Table Of Contents

Header-Field Group Configuration Mode Commands

(config-header-field-group) description

(config-header-field-group) header-field

(config-header-field-group) no

Header-Field Group Configuration Mode Commands

Header-field group configuration mode allows you to configure a request header-field group. A request header-field group contains a list of defined header-field entries used by the content rule lookup process. Each header-field group is given a unique name so different content rules can use them. A group can contain several header-field entries.

To access header-field-group configuration mode, use the header-field-group command from configuration modes except boot and RMON modes. The prompt changes to (config-header-field-group [group_name]). You can also use this command in header-field-group mode to access another group. For information about commands available in this mode, see the following commands.

Use the no form of this command to delete an existing header-field group.

header-field-group group_name
no header-field-group group_name

Syntax Description

group_name

The header-field group that you want to configure. You must define a unique name for each header-field group so different content rules can use the groups. Enter a text string with a maximum of 32 characters. To see an existing list of header-field groups, enter: header-field-group ?

Usage Guidelines

The CSS supports a maximum number of 1024 header field groups, with a maximum of 4096 header field entries.

When there is more than one header field entry in a group, each header field entry must be successfully matched before the CSS uses the associated content rule.

Related Commands

show header-field-group
(config-owner-content) header-field-rule

(config-header-field-group) description

To provide a description for a header-field group, use the description command. Use the no form of this command to delete a description for a header-field group.

description "text"
no description

Syntax Description

text	A description for the header-field group. Enter a quoted text string with a maximum length of 64 characters.

Related Commands

show header-field-group

(config-header-field-group) header-field

To define a header-field entry in a header-field group, use the header-field command. A header-field entry contains a header-field name, field type to be used, an operation to be performed, the header-string to be searched for, and an optional search length.

Use the no form of this command to delete a header-field entry for a header-field group.

header-field name field_type operator
no header-field name

Syntax Description

name	The name uniquely identifies the header-field entry. Enter the name as a string from 1 to 31 characters. You must define a header-field entry name because the CSS is able to use the same field type multiple times in a header-field group.
field_type	The field type includes a request line and all the commonly used header fields in an HTTP request header. Enter one of the following: •accept •cache-control •charset •connection •cookies •encoding •host •language •msisdn •pragma •referer •request-line •user-agent
operator	Enter one of the following operators: •exist|not-exist. Use the exist and not-exist operators to check whether a specified header field exists in a content request header. •equal |not-equal {"header_string"}. Use the equal and not-equal operators to match a defined header_string to the contents of the specified header field, and determine whether it is equal to the header string. Enter the header_string as a quoted text string with a maximum of 31 characters including spaces. •contain |not-contain {"header_string" {search_length}}. Use the contain and not-contain operators to match the configured header_string to a substring in the contents of the specified field type, and determine whether its contents contain the header_string. Enter the header_string as a quoted text string with a maximum of 31 characters including spaces. You may include an optional search_length to define the header field portion to be used for the operation. If you do not define a search length, the CSS uses the entire header field (delimited by a CR and LF) for the operation. To define the search length, enter a number from 0 to 1024.

Usage Guidelines

If a header-field group contains multiple header-field entries, a content request must match each entry for the rule to be used.

Related Commands

show header-field-group

(config-header-field-group) no

To negate a command or set it to its default, use the no command. For information on general no commands you can use in this mode, see the general no command. The following options are available in header-field-group mode.

Syntax Description

no acl index	Deletes an ACL
no description	Removes a description for a header-field group
no header-field name	Removes a header-field entry
no header-field-group name	Removes a header-field group