Load balancer discovery · SN Doc Reader

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

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.

Load balancer	Pattern names and description	Main CI table populated
A10	A10 LoadBalancer	A10 Load Balancer [cmdb_ci_lb_a10]
ACE	ACE Load Balancer by SSH (formerly ACE Load Balancer)	ACE [cmdb_ci_lb_ace]
Alteon	Alteon Load Balancer	Alteon [cmdb_ci_lb_alteon]
F5 BIG-IP	F5 - HD, F5 Load Balancer	F5 BIG-IPs [cmdb_ci_lb_bigip]
NetScaler	Netscaler Load Balancer	Citrix NetScalers [cmdb_ci_lb_netscaler]
Radware - AppDirector	AppDirector Load Balancer	Radware Load Balancer [cmdb_ci_lb_radware]
HAProxy load balancer discovery with patterns	HA Proxy	HAProxy Load Balancer [cmdb_ci_lb_haproxy]

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://raw.githubusercontent.com/ServiceNow/ServiceNowDocs/australia/markdown/australia/it-operations-management/discovery/c-UsingPatternsForHorizontalDiscovery.md) for instructions.

Load balancer discovery, Service Mapping, and customized CI fields

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 [KB0647574] in the HI Knowledge Base.

A10 load balancer discovery
Discovery and Service Mapping uses patterns to collect information about A10 load balancers.
Cisco ACE load balancer discovery
Discovery identifies and classifies information about ACE load balancers.
Cisco GSS load balancer discovery
Discovery of Cisco GSS load balancers is performed by both SNMP and SSH.
Cisco CSS load balancer
Discovery of Cisco CSS load balancers is performed by SNMP.
Citrix NetScaler load balancer discovery
Discovery and Service Mapping find Citrix NetScaler load balancers including Server Load Balancing (GSLB).
F5 BIG-IP load balancer discovery
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
Discovery of HAProxy Community edition load balancers is performed by SSH.
NGINX load balancer discovery
Discovery of NGINX load balancers is performed by SSH.
Radware Alteon load balancer discovery
Discovery identifies and classifies information about Alteon load balancers.
Radware-appDirector load balancer discovery
Discovery of Radware load balancers is performed by SNMP.
Load balancer fields and probes
Discovery stores load balancer information in several tables.

Parent Topic:Network device discovery

title	Load balancer discovery
description	Discovery can collect data about network routers, switches, and applications.
locale	en-US
canonical_url	https://www.servicenow.com/docs/r/australia/it-operations-management/itom-visibility/c\_LoadBalancers.html
release	australia
product	ITOM Visibility
classification	itom-visibility
topic_type	concept
last_updated	2026-09-10
reading_time_minutes	3
breadcrumb	Network device discoveryData collected by ITOM VisibilityITOM Visibility referenceITOM VisibilityIT Operations Management