Installation guide

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Device Manager Guide, Cisco ACE 4700 Series Application Control Engine Appliance
OL-26645-02
Chapter 6 Configuring Real Servers and Server Farms
Configuring Health Monitoring
CLI "expect ?" will show both hex-regex and regex for user to configure, irrespective of type(ASCII
or HEX) of send-data configured. TCP probe is created using CLI with Send-data and Expect hex-regex
data with offset as given below:
switch/Admin(config)# probe tcp test1
switch/Admin(config-probe-tcp)# send-data "abcde"
switch/Admin(config-probe-tcp)# expect ?
hex-regex Configure Hex data expected as response
regex Configure probe expected response
switch/Admin(config-probe-tcp)# send-hex-data "abcd"
switch/Admin(config-probe-tcp)# expect ?
hex-regex Configure Hex data expected as response
regex Configure probe expected response
switch/Admin(config-probe-tcp)# expect
Note If send-hex-data is configured then expect hex-regex should be configured. Similarly, if send-data is
configured, expect regex should be configured.
Telnet Probe Attributes
Note Click More Settings to access the additional attributes for the Telnet probe type. By default, ACE
appliance Device Manager hides the probe attributes with default values and the probe attributes which
are not commonly used.
Open Timeout
(Seconds)
Enter the number of seconds to wait when opening a connection with a real
server. Valid entries are integers from 1 to 65535, and the default value is 1.
Expect Regular
Expression
Enter the expected response data from the probe destination. Valid entries
are text strings (quotes allowed) with a maximum of 255 characters.
Expect Regex Offset Enter the number of characters into the received message or buffer where the
ACE is to begin looking for the string specified in the Expect Regular
Expression field. Value entries are integers from 1 to 4000.
Expect Hex Regex Enter the expected response data from the probe destination. The Hex data
entered must be of even numbers and must be a single string consisting of
alphanumeric within the range of 0-9,a-f or A-F, and a maximum of 255
characters.
Expect Hex Regex
Offset
Enter the expected response data in Hex format. The Hex data entered must
be of even numbered size and of maximum size of 254.
Table 6-28 TCP Probe Attributes (continued)
Field Action