--- sourceDocument: Yokohama IT Operations Management sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/yokohama/it-operations-management Release : - yokohama ft:locale : - en-US ft:publication_title : - Yokohama IT Operations Management ft:clusterId : - itom bundleId : - itom workflow : - Technology --- # Load balancers # Load balancer discovery {#ariaid-title1} * Release version: Yokohama * * Updated January 30, 2025 * * ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read Discovery can collect data about network routers, switches, and applications. Discovery supports data collection from the following applications and hardware: * A10 * Apache mod_jk and Apache mod_proxy * Big-IP F5 Traffic Manager * Cisco * Citrix NetScaler * HAProxy * NGINX * Alteon * ACE * Radware {#c_LoadBalancers__ul_psw_2dy_5p} Important: Discovery treats load balancers as licensable entities and attempts to discover them primarily using SNMP. If a load balancer in your system, running on a Linux host, has SNMP and SSH ports open, Discovery might classify it based on the SSH port. This classification has priority over SNMP. To ensure that Discovery properly classifies your hardware load balancers, create a Discovery behavior for load balancers that includes SNMP but not SSH. Software load balancers are treated as applications. ## Load balancer patterns Starting with the Jakarta release, Discovery uses out-of-box patterns to find some types load balancers for new instances (see table). Note: For information on Probe to Pattern migration see the knowledge article [KB0694477](https://support.servicenow.com/kb_view.do?sysparm_article=KB0694477). {#c_LoadBalancers__table_gbc_kdq_fx__entry__3} | Load balancer | Pattern names and description | Main CI table populated | |-|-|-| | [A10](https://servicenow-prod.fluidtopics.net/W0__RVk0tFjo2tMou6hczQ "Discovery and Service Mapping uses patterns to collect information about A10 load balancers.") | A10 LoadBalancer | A10 Load Balancer \[cmdb_ci_lb_a10\] | | [ACE](https://servicenow-prod.fluidtopics.net/_qsUxKOPk9Fc2hnWcXRYJQ "Discovery identifies and classifies information about ACE load balancers.") | ACE Load Balancer by SSH (formerly ACE Load Balancer) | ACE \[cmdb_ci_lb_ace\] | | [Alteon](https://servicenow-prod.fluidtopics.net/j0PORPQ812sGQnCDUNTqmA "Discovery identifies and classifies information about Alteon load balancers.") | Alteon Load Balancer | Alteon \[cmdb_ci_lb_alteon\] | | [F5 BIG-IP](https://servicenow-prod.fluidtopics.net/CdSmjjxJaPKXByxudAfv0w "Discovery and Service Mapping can find F5 BIG-IP load balancers via SNMP, SSH, and through the REST API.") | F5 - HD, F5 Load Balancer | F5 BIG-IPs \[cmdb_ci_lb_bigip\] | | [NetScaler](https://servicenow-prod.fluidtopics.net/3X0oG6dBd3~CF5UwTVypRQ "Discovery and Service Mapping find Citrix NetScaler load balancers including Server Load Balancing (GSLB).") | Netscaler Load Balancer | Citrix NetScalers \[cmdb_ci_lb_netscaler\] | | [Radware - AppDirector](https://servicenow-prod.fluidtopics.net/_c4Rdo3zUqtszlewVohAqw "Discovery of Radware load balancers is performed by SNMP.") | AppDirector Load Balancer | Radware Load Balancer \[cmdb_ci_lb_radware\] | | [HAProxy load balancer discovery with patterns](https://servicenow-prod.fluidtopics.net/lMVtbJczXwxZXj6E6PUFWQ "The Discovery and Service Mapping Patterns application uses the HA Proxy pattern to find HAProxy Community load balancers running on a Linux server. Discovering some of these resources may require updating to the latest version of the Discovery and Service Mapping Patterns application from the ServiceNow Store.") | HA Proxy | HAProxy Load Balancer \[cmdb_ci_lb_haproxy\] | [ ] {#c_LoadBalancers__table_gbc_kdq_fx} To use patterns, verify that the correct pattern is specified in the horizontal pattern probe on the classifier. See [Add the Horizontal Pattern probe to a classifier](https://servicenow-prod.fluidtopics.net/F1AaGd2A7GKs7d9ZAQQp5w#t_AddHorizontalPatternProbe "To use a pattern for the identification and exploration phases of horizontal discovery, you must add the Horizontal Pattern probe to the classifiers for the CIs are you trying to discover.") for instructions. ## Load balancer discovery, Service Mapping, and customized CI fields {#c_LoadBalancers__section_kqw_4jk_mcb} Discovery collects information about the install status and operational status of load balancers. If you are using Discovery with Service Mapping, do not customize the \[operational_status\] or \[install_status\] fields. By default, Service Mapping ignores all host CIs for which the value of the \[operational_status\] field is not 1 (Operational) or the value of the status \[install_status\] field is 100 (absent). For additional information, see [Preparing customized ServiceNow deployments to work with Service Mapping](https://support.servicenow.com/nav_to.do?uri=/kb_knowledge.do?sys_id=334cd265db4a4fc0d7e37aa31f9619f7&sysparm_referring_url=kb_view.do) \[KB0647574\] in the HI Knowledge Base. * **[A10 load balancer discovery](https://servicenow-prod.fluidtopics.net/W0__RVk0tFjo2tMou6hczQ)** Discovery and Service Mapping uses patterns to collect information about A10 load balancers. * **[Cisco ACE load balancer discovery](https://servicenow-prod.fluidtopics.net/_qsUxKOPk9Fc2hnWcXRYJQ)** Discovery identifies and classifies information about ACE load balancers. * **[Cisco GSS load balancer discovery](https://servicenow-prod.fluidtopics.net/bzvaMuhOOWPF5Xcz_SiVcA)** Discovery of Cisco GSS load balancers is performed by both SNMP and SSH. * **[Cisco CSS load balancer](https://servicenow-prod.fluidtopics.net/m9061Mwy8wYkMXkUr2xn~Q)** Discovery of Cisco CSS load balancers is performed by SNMP. * **[Citrix NetScaler load balancer discovery](https://servicenow-prod.fluidtopics.net/3X0oG6dBd3~CF5UwTVypRQ)** Discovery and Service Mapping find Citrix NetScaler load balancers including Server Load Balancing (GSLB). * **[F5 BIG-IP load balancer discovery](https://servicenow-prod.fluidtopics.net/CdSmjjxJaPKXByxudAfv0w)** Discovery and Service Mapping can find F5 BIG-IP load balancers via SNMP, SSH, and through the REST API. * **[HAProxy load balancer discovery using probes](https://servicenow-prod.fluidtopics.net/E19OT6JoCHppUEyc7v54FQ)** Discovery of HAProxy Community edition load balancers is performed by SSH. * **[NGINX load balancer discovery](https://servicenow-prod.fluidtopics.net/Aid_girnkw89vANYQbIfKA)** Discovery of NGINX load balancers is performed by SSH. * **[Radware Alteon load balancer discovery](https://servicenow-prod.fluidtopics.net/j0PORPQ812sGQnCDUNTqmA)** Discovery identifies and classifies information about Alteon load balancers. * **[Radware-appDirector load balancer discovery](https://servicenow-prod.fluidtopics.net/_c4Rdo3zUqtszlewVohAqw)** Discovery of Radware load balancers is performed by SNMP. * **[Load balancer fields and probes](https://servicenow-prod.fluidtopics.net/lETN~cZAVEnxRcNKWW0cFQ)** Discovery stores load balancer information in several tables.