A3COM-HUAWEI-AAL5-MIB

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Organization: Hangzhou H3C Technologies Co., Ltd.

Last Updated: 2004-11-04

Category: ATM, Vendor: H3C/HH3C

Description: Monitors ATM Adaptation Layer 5 (AAL5) virtual circuit statistics and error counters on H3C devices.

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What Is A3COM-HUAWEI-AAL5-MIB?

A3COM-HUAWEI-AAL5-MIB is an H3C (formerly 3Com/Huawei) proprietary module supplementing standard ATM management by exposing ATM Adaptation Layer 5 (AAL5) virtual-circuit information that the module_desc explicitly notes is excluded from RFC 1695, the standard AToM MIB. It exposes per-VCC traffic counters and connection state for ATM virtual circuits configured on the device. This is a monitoring MIB in the classic sense of tracking software/protocol status: per-VCC packet and octet counters reveal throughput trends, while h3cAal5VccState directly reports whether a given virtual circuit is up, down, or in another operational state, letting operators catch failed circuits quickly. Dependency: it explicitly complements the IETF RFC 1695 ATM MIB rather than replacing it. Typical deployment is on H3C/3Com ATM-capable WAN edge routers or switches carrying legacy ATM PVC traffic. Engineers can download the A3COM-HUAWEI-AAL5-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in A3COM-HUAWEI-AAL5-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/3Com ATM-capable routers and switches

Monitoring Examples

Polling h3cAal5VccTable (indexed by h3cAal5VccVpi and h3cAal5VccVci) lets an admin track h3cAal5VccInPkts/h3cAal5VccOutPkts and h3cAal5VccInOctets/h3cAal5VccOutOctets to baseline throughput on a given AAL5 virtual circuit. A sudden change in h3cAal5VccState from active to a down or inactive state would flag a failed VC that RFC 1695 alone might not surface with H3C-specific fidelity, prompting investigation into the underlying ATM PVC.

What Can Be Monitored

AAL5 VCC inbound/outbound packet counts
AAL5 VCC inbound/outbound octet counts
VCC operational state
VPI/VCI circuit identification

Imported Objects

From A3COM-HUAWEI-OID-MIB

h3cAAL5

OBJECT-IDENTITY

From RFC1213-MIB

ifIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using h3cAal5VccInPkts OID:

Select an H3C/3Com ATM-capable router 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 h3cAal5VccInPkts 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 AAL5 CPCS PDUs received. 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
h3cAAL5MIB	1.3.6.1.4.1.43.45.1.10.2.21.1			This MIB file provides AAL5 specific information that are excluded by RFC 1695
h3cAal5MIBTraps	1.3.6.1.4.1.43.45.1.10.2.21.1.0
NTF h3cAal5VccStateChange	1.3.6.1.4.1.43.45.1.10.2.21.1.0.1			The status of AAL5 VCC.
h3cAal5MIBObjects	1.3.6.1.4.1.43.45.1.10.2.21.1.1
h3cAal5VccTable	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1		not-accessible	This table extends AAL5 VCC performance parameters which definded in aal5VccEntry of RFC1695.
h3cAal5VccEntry	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1.1		not-accessible	This list contains the additional AAL5 VCC performance parameters which are not definded in aal5VccEntry of RFC1695.
I32 h3cAal5VccVpi	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1.1.1	Integer32	not-accessible	The VPI value of the AAL5 VCC.
I32 h3cAal5VccVci	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1.1.2	Integer32	not-accessible	The VCI value of the AAL5 VCC.
C32 h3cAal5VccInPktsEx	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1.1.3	Counter32	read-only	The number of AAL5 CPCS PDUs received.
C32 h3cAal5VccOutPkts	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1.1.4	Counter32	read-only	The number of AAL5 CPCS PDUs transmitted.
C32 h3cAal5VccInOctets	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1.1.5	Counter32	read-only	The number of AAL5 CPCS PDU octets received.
C32 h3cAal5VccOutOctets	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1.1.6	Counter32	read-only	The number of AAL5 CPCS PDU octets transmitted.
INT h3cAal5VccState	1.3.6.1.4.1.43.45.1.10.2.21.1.1.1.1.7	INTEGER	read-only	Indicates whether the particular virtual circuit is operational. 'Active' indicates the particular virtual circuit is operational. 'Inactive' indicates the circuit is temporarily disabled. 'Invalid' indicates the circuit is deleted
h3cAal5MIBConformance	1.3.6.1.4.1.43.45.1.10.2.21.1.3
h3cAal5MIBCompliances	1.3.6.1.4.1.43.45.1.10.2.21.1.3.1
h3cAal5MIBCompliance	1.3.6.1.4.1.43.45.1.10.2.21.1.3.1.1			The compliance statement.
h3cAal5MIBGroups	1.3.6.1.4.1.43.45.1.10.2.21.1.3.2
h3cAal5MIBGroup	1.3.6.1.4.1.43.45.1.10.2.21.1.3.2.1			A collection of objects.
h3cAal5NotificationGroup	1.3.6.1.4.1.43.45.1.10.2.21.1.3.2.2			Traps which may be used to enhance event driven management of the interface.

RFC description

AAL5-specific information for ATM virtual circuits on H3C devices, extending RFC 1695.

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Download A3COM-HUAWEI-AAL5-MIB