3

port link-mode bridge

port link-type trunk

undo port trunk permit vlan 1

port trunk permit vlan 2 to 4094

· Router A:

ospf 1

import-route direct

area 0.0.0.0

network 172.24.2.0 0.0.0.255

network 172.24.40.0 0.0.0.255

vlan 30

vlan 40

vlan 50

interface Bridge-Aggregation1

port access vlan 40

interface Bridge-Aggregation2

port access vlan 30

interface Vlan-interface30

ip address 172.24.2.2 255.255.255.0

interface Vlan-interface40

ip address 172.24.40.2 255.255.255.0

interface Vlan-interface50

ip address 172.24.1.2 255.255.255.0

interface HundredGigE2/0/1

port link-mode bridge

port access vlan 40

port link-aggregation group 1

interface HundredGigE2/0/2

port link-mode bridge

port access vlan 30

port link-aggregation group 2

interface HundredGigE4/0/1

port link-mode bridge

port access vlan 40

port link-aggregation group 1

interface HundredGigE4/0/2

port link-mode bridge

port access vlan 30

port link-aggregation group 2

interface HundredGigE4/0/3

port link-mode bridge

port access vlan 50

· Router B:

ospf 1

import-route direct

area 0.0.0.0

network 172.24.2.0 0.0.0.255

network 172.24.41.0 0.0.0.255

vlan 30

vlan 41

vlan 50

interface Bridge-Aggregation1

port access vlan 41

interface Bridge-Aggregation2

port access vlan 30

interface Vlan-interface30

ip address 172.24.2.3 255.255.255.0

interface Vlan-interface41

ip address 172.24.41.3 255.255.255.0

interface Vlan-interface50

ip address 172.24.4.3 255.255.255.0

interface HundredGigE2/0/1

port link-mode bridge

port access vlan 41

port link-aggregation group 1

interface HundredGigE2/0/2

port link-mode bridge

port access vlan 30

port link-aggregation group 2

interface HundredGigE4/0/1

port link-mode bridge

port access vlan 41

port link-aggregation group 1

interface HundredGigE4/0/2

port link-mode bridge

port access vlan 30

port link-aggregation group 2

interface HundredGigE4/0/3

port link-mode bridge

port access vlan 50

H3C S12500X-AF Switch Series Configuration Examples(R320x)-6W100

Configuring the IRF fabric

Configuring SW 1

Configuring SW 2

Configuring Router A

Configuring Router B

Verifying the IRF setup

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