CISCO-ENHANCED-WRED-MIB
AI MIB Summary
The CISCO-ENHANCED-WRED-MIB enables monitoring and configuration of Weighted Random Early Detection (WRED) parameters, specifically average queue sizes and drop thresholds based on IP precedence or DSCP values, on Cisco hardware interfaces supporting IP fast and flow switching. This module provides visibility into transmit and receive side congestion control metrics, allowing administrators to manage packet filtering and traffic shaping to prevent output interface saturation.
Cisco WRED MIB - Overview Cisco Weighted Random Early Detection/Drop (WRED) is a method which avoids traffic congestion on an output interface. Congestion is detected by computing the average output queue size against queue thresholds, which can be configured either per IP precedence or differentiated services code point (DSCP) based. WRED support are on the IP fast switching and IP flow switching only. It does not apply to IP process switching.
The purpose of this MIB is to provide Weighted Random Early Detection/Drop packet configuration and packet filtering information. This MIB provides the WRED information about the transmit (Tx) side and receive (Rx) side of the modules, for the managed systems that support WRED on both transmit side and receive side.
Main OID:
ciscoEnhancedWredMIB.1.3.6.1.4.1.9.9.222
62
Objects
Active
Status
7
Dependencies
Imported Objects
Objects
62 total| Object Name |
|---|
ciscoEnhancedWredMIBCisco WRED MIB - Overview
Cisco Weighted Random Early Detection/Drop (WRED)
is a method which avoids traffic congestion on an
output interface. Congestion is detected by computing
the average output queue size against queue
thresholds, which can be configured either per IP
precedence or differentiated services code point
(DSCP) based. WRED support are on the IP fast
switching and IP flow switching only. It does not
apply to IP process switching.
The purpose of this MIB is to provide Weighted Random
Early Detection/Drop packet configuration and packet
filtering information. This MIB provides the WRED
information about the transmit (Tx) side and
receive (Rx) side of the modules, for the managed
systems that support WRED on both transmit side
and receive side. MODULE-IDENTITY .1.3.6.1.4.1.9.9.222 |
cewredMIBNotifications OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.0 |
ciscoEnhancedWredMIBObjects OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.1 |
cewredTx OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.1.1 |
cewredTxTableThis table contains the mapping entries that
associate WRED configuration with an egress
interface. This table is used for creating or
modifying or retrieving transmit side WRED
information. SEQUENCE OF CewredTxEntry .1.3.6.1.4.1.9.9.222.1.1.1 |
cewredTxEntryEntries used for providing transmit side
WRED information. If this entry got deleted,
the corresponding cewredConfigGlobIndex
(identified by cewredTxValue) associated entry
in cewredConfigGlobTable is also deleted.
If a entry corresponding to the value of
cewredTxValue does not exist in the
cewredConfigGlobTable, the value of
cewredTxValue can be (re)used as an index to
create a new entry in the
cewredConfigGlobTable for building association
between this mapping table and the
cewredConfigGlobTable. CewredTxEntry .1.3.6.1.4.1.9.9.222.1.1.1.1 |
cewredTxValueThis object specifies the value of
cewredConfigGlobIndex which associates the WRED
configuration with ifIndex associated egress
interface. This value can not be modified when
cewredTxRowStatus is active(1).
The value of this object must not be same as the
values of the following objects:
cewredRxIfValue,
cewredRxValue,
cewredRxMulticastValue.rw CewredIndex .1.3.6.1.4.1.9.9.222.1.1.1.1.1 |
cewredTxRowStatusThe status of this conceptual row.
This object is used for creating, modifying
and deleting entries in the cewredTxTable.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.9.9.222.1.1.1.1.2 |
cewredRx OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.1.2 |
cewredRxIfTableThis table contains the mapping entries that
associate WRED configuration with a source
module and destination interface combination. SEQUENCE OF CewredRxIfEntry .1.3.6.1.4.1.9.9.222.1.2.1 |
cewredRxIfEntryEntries containing the mapping that associate the
receive side WRED configuration to the physical
entity of type PhysicalClass module(9) which supports
WRED with per interface queueing on the receive side.
