A3COM-HUAWEI-STORM-CONSTRAIN-MIB

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Organization: Huawei 3Com Technologies Co., Ltd.

Last Updated: 2008-06-06

Category: Vendor: H3C/HH3C

Description: Manages storm control (broadcast, multicast, and unknown unicast suppression) on H3C/3Com switch ports with configurable rate thresholds and notification traps.

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What Is A3COM-HUAWEI-STORM-CONSTRAIN-MIB?

A3COM-HUAWEI-STORM-CONSTRAIN-MIB is a vendor-specific MIB from Huawei-3Com (H3C) that manages storm control on switch ports, suppressing excessive broadcast, multicast, and unknown-unicast traffic before it can flood the network. It exposes per-port configuration through the h3cStormCtrlTable (indexed by ifIndex), including h3cStormCtrlBroadcastUpper/Lower, h3cStormCtrlMulticastUpper/Lower, and h3cStormCtrlUnicastUpper/Lower thresholds along with their H3cStormConstrainUnit (packets/sec, ratio, bytes/sec, kbits/sec), plus h3cStormCtrlPortStatus reporting whether a port is currently controlled or normal and h3cStormCtrlPortMode defining the enforcement action (none, block, shutdown). It depends on ifIndex from RFC1213-MIB and RowStatus from SNMPv2-TC for row lifecycle management, and it fires h3cStormRising and h3cStormFalling notifications when a monitored flux crosses its configured threshold. It is deployed on H3C/3Com/Huawei enterprise LAN switches to protect uplinks and access ports from broadcast storms, and administrators can download the A3COM-HUAWEI-STORM-CONSTRAIN-MIB file to load it into their MIB browser when auditing storm-control policy across a switch fleet.

IPNetwork Monitor allows you to monitor SNMP objects defined in A3COM-HUAWEI-STORM-CONSTRAIN-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 (Huawei-3Com) enterprise LAN switches

Monitoring Examples

An operator polls h3cStormCtrlTable to check h3cStormCtrlPortStatus for a trunk port and compares h3cStormCtrlBroadcastUpper against observed traffic; an h3cStormRising trap combined with h3cStormCtrlPortStatus showing controlled(1) would indicate the port has entered storm-control shutdown or blocking and is dropping excess broadcast/multicast/unicast traffic.

What Can Be Monitored

per-port storm-control status
broadcast/multicast/unicast threshold configuration
storm-control enforcement mode (block/shutdown)
storm rising/falling trap notifications
row status of storm-control entries

