Dell 3-DNS Especificaciones descargar pdf (Pagina 263)

Configuring a Redundant System

BIG-IP® Reference Guide 6-15

To synchronize the configuration using the Configuration

utility

1. In the navigation pane, click System.

The Network Map screen opens.

2. Click the Redundant Properties tab.

The Redundant Properties screen opens.

3. Click the Synchronize Configuration button.

To synchronize the configuration from the command line

To synchronize the configuration between two BIG-IP units from the

command line, use the following command:

b config sync all

Task 8: Transitioning from active/standby to active-active

To transition from active/standby to active-active, type the following

command on the active BIG-IP:

b failover standby

This command puts the active BIG-IP into partial active-active mode. To

complete the transition, type in the following command on the other BIG-IP

which now considers itself the active unit.

b failover standby

Now both units are in active-active mode.

Note

This task is not required if you enable active-active in the Configuration

utility. The transition is made during Task 1: Enabling active-active on the

BIG-IP, on page 6-11.

Understanding active-active system fail-over

Before a failure in an active-active installation, one BIG-IP is servicing all

requests for virtual servers configured on unit 1, and the other BIG-IP is

servicing all requests for virtual servers configured on unit 2. If one of the

BIG-IP units fails, the remaining BIG-IP handles all requests for virtual

servers configured to run on unit 1 and also those configured to run on

unit 2. In other words, the surviving BIG-IP is acting as both units 1 and 2.

If the BIG-IP that failed reboots, it re-assumes connections for the unit

number with which it was configured. The BIG-IP that was running as both

units stops accepting connections for the unit number that has resumed

service. Both machines are now active.

When the unit that was running both unit numbers surrenders a unit number

to the rebooted machine, all connections are lost that are now supposed to

run on the rebooted machine, unless they were mirrored connections.

1 2 ... 258 259 260 261 262 263 264 265 266 267 268 ... 425 426

Sin comentarios

Dell 3-DNS Especificaciones Pagina 263