If this entry got deleted, the corresponding
cewredConfigGlobIndex (identified by cewredRxIfValue)
associated entry in cewredConfigGlobTable is also
deleted.
If a entry corresponding to the value of
cewredRxIfValue does not exist in the
cewredConfigGlobTable, the value of cewredRxIfValue
can be (re)used as an index to create a new entry
in the cewredConfigGlobTable for building
association between this mapping table and the
cewredConfigGlobTable. CewredRxIfEntry .1.3.6.1.4.1.9.9.222.1.2.1.1 |
cewredRxIfValueThis object specifies the value of
cewredConfigGlobIndex which associates the WRED
configuration with the source module (identified by
entPhysicalIndex) and destination interface
(identified by the ifIndex) combination.This value
can't be modified when cewredRxRowStatus is active(1).
The value of this object must not be same as the
values of the following objects:
cewredTxValue,
cewredRxValue,
cewredRxMulticastValue.rw CewredIndex .1.3.6.1.4.1.9.9.222.1.2.1.1.1 |
cewredRxIfRowStatusThe status of this conceptual row.
This object is used for creating, modifying
and deleting entries in the cewredRxIfTable.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.9.9.222.1.2.1.1.2 |
cewredRxTableThis table contains the mapping entries that
associate WRED configuration with a source
module and destination module combination. SEQUENCE OF CewredRxEntry .1.3.6.1.4.1.9.9.222.1.2.2 |
cewredRxEntryEntries containing the mapping that associate the
receive side WRED configuration to the physical
entity of type PhysicalClass module(9) which supports
WRED with per module queueing on the receive side.
If this entry got deleted, the corresponding
cewredConfigGlobIndex (identified by cewredRxValue)
associated entry in cewredConfigGlobTable is also
deleted.
If a entry corresponding to the value of
cewredRxValue does not exist in the
cewredConfigGlobTable, the value of cewredRxValue
can be (re)used as an index to create a new entry
in the cewredConfigGlobTable for building
association between this mapping table and the
cewredConfigGlobTable. CewredRxEntry .1.3.6.1.4.1.9.9.222.1.2.2.1 |
cewredRxSourceIdThe entPhysicalIndex of the source module,
supporting per module queueing on receive side
to which WRED configuration was attached. PhysicalIndex (ENTITY-MIB) .1.3.6.1.4.1.9.9.222.1.2.2.1.1 |
cewredRxDestIdOn the receive side, WRED configuration is applied on
the traffic going from a source module to a destination
module. This object represents the entPhysicalIndex of
the destination module where source module is being
represented by cewredRxSourceId. PhysicalIndex (ENTITY-MIB) .1.3.6.1.4.1.9.9.222.1.2.2.1.2 |
cewredRxValueThis object specifies the value which can be used by
cewredConfigGlobIndex object, which associates WRED
configuration with the source module (identified by
cewredRxSourceId) and destination module
(identified by cewredRxDestId) combination. This
value can't be modified when cewredRxRowStatus is
active(1).
The value of this object must not be same as the values
of the following objects:
cewredTxValue,
cewredRxIfValue,
cewredRxMulticastValue.rw CewredIndex .1.3.6.1.4.1.9.9.222.1.2.2.1.3 |
cewredRxRowStatusThe status of this conceptual row.
This object is used for creating, modifying
and deleting entries in the cewredRxTable.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.9.9.222.1.2.2.1.4 |
cewredRxMulticastTableThis table contains the mapping entries that
associate WRED configuration on the multicast
traffic of a module on the receive side. SEQUENCE OF CewredRxMulticastEntry .1.3.6.1.4.1.9.9.222.1.2.3 |
cewredRxMulticastEntryEntries used to provide WRED information
for the physical entities of type PhysicalClass
module(9) that support WRED on multicast traffic
on the receive side. If this entry got deleted,
the corresponding cewredConfigGlobIndex
(identified by cewredRxMulticastValue) associated
entry in cewredConfigGlobTable is also deleted.
