CISCO-WAN-ATM-CONN-STAT-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsCISCO-WAN-ATM-CONN-STAT-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2005-08-25

Category: ATM, Vendor: Cisco Devices

Description: Tracks Cisco WAN ATM connection statistics, including cell counts and error rates, on MGX/BPX platforms.

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What Is CISCO-WAN-ATM-CONN-STAT-MIB?

CISCO-WAN-ATM-CONN-STAT-MIB provides real-time ATM connection statistical counters for Cisco WAN switching platforms such as the MGX/BPX product families. It exposes per-connection ingress cell counts by CLP (cell loss priority) class, along with discard and tagging counters resulting from CoS (class of service) and UPC (usage parameter control) policing. Its core use is performance/fault monitoring of ATM virtual circuits: rising cwacsIngCLP0UpcDiscard or cwacsIngCLP0CoSDiscard values indicate a connection is exceeding its contracted traffic parameters and cells are being policed/dropped, which directly impacts application performance over that circuit. It is a Cisco-specific counterpart to standard ATM MIB (RFC 2515-family) connection statistics, scoped to Cisco's WAN switch hardware rather than general ATM interfaces. It is used in legacy Cisco MGX/BPX ATM WAN core networks to track cell-level health of individual switched connections. Engineers can download the CISCO-WAN-ATM-CONN-STAT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-WAN-ATM-CONN-STAT-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 MGX/BPX WAN ATM switches

Monitoring Examples

An operator polling cwacsTable by cwacsEntry index would compare cwacsIngRcvCLP0 against cwacsIngCLP0UpcDiscard to determine what fraction of received low-priority cells are being discarded due to non-conformance with the connection's traffic contract. A sudden rise in cwacsIngCLP0UpcTagged alongside steady cwacsIngXmtCLP0 would indicate a customer connection is bursting above its committed rate and getting cells tagged for discard eligibility.

What Can Be Monitored

  • ingress/egress cell counts by CLP class
  • UPC policing discards
  • CoS discards
  • cell tagging counts
  • per-connection ATM cell statistics
Imported Objects

From CISCO-WAN-ATM-CONN-MIB

cwaChanVciOBJECT-TYPE
cwaChanVpiOBJECT-TYPE

From CISCOWAN-SMI

ciscoWanOBJECT-IDENTITY

From IF-MIB

ifIndexOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Gauge32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TruthValue

How to Use in IPNetwork Monitor

Example using cwacsIngRcvCLP0 OID:

Select a Cisco MGX/BPX ATM switch 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 cwacsIngRcvCLP0 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 number of valid CLP=0 ATM cells in the ingress direction of this Channel prior to the traffic management entity. 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 (in cells), 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

RFC description

Monitors Cisco WAN ATM connection statistics including cell counts and error rates on MGX/BPX platforms.

Start monitoring Cisco MGX/BPX ATM switches 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-WAN-ATM-CONN-STAT-MIB