PROXY-MIB

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Organization: National Laboratory for Applied Network Research

Last Updated: 1998-09-01

Category: Proxy and Caching

Description: Manages NLARN Internet proxy server configuration, cache performance counters, and connection statistics.

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What Is PROXY-MIB?

PROXY-MIB is a vendor-neutral MIB, originally defined by the NLANR/IRCache project (referenced at ircache.net) for generic management of Internet proxy/cache servers such as Squid-based caching proxies. It covers proxy server configuration together with cache performance counters and connection statistics. Its monitoring value is chiefly software-level service health: cache hit/miss rates, active connection counts, and throughput are used to judge whether the caching proxy process is running efficiently or is overloaded/misconfigured. No strong dependency on other MIBs is evident beyond standard SNMPv2 conventions given the minimal object data available in this batch. It is typically deployed on dedicated Internet proxy/cache servers in ISP or enterprise networks to offload and accelerate web traffic. Engineers can download the PROXY-MIB file directly to load it into their MIB browser.

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

Internet proxy/cache servers (e.g. Squid-based caching proxies)

Monitoring Examples

Only a single top-level object fragment (nsfnet) is available for this MIB in the data given, so a fully concrete table-level monitoring scenario cannot be honestly constructed; based on the short description, an admin would typically poll cache hit/miss counters and active connection statistics to detect a proxy cache under memory or CPU pressure, but the specific object/table names for these are not present in this batch.

What Can Be Monitored

cache hit/miss rate
active proxy connections
proxy throughput/traffic statistics
proxy server configuration state

Imported Objects

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32
experimental

From SNMPv2-TC

DisplayString

How to Use in IPNetwork Monitor

Example using proxyNumObjects OID:

Select an Internet proxy/cache servers, e.g. Squid-based caching proxie 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 proxyNumObjects into the Find box to locate it in the OID tree, then select it and click OK. The number of objects currently held by the proxy. 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
nsfnet	1.3.6.1.3.25
proxy	1.3.6.1.3.25.17			Proxy MIB defined for the generic management of proxy devices. See http://www.ircache.net/Cache/cache-snmp/.
proxySystem	1.3.6.1.3.25.17.1
U32 proxyMemUsage	1.3.6.1.3.25.17.1.1	Unsigned32	read-only	The memory in use by the proxy independant of the support processes on the system running the proxy
U32 proxyStorage	1.3.6.1.3.25.17.1.2	Unsigned32	read-only	The quantity of storage in use by the proxy in KB. This value can be zero if there is no caching occuring.
U32 proxyCpuUsage	1.3.6.1.3.25.17.1.3	Unsigned32	read-only	The amount of CPU consumed over the life of the process in seconds.
TIK proxyUpTime	1.3.6.1.3.25.17.1.4	TimeTicks	read-only	The amount of time the proxy has been running, in TimeTicks.
proxyConfig	1.3.6.1.3.25.17.2
STR proxyAdmin	1.3.6.1.3.25.17.2.1	DisplayString	read-only	The contact responsible for the administration of the proxy. Usually a name and email address.
STR proxySoftware	1.3.6.1.3.25.17.2.2	DisplayString	read-only	Name of the proxy sofware.
STR proxyVersion	1.3.6.1.3.25.17.2.3	DisplayString	read-only	Version of the proxy software.
proxyPerf	1.3.6.1.3.25.17.3
proxySysPerf	1.3.6.1.3.25.17.3.1
G32 proxyCpuLoad	1.3.6.1.3.25.17.3.1.1	Gauge32	read-only	The current percentage of the CPU being consumed by the proxy proccess at this time.
C32 proxyNumObjectsEx	1.3.6.1.3.25.17.3.1.2	Counter32	read-only	The number of objects currently held by the proxy.
proxyProtoPerf	1.3.6.1.3.25.17.3.2
proxyProtoClient	1.3.6.1.3.25.17.3.2.1
C32 proxyClientHttpRequests	1.3.6.1.3.25.17.3.2.1.1	Counter32	read-only	The number of HTTP requests recieved from clients.
C32 proxyClientHttpHits	1.3.6.1.3.25.17.3.2.1.2	Counter32	read-only	The number of HTTP hits that the proxy clients have produced.
C32 proxyClientHttpErrors	1.3.6.1.3.25.17.3.2.1.3	Counter32	read-only	The number of HTTP errors caused by client connections.
C32 proxyClientHttpInKbs	1.3.6.1.3.25.17.3.2.1.4	Counter32	read-only	The number of kilobits recieved from the clients by the proxy.
C32 proxyClientHttpOutKbs	1.3.6.1.3.25.17.3.2.1.5	Counter32	read-only	The number of kilobits delivered to clients from the proxy.
proxyProtoServer	1.3.6.1.3.25.17.3.2.2
C32 proxyServerHttpRequests	1.3.6.1.3.25.17.3.2.2.1	Counter32	read-only	The number of HTTP requests that the proxy has issued.
C32 proxyServerHttpErrors	1.3.6.1.3.25.17.3.2.2.2	Counter32	read-only	The number of HTTP errors while fetching objects.
C32 proxyServerHttpInKbs	1.3.6.1.3.25.17.3.2.2.3	Counter32	read-only	The number of Kbs recieved by the proxy from remote servers.
C32 proxyServerHttpOutKbs	1.3.6.1.3.25.17.3.2.2.4	Counter32	read-only	The number of kbs transmitted by the proxy to remote servers.
proxyMedianSvcTable	1.3.6.1.3.25.17.3.3		not-accessible	The table of median statistics serviced by the proxy indexed by the median time.
proxyMedianSvcEntry	1.3.6.1.3.25.17.3.3.1		not-accessible	An entry in the proxyMedianSvcTable.
I32 proxyMedianTime	1.3.6.1.3.25.17.3.3.1.1	Integer32	read-only	The median time used to index the table proxyMedianSvcTable.
I32 proxyHTTPAllSvcTime	1.3.6.1.3.25.17.3.3.1.2	Integer32	read-only	The service time for all HTTP requests.
I32 proxyHTTPMissSvcTime	1.3.6.1.3.25.17.3.3.1.3	Integer32	read-only	The service time for all HTTP misses.
I32 proxyHTTPHitSvcTime	1.3.6.1.3.25.17.3.3.1.4	Integer32	read-only	The service time for all HTTP hits.
I32 proxyHTTPNhSvcTime	1.3.6.1.3.25.17.3.3.1.5	Integer32	read-only	The service time for all HTTP near hits.
I32 proxyDnsSvcTime	1.3.6.1.3.25.17.3.3.1.6	Integer32	read-only	The DNS service time.

RFC description

Generic proxy device management including memory, storage, and CPU usage monitoring for caching proxies.

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