If a entry corresponding to the value of
cewredRxMulticastValue does not exist in the
cewredConfigGlobTable, the value of
cewredRxMulticastValue can be (re)used as an
index to create a new entry in the
cewredConfigGlobTable for building association
between this mapping table and the
cewredConfigGlobTable. CewredRxMulticastEntry .1.3.6.1.4.1.9.9.222.1.2.3.1 |
cewredRxMulticastValueThis object specifies the value which can be used by
cewredConfigGlobIndex object, which associates
WRED configuration on the multicast traffic of the
source module (identified by entPhysicalIndex) on the
receive side. This value can't be modified when
cewredRxMulticastRowStatus is active(1).
The value of this object must not be same as the values
of the following objects:
cewredTxValue,
cewredRxIfValue,
cewredRxValue.rw CewredIndex .1.3.6.1.4.1.9.9.222.1.2.3.1.1 |
cewredRxMulticastRowStatusThe status of this conceptual row.
This object is used for creating, modifying
and deleting entries in the cewredRxMulticastTable.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.9.9.222.1.2.3.1.2 |
cewredConfig OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.1.3 |
cewredConfigGlobTableA table of WRED global configuration variables. SEQUENCE OF CewredConfigGlobEntry .1.3.6.1.4.1.9.9.222.1.3.1 |
cewredConfigGlobEntryA collection of configuration entries.
On the transmit side of a module an Entry of
this table is created/deleted when the interface
is associated/disassociated respectively with random
early detection. On the receive side, an entry of
this table is created or deleted when the entries
representing cewredConfigGlobIndex is
associated/disassociated respectively with
random early detection.
An entry in this table created only when
the corresponding entry providing the value for
cewredConfigGlobIndex is created in one of the
following mapping tables:
cewredTxTable,
cewredRxIfTable,
cewredRxTable,
cewredRxMulticastTable.
Deletion of this entry will not cause the deletion
of the corresponding entry (entry providing
cewredConfigGlobIndex) in the mapping
tables. CewredConfigGlobEntry .1.3.6.1.4.1.9.9.222.1.3.1.1 |
cewredConfigGlobIndexIndex into the cewredConfigGlobTable. For
the managed systems which support WRED configuration
on both transmit side and receive side,
this index will be obtained by one of the following
mapping table entries:
cewredTxTable,
cewredRxIfTable,
cewredRxTable,
cewredRxMulticastTable.
This index will be obtained through cewredTxValue
object in case of WRED applied on an interface on the
transmit side. If WRED is applied on the
receive side, this index will be obtained
through cewredRxIfvalue if the module supports
per module/interface queueing on the receive side,
otherwise this index will be obtained through
to cewredRxValue. For multicast on the receive side,
this index will be obtained through
cewredRxMulticastValue.
For the managed systems, which only support interface
level WRED configuration, this value can be equal to
the ifIndex associated with the interface. CewredIndex .1.3.6.1.4.1.9.9.222.1.3.1.1.1 |
cewredConfigGlobCosGroupNameThe name of the class of service queue group
under which all WRED parameters are configured.
For the managed systems, which do not support
class of service queue groups, this value will
be a zero length string.rw SnmpAdminString (SNMP-FRAMEWORK-MIB) .1.3.6.1.4.1.9.9.222.1.3.1.1.2 |
cewredConfigGlobQueueWeightThe decay factor for the queue average calculation.
