CISCO-CONTENT-NETWORK-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2001-10-11

Category: Cisco Devices, Web and Application Servers

Description: Monitors the Cisco Content Networking infrastructure, providing management for content routing, load distribution, and CDN topology.

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What Is CISCO-CONTENT-NETWORK-MIB?

CISCO-CONTENT-NETWORK-MIB is a Cisco proprietary MIB for Cisco's Content Networking infrastructure — Content Engines, Content Routers and related devices that cache and route content closer to clients. It exposes performance and accounting counters for DNS-based request routing (request rate, client counts) and caching efficiency (bytes served, objects cached, cache hit/miss rates). Its monitoring value is centered on service/software performance status rather than physical hardware sensors — revealing whether content is being served efficiently or whether caches are thrashing. It conceptually overlaps with generic DNS and HTTP-caching concerns but is implemented as a self-contained Cisco proprietary structure with its own notifications group. The CISCO-CONTENT-NETWORK-MIB MIB was deployed on Cisco Content Engine, Content Router and Content Distribution Manager appliances used in CDN/content-caching solutions.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-CONTENT-NETWORK-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

Cisco Content Engine
Cisco Content Router
Cisco Content Distribution Manager appliances

Monitoring Examples

ccnReportDnsRequestRate and ccnReportDnsClientCount show the DNS-based request-routing load on a content router, while ccnReportAcctCacheHitRate versus ccnReportAcctCacheMissRate reveals caching efficiency. A sudden drop in hit rate alongside rising ccnReportAcctBytesServed would suggest cached content is stale or being evicted too aggressively, a condition ccnNotifications could be configured to flag.

What Can Be Monitored

DNS request rate
DNS client count
cache hit rate
cache miss rate
bytes served
objects cached

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From RMON2-MIB

ZeroBasedCounter32

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Gauge32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using ccnReportDnsRequestRate OID:

Select a Cisco Content Engine/Content Router/Content Distribution Manager (legacy) 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 ccnReportDnsRequestRate into the Find box to locate it in the OID tree, then select it and click OK. It reports the number of DNS requests per second. 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 Gauge32-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 (in requests-per-second), 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
ciscoContentNetworkMIB	1.3.6.1.4.1.9.9.216			This MIB module defines objects for Content Network devices. A Content Network is a collection of devices that optimizes the delivery of Internet content (such as HTML documents and MPEG files) by caching content near clients, by proactively pushing content into those caches, and by routing each client request to the best device available at that moment to serve the particular content requested. Content Network devices include Content Engines (CEs) for serving content, Content Routers (CRs) for routing client requests, and Content Distribution Managers (CDMs) for administering the network.
ciscoContentNetworkMIBObjects	1.3.6.1.4.1.9.9.216.1
ccnReport	1.3.6.1.4.1.9.9.216.1.1
ccnReportDns	1.3.6.1.4.1.9.9.216.1.1.1
G32 ccnReportDnsRequestRateEx	1.3.6.1.4.1.9.9.216.1.1.1.1	Gauge32	read-only	Number of DNS requests per second.
NUM ccnReportDnsClientCount	1.3.6.1.4.1.9.9.216.1.1.1.2	ZeroBasedCounter32	read-only	Total number of DNS clients that have contacted this device since the DNS server last started.
NUM ccnReportDnsRequests	1.3.6.1.4.1.9.9.216.1.1.1.3	ZeroBasedCounter32	read-only	Total number of DNS requests since the DNS server last started.
ccnReportAcct	1.3.6.1.4.1.9.9.216.1.1.2
NUM ccnReportAcctBytesServed	1.3.6.1.4.1.9.9.216.1.1.2.1	ZeroBasedCounter32	read-only	Total number of bytes of content served to clients from this device since the servers on this device last started.
G32 ccnReportAcctObjectsCached	1.3.6.1.4.1.9.9.216.1.1.2.2	Gauge32	read-only	Total number of objects in the content cache.
G32 ccnReportAcctCacheHitRate	1.3.6.1.4.1.9.9.216.1.1.2.3	Gauge32	read-only	Number of cache hits per minute.
G32 ccnReportAcctCacheMissRate	1.3.6.1.4.1.9.9.216.1.1.2.4	Gauge32	read-only	Number of cache misses per minute.
ciscoContentNetworkMIBNotif	1.3.6.1.4.1.9.9.216.2
ccnNotifications	1.3.6.1.4.1.9.9.216.2.0
NTF ccnNotifServerStart	1.3.6.1.4.1.9.9.216.2.0.1			The servers on this device are being started. This object is deprecated by ccnNotifOnline.
NTF ccnNotifServerStop	1.3.6.1.4.1.9.9.216.2.0.2			The servers on this device are being stopped. This object is deprecated by ccnNotifOnline, ccnNotifNeedsAttention and ccnNotifWaitingForCdm.
NTF ccnNotifOffline	1.3.6.1.4.1.9.9.216.2.0.3			The device is about to disconnect from the network.
NTF ccnNotifNeedsAttention	1.3.6.1.4.1.9.9.216.2.0.4			The device is on the network, but is unregistered (not associated with any CDN) or needs some other adjustment which cannot be done via the CDM administrator interface (such as repairing a disk, completing a software upgrade, or configuring the CDM database).
NTF ccnNotifWaitingForCdm	1.3.6.1.4.1.9.9.216.2.0.5			The device (CE or CR) is waiting for configuration information from the CDM. The device is on the network and is either failing to communicate with the CDM or is being told explictly by the CDM to continue waiting pending activation by the CDN administrator.
NTF ccnNotifOnline	1.3.6.1.4.1.9.9.216.2.0.6			The device is operational and ready to participate in the CDN.
ccnMIBConformance	1.3.6.1.4.1.9.9.216.3
ccnMIBCompliances	1.3.6.1.4.1.9.9.216.3.1
ccnMIBCompliance	1.3.6.1.4.1.9.9.216.3.1.1			The compliance statement for Cisco Systems entities which implement the Content Network applications. This object is deprecated by ccnMIBComplianceRev1.
ccnMIBComplianceRev1	1.3.6.1.4.1.9.9.216.3.1.2			The compliance statement for Cisco Systems entities which implement the Content Network applications.
ccnMIBGroups	1.3.6.1.4.1.9.9.216.3.2
ccnReportingGroup	1.3.6.1.4.1.9.9.216.3.2.1			DNS and Accounting with low capacity Counter32 and Gauge32 objects.
ccnNotifGroup	1.3.6.1.4.1.9.9.216.3.2.2			Notifications for the Cisco Content Network.This object is deprecated by ccnNotifGroupRev1.
ccnNotifGroupRev1	1.3.6.1.4.1.9.9.216.3.2.3			Notifications for the Cisco Content Network.

RFC description

Cisco content network management MIB for Content Engines, Routers, and Distribution Managers.

Start monitoring Cisco Content Engine/Content Router/Content Distribution Manager (legacy) 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 CISCO-CONTENT-NETWORK-MIB