CTRON-RATE-POLICING-MIB

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Organization: Enterasys Networks, Inc

Last Updated: 2003-04-10

Category: Quality of Service, Vendor: Cabletron/Enterasys

Description: Configures Cabletron traffic rate policing policies including committed information rate and burst size limits.

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What Is CTRON-RATE-POLICING-MIB?

CTRON-RATE-POLICING-MIB, also known as the Enterasys Rate Policing MIB, lets administrators set maximum ingress traffic rates on a per-port, per-priority basis on Enterasys/Cabletron switching hardware. It exposes a rate-policing configuration table (ctRatePolicingConfigTable/Entry) with per-resource threshold, priority-list, and allowed-action objects (ctRatePolicingThreshHold, ctRatePolicingThreshHoldMin, ctRatePolicingPriorityList, ctRatePolicingActionsAllowed), plus a global admin-status and config-last-change object. Its monitoring value lies in software-level traffic-policing status - whether rate limiting is enabled, what action was actually taken when a threshold was exceeded (ctRatePolicingActionsTaken), and when the policy configuration last changed - which helps confirm QoS/rate-limiting policy is enforcing as intended. It is a standalone Enterasys-specific MIB with no explicit dependency on other MIBs mentioned in its module description. It is deployed on Enterasys/Cabletron switches where administrators enforce committed-rate/burst limits on specific ports or priority queues to prevent traffic abuse or ensure QoS fairness. Engineers can download the CTRON-RATE-POLICING-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CTRON-RATE-POLICING-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

Enterasys/Cabletron network switch

Monitoring Examples

An admin would poll ctRatePolicingAdminStatus to confirm rate policing is globally enabled, then check ctRatePolicingConfigTable/Entry indexed by ctRatePolicingResourceIndex to compare ctRatePolicingThreshHold against actual traffic, using ctRatePolicingActionsTaken to see if the configured action (e.g. drop, remark) actually fired on a given port/priority. ctRatePolicingConfigLastChange would be checked to confirm no unauthorized or unexpected policy change occurred recently. ctRatePolicingPriorityList shows which traffic priorities the rule applies to on that port.

What Can Be Monitored

rate policing admin status
per-port/priority rate threshold
actions taken on rate violation
configuration last-change time

Imported Objects

From BRIDGE-MIB

dot1dBasePort

OBJECT-TYPE

From CTRON-MIB-NAMES

ctPriorityExt

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION

OIDs

OID symbolic	OID numeric	Type	Access	Description
ctRatePolicing	1.3.6.1.4.1.52.4.1.2.14.7			The Enterasys Rate Policing MIB module allows the user to set maximum ingress rates on a per port, per priority basis.
ctRatePolicingObjects	1.3.6.1.4.1.52.4.1.2.14.7.1
INT ctRatePolicingAdminStatus	1.3.6.1.4.1.52.4.1.2.14.7.1.1	INTEGER	read-write	Allows the rate policing feature to be globally enabled/disabled. A value of disable(2), functionally supersedes the ctRatePolicingRuleStatus of individual entries in the ctRatePolicingConfigTable, but does not change their actual values.
TIK ctRatePolicingConfigLastChange	1.3.6.1.4.1.52.4.1.2.14.7.1.2	TimeTicks	read-only	The value of sysUpTime the last time anything in the ctRatePolicingConfigTable changed.
ctRatePolicingConfigTable	1.3.6.1.4.1.52.4.1.2.14.7.1.3		not-accessible	This table allows configuration of rate policing rules on this device. Their are a limited number of resources available for rate policing, and this directly limits the number of rate policing rules that may be configured on each port. As a result this table does not support dynamic row creation, rather, all possible rows exist in either an active or disabled state. A manager application should not, however, infer that this configuration is necessarily fixed during the lifetime of the managed entity. The allocation of resources could theoretically be shifted. For example port 20 could have 3 resources and at some point suddenly have 4 or 2. Any such change would of course cause the value of ctRatePolicingConfigLastChange to change. At this time their is no defined mechanism to move these resources and there very likely never will be. This is merely a warning that manager applications should not count on this.
ctRatePolicingConfigEntry	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1		not-accessible	Describes a particular entry of ctRatePolicingConfigTable.
INT ctRatePolicingResourceIndex	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.1	INTEGER	not-accessible	This specifies a unique resource available for configuring a rate policing rule on this port. Each port has a limited number of resources available for rate policing. This index simply provides a mechanism for uniquely addressing each of these resources.
CTR ctRatePolicingActionsAllowed	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.2	CtRatePolActionList	read-only	This specifies the valid policing actions that may be taken for this port upon exceeding the threshold specified in ctRatePolicingThreshHold.
CTR ctRatePolicingAction	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.3	CtRatePolActionList	read-write	This is the action to be taken if the rate limit is exceeded. This value must be a valid action as specified by the corresponding ctRatePolicingActionsAllowed object. Also, no more than one action may be specified. Attempts to set this value outside of the aforementioned guidelines will fail.
I32 ctRatePolicingThreshHoldMin	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.4	Integer32	read-only	The minimum rate limit value for this entry in kB per second.
I32 ctRatePolicingThreshHold	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.5	Integer32	read-write	The rate limit value for this entry in kB per second. If the rate is exceeded the defined action in ctRatePolicingAction will be enforced. This value may not be set below the minimum rate specified in ctRatePolicingThreshHoldMin.
CTP ctRatePolicingPriorityList	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.6	CtPriList	read-write	This specifies the list of priorities to which this rule applies.
INT ctRatePolicingRuleStatus	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.7	INTEGER	read-write	This object provides both control and status for the associated conceptual row in the table. The value of active(1) indicates that device is actively applying the rate policing rule defined by the other leaves in this row. All other read-write leaves in this row have an effective value of read-only while the row is in the active state. The value of disabled(2) indicates that this row is essentially an available resource which MAY be configured and activated.
I32 ctRatePolicingActionsTaken	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.8	Integer32	read-only	This object counts the number of times the ctRatePolicingAction has been enforced for this particular entry.
CTR ctRatePolicingDirectionsAllowed	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.9	CtRatePolDirectionList	read-only	This specifies the valid policing directions that may be taken for this port.
CTR ctRatePolicingDirection	1.3.6.1.4.1.52.4.1.2.14.7.1.3.1.10	CtRatePolDirectionList	read-write	This specifies the direction of the traffic flow that will be limited.
ctRatePolicingConformance	1.3.6.1.4.1.52.4.1.2.14.7.2
ctRatePolicingGroups	1.3.6.1.4.1.52.4.1.2.14.7.2.1
ctRatePolicingConfigGroup	1.3.6.1.4.1.52.4.1.2.14.7.2.1.1			A collection of objects providing device level control and status information for rate policing.
ctRatePolicingCompliances	1.3.6.1.4.1.52.4.1.2.14.7.2.2
ctRatePolicingCompliance	1.3.6.1.4.1.52.4.1.2.14.7.2.2.1			The compliance statement for devices that support rate policing.

RFC description

Rate policing MIB enabling per-port, per-priority ingress rate limiting on Enterasys network switches.

Start monitoring Enterasys/Cabletron switch (per-port rate policing) 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 CTRON-RATE-POLICING-MIB

What Is CTRON-RATE-POLICING-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description