Numbers are 2's exponent up to 16. The smaller the
number, the faster it decays.rw Unsigned32 .1.3.6.1.4.1.9.9.222.1.3.1.1.3 |
cewredConfigGlobDscpPrecThe classification mechanism used by WRED - precedence
or DSCP-based. This entry can't be modified if there
exists corresponding entry with different RED mechanism
in the following cewredConfigRedTable. For example
for a given cewredConfigGlobIndex, if there exists
precedence based configuration in the
cewredConfigRedTable, this value can't be changed
to dscp(2).rw CewredRedMechanism .1.3.6.1.4.1.9.9.222.1.3.1.1.4 |
cewredConfigGlobRowStatusThe status of this conceptual row.
This object is used for creating, modifying
and deleting entries in the cewredConfigGlobTable.
This value can be set to active(1) only if the
corresponding row in one of the following mapping
tables is having a row status value active(1):
cewredTxTable,
cewredRxIfTable,
cewredRxTable,
cewredRxMulticastTable.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.9.9.222.1.3.1.1.5 |
cewredConfigRedTableA table of WRED configuration values with respect
to the IP precedence or DSCP value of packets. SEQUENCE OF CewredConfigRedEntry .1.3.6.1.4.1.9.9.222.1.3.2 |
cewredConfigRedEntryWRED IP precedence/DSCP configuration table entry.
If the WRED configuration is per interface based,
an entry of this table is created/deleted when
a combination of interface and cewredConfigRedValue
is associated/disassociated respectively with
random early detection.
On the receive side, an entry of this
table is created or deleted when a combination
of entries representing cewredConfigGlobIndex
and cewredConfigRedValue is
associated/disassociated respectively with random
early detection. CewredConfigRedEntry .1.3.6.1.4.1.9.9.222.1.3.2.1 |
cewredConfigRedValueThe IP precedence or DSCP value of this entry. Unsigned32 .1.3.6.1.4.1.9.9.222.1.3.2.1.1 |
cewredConfigRedQueueNumberThe queue number of the distributed round robin queue
associated with this RedValue. For each queue there
are RED parameters associated with it depending
upon its precedence or DSCP value. For the managed
systems which do not support multiple distributed round
robin queues, this number will be 1.rw CewredQueueNumber .1.3.6.1.4.1.9.9.222.1.3.2.1.2 |
cewredConfigRedProfileThe value of the WRED profile associated with the
cewredConfigRedValue. This object value will be
equal to the WRED profile value for the managed systems
that support a mapping of many precedences or DSCP
values to a WRED profile, otherwise this object value
will be same as the precedence or DSCP value associated
with this entry.rw CewredRedProfile .1.3.6.1.4.1.9.9.222.1.3.2.1.3 |
cewredConfigRedMinThresholdThe average queue depth at which WRED
begins to drop packets. Below this value
no packets will be dropped.rw Unsigned32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.3.2.1.4 |
cewredConfigRedMaxThresholdThe average queue depth at which WRED may
begin to drop all packets. Above this value
all the packets will be droppedrw Unsigned32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.3.2.1.5 |
cewredConfigRedPktsDropFractThe fraction of packets to be dropped when
the average queue depth is at
cewredConfigRedMaxThreshold. The mark
probability denominator maps to this object.
For example if this value is 500, then one
out of every 500 packets is to be dropped when
the average queue length is at the maximum
threshold.rw Unsigned32 .1.3.6.1.4.1.9.9.222.1.3.2.1.6 |
cewredConfigRedRowStatusThe status of this conceptual row.
This object is used for creating, modifying
and deleting entries in the cewredConfigRedTable.
This value can be set to active(1) only if the
corresponding row in one of the following mapping
tables is having a row status value active(1):
cewredTxTable,
cewredRxIfTable,
cewredRxTable,
cewredRxMulticastTable.rw RowStatus (SNMPv2-TC) .1.3.6.1.4.1.9.9.222.1.3.2.1.7 |
cewredQueue OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.1.4 |
cewredQueueParamTableA table of WRED queue parameters. SEQUENCE OF CewredQueueParamEntry .1.3.6.1.4.1.9.9.222.1.4.1 |
cewredQueueParamEntryAn entry in the table of WRED queue parameters.