Imported Objects

From A3COM-HUAWEI-OID-MIB

h3cCommon

OBJECT-IDENTITY

From RFC1213-MIB

ifIndex

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus
TEXTUAL-CONVENTION

OIDs

OID symbolic	OID numeric	Type	Access	Description
h3cStormConstrain	1.3.6.1.4.1.43.45.1.10.2.66			The Storm-Constrain function is used to avoid the packet-storm on a port. Three types of flux can be set observed respectively: broadcast, multicast and unicast. If an observed flux exceeds its upper limit, this kind of flux will be recognized as over-upper-flux. This kind of flux will be considered as normal-flux until it falls below its lower limit. If any type of observed flux is over-upper-flux, the port will change its status to controlled-status, that is to stop packet forwarding to avoid storm. Only when all the observed fluxes are not over-upper-flux, will the port return to normal(forwarding) status.
h3cStormScalarGroup	1.3.6.1.4.1.43.45.1.10.2.66.1
INT h3cStormTrapType	1.3.6.1.4.1.43.45.1.10.2.66.1.1	INTEGER	accessible-for-notify	This value is used to identify the type of trap. broadcast: trap message is generated for broadcast flux exceeds upper limit or falls under lower limit on a port. multicast: trap message is generated for multicast flux exceeds upper limit or falls under lower limit on a port. unicast : trap message is generated for unicast flux exceeds upper limit or falls under lower limit on a port.
I32 h3cStormTrapThreshold	1.3.6.1.4.1.43.45.1.10.2.66.1.2	Integer32	accessible-for-notify	This value is used to figure the threshold of flux in trap message. For example, when the trap is generated for broadcast flux exceeds upper limit on a port, this value is equal to upper limit value configured. And when the trap is generated for broadcast flux fell under lower limit, this value is equal to lower limit value configured.
h3cStormTableGroup	1.3.6.1.4.1.43.45.1.10.2.66.2
h3cStormCtrlTable	1.3.6.1.4.1.43.45.1.10.2.66.2.1		not-accessible	A table containing configurations of storm-constrain.
h3cStormCtrlEntry	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1		not-accessible	Detailed information of storm-constrain configurations.
INT h3cStormCtrlPortStatus	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.1	INTEGER	read-only	Status of the port: controlled: indicate that the port is in controlled status. Port which is in this status will not forward some type of packet. normal : indicate that the port is in normal status.
H3C h3cStormCtrlBroadcastUnit	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.2	H3cStormConstrainUnit	read-create	The unit of the broadcast flux. This value must be set together with h3cStormCtrlBroadcastUpper and h3cStormCtrlBroadcastLower.
I32 h3cStormCtrlBroadcastUpper	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.3	Integer32	read-create	The upper-limit of incoming broadcast taffic at a port within 1 second interval. Its unit depends on h3cStormCtrlBroadcastUnit value.
I32 h3cStormCtrlBroadcastLower	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.4	Integer32	read-create	The lower-limit of incoming broadcast taffic at a port within 1 second interval. This value must be lower than h3cStormCtrlBroadcastUpper value. Its unit depends on h3cStormCtrlBroadcastUnit value.
H3C h3cStormCtrlMulticastUnit	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.5	H3cStormConstrainUnit	read-create	The unit of the multicast flux. This value must be set together with h3cStormCtrlMulticastUpper and h3cStormCtrlMulticastLower.
I32 h3cStormCtrlMulticastUpper	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.6	Integer32	read-create	The upper-limit of incoming multicast taffic at a port within 1 second interval. Its unit depends on h3cStormCtrlMulticastUnit value.
I32 h3cStormCtrlMulticastLower	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.7	Integer32	read-create	The lower-limit of incoming multicast taffic at a port within 1 second interval. This value must be lower than h3cStormCtrlMulticastUpper value. Its unit depends on h3cStormCtrlMulticastUnit value.
H3C h3cStormCtrlUnicastUnit	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.8	H3cStormConstrainUnit	read-create	The unit of the unicast flux. This value must be set together with h3cStormCtrlUnicastUpper and h3cStormCtrlUnicastLower.
I32 h3cStormCtrlUnicastUpper	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.9	Integer32	read-create	The upper-limit of incoming unicast taffic at a port within 1 second interval. Its unit depends on h3cStormCtrlUnicastUnit value.
I32 h3cStormCtrlUnicastLower	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.10	Integer32	read-create	The lower-limit of incoming unicast taffic at a port within 1 second interval. This value must be lower than h3cStormCtrlUnicastUpper value. Its unit depends on h3cStormCtrlUnicastUnit value.
ROW h3cStormCtrlRowStatus	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.11	RowStatus	read-create	This object is responsible for managing the creation, deletion and modification of rows, which supports active status and CreatAndGo, destroy operation.
INT h3cStormCtrlPortMode	1.3.6.1.4.1.43.45.1.10.2.66.2.1.1.12	INTEGER	read-create	The storm control mode of the port.
h3cStormNotifications	1.3.6.1.4.1.43.45.1.10.2.66.3
NTF h3cStormRising	1.3.6.1.4.1.43.45.1.10.2.66.3.1			This trap message is generated when any type of the flux exceeds its upper limit on a port.
NTF h3cStormFalling	1.3.6.1.4.1.43.45.1.10.2.66.3.2			This trap message is generated when a flux which used to overflow its upper limit, falls below its lower limit on a port.

RFC description

Storm control MIB for managing broadcast, multicast, and unicast packet storms on ports.

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Download A3COM-HUAWEI-STORM-CONSTRAIN-MIB

What Is A3COM-HUAWEI-STORM-CONSTRAIN-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description