IPVS-MIB

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Organization: KEMP Technologies

Last Updated: 2011-12-01

Category: Vendor: KEMP

Description: KEMP Technologies IP Virtual Server (IPVS) MIB providing SNMP objects for load balancer virtual service and real server monitoring.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is IPVS-MIB?

IPVS-MIB is a KEMP Technologies enterprise MIB for the LoadMaster line of application delivery controllers/load balancers, exposing metrics for its IP Virtual Server (IPVS) load-balancing engine. It provides tables of virtual services, the real (backend) servers behind each virtual service, and aggregate per-real-server totals, covering configuration identity as well as traffic performance counters. Its central use is monitoring the software/traffic health of the load balancer: how many connections a real server is handling, and packet/byte throughput in each direction, which together reveal an overloaded or unresponsive backend or a real server that has silently stopped receiving traffic. It is a self-contained vendor MIB but is typically used alongside standard IF-MIB/host-resources data for the LoadMaster appliance's own interface and system health. Deployment is exclusively on KEMP LoadMaster physical or virtual load-balancer appliances in front of clustered application or web servers. Engineers can download the IPVS-MIB file directly to load it into their MIB browser.

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

KEMP LoadMaster load balancer/application delivery controller

Monitoring Examples

An administrator polls ipvsRSTable and ipvsVSTable to enumerate virtual services and their bound real servers, then checks ipvsRSTotalTable (rsTotalEntry) keyed by totRSidx/totRSDesc for aggregate connection and traffic stats. A real server whose totRSConns stays at zero while totRSInPkts/totRSOutPkts stop incrementing indicates it has been silently pulled from rotation or has failed health checks. Comparing totRSInBytes and totRSOutBytes across real servers under the same virtual service reveals load-balancing imbalance.

What Can Be Monitored

virtual service configuration
real server pool membership
per-real-server connection counts
inbound/outbound packet counts
inbound/outbound byte counts

Imported Objects

From ONE4NET-MIB

one4net

MODULE-IDENTITY

From SNMPv2-SMI

Counter32
Counter64
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Opaque
enterprises

From SNMPv2-TC

DisplayString
TEXTUAL-CONVENTION
TimeInterval
TruthValue

How to Use in IPNetwork Monitor

Example using conns OID:

