HP H3C S9500 Guide rapide

Operation Manual – HA

H3C S9500 Series Routing Switches Table of Contents

Table of Contents

Chapter 1 HA Configuration.........................................................................................................1-1

1.1 Introduction to HA..............................................................................................................1-1

1.2 Configuring HA...................................................................................................................1-1

1.3 Displaying and Maintaining HA..........................................................................................1-3

1.4 HA Configuration Examples...............................................................................................1-3

1.4.1 Dynamic Upgrade of the System Through HA........................................................1-3

1.4.2 Full Mesh Forwarding Mode Configuration Example..............................................1-4

Operation Manual – HA

H3C S9500 Series Routing Switches Chapter 1 HA Configuration

1-1

Chapter 1 HA Configuration

When configuring HA, go to these sections for information you are interested in:

zIntroduction to HA

zConfiguring HA

zDisplaying and Maintaining HA

zHA Configuration Example

1.1 Introduction to HA

High Availability (HA for short) feature can be used to achieve a higher degree of

system availability. Devices supporting HA are normally equipped with two Switching

and Routing Process Units (SRPU for short), with one being the active main board

(AMB) that works under master mode and the other being the standby main board

(SMB) that works under slave mode. With the synchronization function the SMB can

work under the same system configuration. Thus, in the event of an AMB failure, the

SMB will immediately switch over to function as an AMB (referred to as switchover

hereafter), ensuring that the device works properly and its configuration is

synchronized with that of theAMB.

Switchover occurs in the following cases:

zAMB failure

zThe AMB is plugged out

zSNMP

zManual switchover

A switchover takes place in the following order in the event of an AMB failure:

1) The SMB automatically connects and controls system bus while the original AMB

disconnects from it.

2) The original SMB becomes the new AMB whereas the original AMB automatically

reboots and functions as the new SMB.

We discuss switchover through user command line in this chapter.

1.2 Configuring HA

To do… Use the command… Remarks

Enter system view system-view —

Ignore version check of

the AMB and SMB

slave-ignore-version-ch

eck

Optional

Version check is enabled

by default.

Operation Manual – HA

H3C S9500 Series Routing Switches Chapter 1 HA Configuration

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To do… Use the command… Remarks

Enable the manual

switchover between the

AMB and SMB

slave switchover

[enable ] Optional

Enabled by default

Manually configure

switchover between the

AMB and SMB slave switchover Optional

Manually configure the

SMB restart slave restart Optional

Enable Full Mesh

forwarding enhance mode fullmesh-enhance

{ enable | disable } Required

Disabled by default.

Caution:

zThe SMB does not support any system configuration commands. Therefore, users

cannot execute any commands in the SMB unless it has replaced the original AMB

and has become the new AMB.

zAfter the SMB has restarted, the AMB will perform initial synchronization on the

SMB. During this process if the user presses <Enter>, the system will prompt the

user no command can be input. After the initial synchronization is completed, the

user can execute all the configuration commands in the AMB and the AMB and SMB

will keep a real-time synchronization process, meaning the configuration of the user

on the AMB will be copied to the SMB to ensure the consistency of the current

configuration of the AMB and SMB.

zA switchover capable device cannot be updated with a software specific with

centralized device as this will result in an unavailable system.

zIf only one SRPU is in the slot, the Full Mesh enhance mode does not take effect.

zThe S9505 switch does not support the fullmesh-enhance command.

zWhen the system works in load balancing mode, it activates the Full Mesh enhance

mode if this mode is configured.

zWhen the system works in active and standby mode, it does not activate the Full

Mesh enhance mode if this mode is configured. In this case, you need to switch the

system to the load balancing mode to activate the Full Mesh enhance mode.

Operation Manual – HA

H3C S9500 Series Routing Switches Chapter 1 HA Configuration

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1.3 Displaying and Maintaining HA

To do… Use the command… Remarks

Display the switchover

state display switchover state

[ slot-id ] Available in any view

Display Full Mesh

forwarding information display

fullmesh-enhance Available in any view

1.4 HA Configuration Examples

1.4.1 Dynamic Upgrade of the System Through HA

I. Configuration prerequisites

Dynamic upgrade of image files of theAMB and SMB.

II. Configuration procedure

1) Download the update software

Through remote online update commands, download new application program to the

AMB. Use the FTP, TFTP, or XModem to download the application program to the AMB

and save it in the flash.

2) Copy the software to the SMB

Assume the update application is test.app, slot 0 is theAMB, and slot 1 is the SMB.

<Sysname> copy test.app slot1#flash:/test.app

3) Designate the newly downloaded update application to be the executive software

of the AMB and SMB.

<Sysname> boot-loader file flash:/test.app slot 0 main

<Sysname> boot-loader file slot1#flash:/test.app slot 1 main

4) Restart the SMB.

<Sysname> system-view

[Sysname] slave restart

The slave will reset! Continue?[Y/N]:y

5) Copy the configuration file to the SMB.

If the SMB is working properly, system will prompt that it is in an active state.As long as

the auto-update function is enabled, the configuration file will be copied to the SMB

while the AMB is saving the same file.

[Sysname] slave auto-update config

[Sysname] quit

<Sysname> save

6) Manually configure the switch over between the AMB and SMB.

<Sysname> system-view

Operation Manual – HA

H3C S9500 Series Routing Switches Chapter 1 HA Configuration

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[Sysname] slave switchover

Caution!!! Confirm switch slave to master[Y/N]?y

After the switchover, the original AMB will reset, restart, and update its application file.

Thus, the whole system has its application upgraded dynamically.

1.4.2 Full Mesh Forwarding Mode Configuration Example

I. Configuration prerequisites

zTwo SRPUs work in active and standby mode.

zSet the Full Mesh forwarding to enhance mode to optimize the Full Mesh

forwarding performance in the system.

II. Configuration procedure

# Enter system view.

<Sysname> system-view

# Switch to load balancing mode.

[Sysname] xbar load-balance

# Enable Full Mesh mode.

[Sysname] fullmesh-enhance enable

# Check whether Full Mesh mode is activated.

[Sysname] display fullmesh-enhance

Configuration status: Enabled

Operation status: Active

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