With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cslbxHttpExpressionFieldName
Cisco Server Load Balancing Http Expression Field Name
1.3.6.1.4.1.9.9.254.1.5.2.1.3
The HTTP Cookie Name or Header Name. The SLB device will parse the HTTP packets for this field name. This object is not used for the Map type of 'urlMap', since there is only one HTTP URL field in a HTTP request.
Back to CISCO-SLB-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cslbxHttpExpressionFieldName on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.