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Pools

BIG-IP® Reference Guide 4-25

You can turn off a persist mask for a pool by using the none option in place

of the simple_mask mask. To turn off the persist mask that you set in the

preceding example, use the following command:

b pool my_pool modify { simple_mask none }

To display all persistence information for the pool named my_pool, use the

show option:

b pool my_pool persist show

HTTP cookie persistence

You can set up the BIG-IP to use HTTP cookie persistence. This method of

persistence uses an HTTP cookie stored on a client’s computer to allow the

client to reconnect to the same server previously visited at a web site.

There are four types of cookie persistence available:

• Insert mode

•Rewrite mode

•Passive mode

• Hash mode

The mode you choose affects how the cookie is handled by the BIG-IP when

it is returned to the client.

Insert mode

If you specify Insert mode, the information about the server to which the

client connects is inserted in the header of the HTTP response from the

server as a cookie. The cookie is named BIGipServer<pool_name>, and it

includes the address and port of the server handling the connection. The

expiration date for the cookie is set based on the timeout configured on the

BIG-IP.

To activate Insert mode using the Configuration utility

1. In the navigation pane, click Pools.

The Pools screen opens.

2. In the Pools list, click the pool for which you want to set up Insert

mode.

The properties screen opens.

3. Click the Persistence tab.

The Persistence screen opens.

4. Click the Active HTTP Cookie button.

5. Select Insert mode from the Method list.

6. Type the timeout value in days, hours, minutes, and seconds. This

value determines how long the cookie lives on the client computer

before it expires.

7. Click the Apply button.

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