Installation guide

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Device Manager Guide, Cisco ACE 4700 Series Application Control Engine Appliance
OL-26645-02
Chapter 12 Configuring Traffic Policies
Setting Match Conditions for Class Maps
Table 12-7 Layer 7 Server Load Balancing Class Map Match Conditions
Match Condition Description
Class Map A class map is to be used to establish a match condition.
In the Class Map field, select the class map to apply to this match condition.
HTTP Content Specific content contained within the HTTP entity-body is used to establish a match condition.
1. In the Content Expression field, enter the content that is to be matched. Valid entries are
alphanumeric strings from 1 to 255 characters.
2. In the Content Offset (Bytes) field, enter the number of bytes to be ignored starting with the
first byte of the Message body, after the empty line (CR,LF,CR,LF) between the headers and
the body of the message. Valid entries are integers from 1 to 255.
HTTP Cookie An HTTP cookie is to be used to establish a match condition.
1. In the Cookie Name field, enter a unique cookie name. Valid entries are unquoted text strings
with no spaces and a maximum of 64 alphanumeric characters.
2. In the Cookie Value field, enter a unique cookie value expression. Valid entries are unquoted
text strings with no spaces and a maximum of 255 alphanumeric characters.
3. In the Secondary Cookie Matching check box, do one of the following:
– Clear the check box to indicate that the cookie being defined is a primary cookie.
– Check the check box to indicate that the cookie being defined is a secondary cookie. You
can specify the delimiters for cookies in a URL string by using an HTTP parameter map
(see the “Configuring HTTP Parameter Maps” section on page 8-2).
HTTP Header An HTTP header is to be used to establish a match condition.
1. In the Header Name field, specify the header to match in one of the following ways:
– To specify an HTTP header that is not one of the standard HTTP headers, select the first
radio button, and then enter the HTTP header name in the Header Name field. Valid
entries are unquoted text strings with no spaces and a maximum of 64 characters.
– To specify a standard HTTP header, click the second radio button, and then select an
HTTP header from the list.
2. In the Header Value (Bytes) field, enter the header value expression string to compare against
the value in the specified field in the HTTP header. Valid entries are text strings with a
maximum of 255 alphanumeric characters. The ACE supports regular expressions for
matching. If the string includes spaces, enclose the string in quotes. See Table 12-33 for a list
of the supported characters that you can use in regular expressions.