Select a KEMP load balancer 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 conns into the Find box to locate it in the OID tree, then select it and click OK. It reports the total number of connections handled for all VS. 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 a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ipvs	1.3.6.1.4.1.12196.12			Load Master metrics.
ipvsVSTable	1.3.6.1.4.1.12196.12.1		not-accessible	A table containing ipvs Virtual Service (VS) specific information.
vsEntry	1.3.6.1.4.1.12196.12.1.1		not-accessible	information about a VS
INT vSidx	1.3.6.1.4.1.12196.12.1.1.1	INTEGER	read-only	Unique VS Id
OCT vSDesc	1.3.6.1.4.1.12196.12.1.1.11	OCTET STRING	read-only	VS description
C32 vSConns	1.3.6.1.4.1.12196.12.1.1.12	Counter32	read-only	the total number of connections for this VS
C32 vSInPkts	1.3.6.1.4.1.12196.12.1.1.13	Counter32	read-only	the total number of incomming pakets to this VS
C32 vSOutPkts	1.3.6.1.4.1.12196.12.1.1.14	Counter32	read-only	the total number of outgoing pakets from this VS
C64 vSInBytes	1.3.6.1.4.1.12196.12.1.1.15	Counter64	read-only	the total number of incomming bytes to this VS
C64 vSOutBytes	1.3.6.1.4.1.12196.12.1.1.16	Counter64	read-only	the number of outgoing bytes from this VS
C32 vSActivConns	1.3.6.1.4.1.12196.12.1.1.17	Counter32	read-only	the current number of connections for this VS
ipvsRSTable	1.3.6.1.4.1.12196.12.2		not-accessible	A table containing ipvs Real Server (RS) specific information.
rsEntry	1.3.6.1.4.1.12196.12.2.1		not-accessible	information about a RS
INT rSidx	1.3.6.1.4.1.12196.12.2.1.1	INTEGER	not-accessible	Unique Id of RS
INT rSVSidx	1.3.6.1.4.1.12196.12.2.1.2	INTEGER	read-only	Id of associated VS
OCT rSDesc	1.3.6.1.4.1.12196.12.2.1.11	OCTET STRING	read-only	RS description
C32 rSConns	1.3.6.1.4.1.12196.12.2.1.12	Counter32	read-only	the total number of connections for this RS
C32 rSInPkts	1.3.6.1.4.1.12196.12.2.1.13	Counter32	read-only	the total number of incoming pakets to this RS
C32 rSOutPkts	1.3.6.1.4.1.12196.12.2.1.14	Counter32	read-only	the total number of outgoing pakets from this RS
C64 rSInBytes	1.3.6.1.4.1.12196.12.2.1.15	Counter64	read-only	the total number of incoming bytes from this RS
C64 rSOutBytes	1.3.6.1.4.1.12196.12.2.1.16	Counter64	read-only	the total number of outgoing bytes from this RS
C32 rSActiveConns	1.3.6.1.4.1.12196.12.2.1.17	Counter32	read-only	the number of active connection for this RS
C32 rSInactiveConns	1.3.6.1.4.1.12196.12.2.1.18	Counter32	read-only	the number of inactive connection for this RS
C32 rSWeight	1.3.6.1.4.1.12196.12.2.1.19	Counter32	read-only	the current weight of this RS
C32 connsEx	1.3.6.1.4.1.12196.12.3	Counter32	read-only	Total number of connections handled for all VS
C32 inPkts	1.3.6.1.4.1.12196.12.4	Counter32	read-only	Total number of incoming packets for all VS
C32 outPkts	1.3.6.1.4.1.12196.12.5	Counter32	read-only	Total number of outgoing packets for all VS
C64 inBytes	1.3.6.1.4.1.12196.12.6	Counter64	read-only	Total number of incoming bytes for all VS
C64 outBytes	1.3.6.1.4.1.12196.12.7	Counter64	read-only	Total number of outgoing bytes for all VS
ipvsRSTotalTable	1.3.6.1.4.1.12196.12.8		not-accessible	A table containing Totals for Real Server (RS) specific information.
rsTotalEntry	1.3.6.1.4.1.12196.12.8.1		not-accessible	Totals for an RS
I32 totRSidx	1.3.6.1.4.1.12196.12.8.1.1	Integer32	read-only	RS Index
OCT totRSDesc	1.3.6.1.4.1.12196.12.8.1.2	OCTET STRING	not-accessible	RS description
C32 totRSConns	1.3.6.1.4.1.12196.12.8.1.3	Counter32	read-only	the total number of connections for this RS
C32 totRSInPkts	1.3.6.1.4.1.12196.12.8.1.4	Counter32	read-only	the total number of incoming pakets to this RS
C32 totRSOutPkts	1.3.6.1.4.1.12196.12.8.1.5	Counter32	read-only	the total number of outgoing pakets from this RS
C64 totRSInBytes	1.3.6.1.4.1.12196.12.8.1.6	Counter64	read-only	the total number of incoming bytes from this RS
C64 totRSOutBytes	1.3.6.1.4.1.12196.12.8.1.7	Counter64	read-only	the total number of outgoing bytes from this RS
C32 totRSActiveConns	1.3.6.1.4.1.12196.12.8.1.8	Counter32	read-only	the number of active connection for this RS
C32 totRSInactiveConns	1.3.6.1.4.1.12196.12.8.1.9	Counter32	read-only	the number of inactive connection for this RS

RFC description

MIB for IP Virtual Server (IPVS) management; monitors load balancing, virtual server pools, and connection statistics in Linux IPVS systems.

Start monitoring KEMP load balancers 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 IPVS-MIB