Entries represent the queue parameters of the
distributed round robin queues. CewredQueueParamEntry .1.3.6.1.4.1.9.9.222.1.4.1.1 |
cewredQueueParamNumberThe queue number associated with this entry.
There can be multiple distributed round robin
queues exists on the transmit side as well as on
the receive side of the managed system. For each
queue there are WRED parameters associated with
it depend upon its precedence or DSCP value.
For the managed systems which do not support
multiple distributed round robin queues this
number will be 1. CewredQueueNumber .1.3.6.1.4.1.9.9.222.1.4.1.1.1 |
cewredQueueParamWeightThe weight of this queue. The weights give a
relative bandwidth for each queue when there
is congestion. The distributed round robin
algorithm dequeues data from each queue for
processing depending upon its weight.rw Unsigned32 .1.3.6.1.4.1.9.9.222.1.4.1.1.2 |
cewredQueueParamAverageThe computed queue average length. This value is
based on the Exponential weighting factor
(cewredConfigGlobQueueWeight), the old average
length of the queue and current queue size.ro Gauge32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.4.1.1.3 |
cewredQueueParamMaxAverageHistorically maximum value of
cewredQueueParamAverage. Write is required only to
clear this object, i.e, this object can only be set
to zero.rw Gauge32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.4.1.1.4 |
cewredQueueParamDepthThe number of packets currently withheld
in the queue and awaiting transmission.ro Gauge32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.4.1.1.5 |
cewredQueueParamMaxDepthHistorically maximum value of cewredQueueParamDepth.
Write is required only to clear this object,
i.e, this object can only be set to zero.rw Gauge32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.4.1.1.6 |
cewredStat OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.1.5 |
cewredStatTableA table of WRED status information with respect to
the IP precedence or DSCP value of packets. SEQUENCE OF CewredStatEntry .1.3.6.1.4.1.9.9.222.1.5.1 |
cewredStatEntryThe WRED status information entry. CewredStatEntry .1.3.6.1.4.1.9.9.222.1.5.1.1 |
cewredStatRedProfileThe value of the WRED profile associated with the
entry. This value will be equal to the WRED
profile value for the managed systems that support
a mapping of many precedences or DSCP values to a
WRED profile, otherwise this object value will be same
as the precedence or DSCP value. CewredRedProfile .1.3.6.1.4.1.9.9.222.1.5.1.1.1 |
cewredStatSwitchedPktsThe number of packets output by WRED.ro Counter32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.5.1.1.2 |
cewredStatRandomFilteredPktsThe number of packets filtered/dropped when average
queue length exceeds cewredRedConfigMinThreshold
and less than cewredConfigRedMaxThreshold and meet a
defined random drop policy pointed by the WRED
config tables.ro Counter32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.5.1.1.3 |
cewredStatMaxFilteredPktsThe number of packets filtered/dropped when average
queue length exceeds cewredConfigRedMaxThreshold.ro Counter32 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.5.1.1.4 |
cewredStatSwitchedPkts64The number of packets output by WRED. This object is
a 64-bit version of cewredStatSwitchedPkts.ro Counter64 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.5.1.1.5 |
cewredStatRandomFilteredPkts64The number of packets filtered/dropped when average
queue length exceeds cewredRedConfigMinThreshold
and less than cewredConfigRedMaxThreshold and meet a
defined random drop policy pointed by the WRED
config tables. This object is a 64-bit version of
cewredStatRandomFilteredPkts.ro Counter64 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.5.1.1.6 |
cewredStatMaxFilteredPkts64The number of packets filtered/dropped when average
queue length exceeds cewredConfigRedMaxThreshold.
This object is a 64-bit version of
cewredStatMaxFilteredPkts.ro Counter64 UNITS "packets" .1.3.6.1.4.1.9.9.222.1.5.1.1.7 |
cewredMIBConformance OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.3 |
cewredMIBCompliances OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.3.1 |
cewredMIBGroups OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.222.3.2 |