HPN-ICF-LB-MIB

All MIBs › HPN-ICF-LB-MIB

Last Updated: 2010-12-01

Category: Vendor: H3C/HH3C, Vendor: HP/HPE

Description: Manages server load balancing (LB) virtual servers, real servers, and health-check policies on HP/Comware devices.

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What Is HPN-ICF-LB-MIB?

HPN-ICF-LB-MIB is an HPE/H3C Comware ICF private MIB for managing server load balancing (LB) on the device, covering real-server groups and their health status. It exposes real-server group tables (hpnicfLBRealServerGroupTable/Entry with hpnicfLBRealServerGroupName) and a real-server table (hpnicfLBRealServerTable/Entry) holding hpnicfLBRealServerName, hpnicfLBRealServerStatus, and hpnicfLBRealServerConnectNumber, plus trap objects (hpnicfLBTrap, TrapPrex) for LB-related events. Its monitoring emphasis is on backend server software/service health: hpnicfLBRealServerStatus reveals whether a real server is currently considered up or down by health checks, and ConnectNumber shows active connection load per server, both key to spotting an overloaded or failed backend. This lets an operator catch server pool imbalance or a silently failed backend before it causes application outages. It is a vendor extension for application delivery deployed on HPE/H3C Comware devices performing Layer 4-7 load balancing in front of application server farms, where HPN-ICF-LB-MIB SNMP monitoring helps administrators track real-server health and connection load.

IPNetwork Monitor allows you to monitor SNMP objects defined in HPN-ICF-LB-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

HPE/H3C Comware load-balancing appliances/switches

Monitoring Examples

An admin walks hpnicfLBRealServerTable to check hpnicfLBRealServerStatus for every server in an hpnicfLBRealServerGroupTable group, confirming each backend is marked up, and monitors hpnicfLBRealServerConnectNumber to see if connections are distributed evenly across the group. If one server's status flips to down while ConnectNumber on the remaining servers spikes, that indicates a backend failure that shifted load onto the survivors, which would also be surfaced via an hpnicfLBTrap notification.

What Can Be Monitored

real server up/down status
real server active connection count
real server group membership
load-balancing trap/alert events

Imported Objects

From HPN-ICF-OID-MIB

hpnicfCommon

OBJECT-IDENTITY

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using hpnicfLBRealServerStatus OID:

Select an HPE/H3C Comware load-balancing appliance/switch (server load balancing) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type hpnicfLBRealServerStatus into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The real server's status — enabled (receiving new sessions), disabled (no traffic assigned), or slowdown (finishing existing sessions but not receiving new ones). On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value is 'disabled' or 'slowdown', since that means this real server is no longer receiving full traffic from the load balancer. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
hpnicfLB	1.3.6.1.4.1.11.2.14.11.15.2.116			The private mib file includes the loadbalance information of the device.
hpnicfLBTables	1.3.6.1.4.1.11.2.14.11.15.2.116.1
hpnicfLBRealServerGroupTable	1.3.6.1.4.1.11.2.14.11.15.2.116.1.1		not-accessible	Real server group table for loadbalance.
hpnicfLBRealServerGroupEntry	1.3.6.1.4.1.11.2.14.11.15.2.116.1.1.1		not-accessible	An entry contains the information of the real server group.
STR hpnicfLBRealServerGroupName	1.3.6.1.4.1.11.2.14.11.15.2.116.1.1.1.1	DisplayString	accessible-for-notify	Real server group name.
hpnicfLBRealServerTable	1.3.6.1.4.1.11.2.14.11.15.2.116.1.2		not-accessible	Real server table for loadbalance.
hpnicfLBRealServerEntry	1.3.6.1.4.1.11.2.14.11.15.2.116.1.2.1		not-accessible	An entry contains the information of the real server.
STR hpnicfLBRealServerName	1.3.6.1.4.1.11.2.14.11.15.2.116.1.2.1.1	DisplayString	accessible-for-notify	Real server name.
INT hpnicfLBRealServerStatusEx	1.3.6.1.4.1.11.2.14.11.15.2.116.1.2.1.2	INTEGER	read-write	A list of real server status type. enabled: the real server is enabled. disabled: the real server is disabled, the loadbalance device does not assign any traffic to the real server. slowdown: the real server continues to process the existed session previously assigned to it, but the loadbalance device does not assign any new session to the real server.
I32 hpnicfLBRealServerConnectNumber	1.3.6.1.4.1.11.2.14.11.15.2.116.1.2.1.3	Integer32	read-only	The connection number of real server.
hpnicfLBTrap	1.3.6.1.4.1.11.2.14.11.15.2.116.2
hpnicfLBTrapPrex	1.3.6.1.4.1.11.2.14.11.15.2.116.2.0
NTF hpnicfLBRealServerOverLoad	1.3.6.1.4.1.11.2.14.11.15.2.116.2.0.1			This trap is sent when the real server is overloaded.

RFC description

Load balancing MIB for real server group management and connection monitoring.

Start monitoring HPE/H3C Comware load-balancing appliance/switch (server load balancing) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download HPN-ICF-LB-MIB