HH3C-LB-MIB

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Organization: Hangzhou H3C Technologies Co., Ltd.

Last Updated: 2010-12-01

Category: Domain: Subscriber Management, Vendor: H3C/HH3C

Description: Manages server load balancing virtual servers, real server pools, and health check policies on H3C LB devices.

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What Is HH3C-LB-MIB?

HH3C-LB-MIB manages server load-balancing configuration on H3C devices acting as load balancers, covering virtual servers, real-server pools/groups, and health-check-driven server status. It exposes real-server-group and real-server tables holding server names, operational status, and active connection counts. Its monitoring value centers on the software/service status of backend servers: whether a real server is marked up or down by health checks and how many connections it currently holds, directly revealing backend service availability and load-distribution issues. It is a vendor-specific feature MIB that typically works alongside standard TCP/IP and interface MIBs for the underlying network path rather than any single IETF LB standard. It is deployed on H3C load-balancing appliances or LB-capable switches/routers front-ending server farms in data centers. Engineers can download the HH3C-LB-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in HH3C-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

H3C load-balancing appliances/switches

Monitoring Examples

hh3cLBRealServerTable/hh3cLBRealServerEntry expose hh3cLBRealServerName, hh3cLBRealServerStatus, and hh3cLBRealServerConnectNumber for each server in an hh3cLBRealServerGroupTable pool, letting an admin see when a real server's status flips to down (failed health check) and its connection count drops to zero — signaling an outage traffic is being steered away from. hh3cLBTrap/hh3cLBTrapPrex define the traps sent on such real-server status changes.

What Can Be Monitored

real server status (up/down)
real server active connection count
real server group membership
real server status-change traps

Imported Objects

From HH3C-OID-MIB

hh3cCommon

OBJECT-IDENTITY

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using hh3cLBRealServerStatus OID:

Select an H3C 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 hh3cLBRealServerStatus 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. It reports 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. 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 anything other than 'enabled', since that indicates the condition this object reports has changed to one worth investigating. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
hh3cLB	1.3.6.1.4.1.25506.2.116			The private mib file includes the loadbalance information of the device.
hh3cLBTables	1.3.6.1.4.1.25506.2.116.1
hh3cLBRealServerGroupTable	1.3.6.1.4.1.25506.2.116.1.1		not-accessible	Real server group table for loadbalance.
hh3cLBRealServerGroupEntry	1.3.6.1.4.1.25506.2.116.1.1.1		not-accessible	An entry contains the information of the real server group.
STR hh3cLBRealServerGroupName	1.3.6.1.4.1.25506.2.116.1.1.1.1	DisplayString	accessible-for-notify	Real server group name.
hh3cLBRealServerTable	1.3.6.1.4.1.25506.2.116.1.2		not-accessible	Real server table for loadbalance.
hh3cLBRealServerEntry	1.3.6.1.4.1.25506.2.116.1.2.1		not-accessible	An entry contains the information of the real server.
STR hh3cLBRealServerName	1.3.6.1.4.1.25506.2.116.1.2.1.1	DisplayString	accessible-for-notify	Real server name.
INT hh3cLBRealServerStatusEx	1.3.6.1.4.1.25506.2.116.1.2.1.2	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 hh3cLBRealServerConnectNumber	1.3.6.1.4.1.25506.2.116.1.2.1.3	Integer32	read-only	The connection number of real server.
hh3cLBTrap	1.3.6.1.4.1.25506.2.116.2
hh3cLBTrapPrex	1.3.6.1.4.1.25506.2.116.2.0
NTF hh3cLBRealServerOverLoad	1.3.6.1.4.1.25506.2.116.2.0.1			This trap is sent when the real server is overloaded.

RFC description

Load balance management for real server groups, status monitoring, and traffic distribution in H3C devices.

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Download HH3C-LB-MIB