Dell 3-DNS Especificaciones descargar pdf (Pagina 260)

Chapter 6

6-12

To enable active-active from the command line

Set the Common.Bigip.Failover.ActiveMode key to 1. Use the following

commands on each unit to enable active-active mode:

b db set Common.Bigip.Failover.ActiveMode = 1

b failover init

The default for this entry is 0 which indicates that the unit is in

active/standby mode.

Task 2: Configuring an additional floating self IP address

When you configure a redundant system, you enter a pair of shared floating

self IP addresses, one for the external VLAN and one for the internal

VLAN. As defined during Setup utility configuration, the floating self IP

addresses are configured as belonging to unit one and unit two.

In an active-active configuration, each BIG-IP must have its own floating

self IP address on the internal VLAN. This is the address to which the

servers behind the BIG-IP route traffic. For example, you could use

11.12.11.3 as the internal floating self IP address for unit one and 11.12.11.4

as the internal floating self IP address for unit two. Configured correctly,

11.12.11.3 should appear on both units as a floating self IP address

belonging to unit one and 11.12.11.4 should appear on both units as a

floating self IP address belonging to unit two.

Since you already have a floating self IP address for the internal interface

that is configured for unit one and unit two, you only need to create a second

floating IP address for unit two.

To create an additional floating self IP address

On unit two, create the second internal floating self IP address and assign it

to unit two:

b self 11.12.11.4 vlan internal unit 2 floating enable

If the BIG-IP fails over, its shared IP address is assumed by the remaining

unit and the servers continue routing through the same IP address.

You can configure additional shared IP aliases on the external VLANs of

each BIG-IP, as well. This makes it possible for routers to route to a virtual

server using virtual noarp mode.

Task 3: Configuring servers for active-active

In an active-active system, the servers must be logically segregated to accept

connections from one BIG-IP or the other. To do this, set the default route of

some of your servers to the floating self IP address on one unit and the

default route on some of your servers to the floating self IP address on the

other unit (see Task 2: Configuring an additional floating self IP address).

When a unit fails over, the surviving BIG-IP assumes the internal IP alias of

the failed machine, providing each server a default route.

1 2 ... 255 256 257 258 259 260 261 262 263 264 265 ... 425 426

Sin comentarios

Dell 3-DNS Especificaciones Pagina 260