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mibs/cisco/CISCO-SLB-DFP-MIB
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mibs/cisco/CISCO-SLB-DFP-MIB
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-- *****************************************************************
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-- CISCO-SLB-DFP-MIB.my: MIB for Server Load Balancing Clients
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--
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-- July 2008, Abhishek Tanwar
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--
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-- Copyright (c) 2008-2009 by Cisco Systems Inc.
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-- All rights reserved.
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--
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-- *****************************************************************
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CISCO-SLB-DFP-MIB DEFINITIONS ::= BEGIN
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IMPORTS
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MODULE-IDENTITY,
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OBJECT-TYPE,
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NOTIFICATION-TYPE,
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Unsigned32
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FROM SNMPv2-SMI
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MODULE-COMPLIANCE,
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OBJECT-GROUP,
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NOTIFICATION-GROUP
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FROM SNMPv2-CONF
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SnmpAdminString
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FROM SNMP-FRAMEWORK-MIB
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TEXTUAL-CONVENTION
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FROM SNMPv2-TC
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EntPhysicalIndexOrZero
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FROM CISCO-TC
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ciscoMgmt
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FROM CISCO-SMI;
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ciscoSlbDfpMIB MODULE-IDENTITY
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LAST-UPDATED "200901290000Z"
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ORGANIZATION "Cisco Systems, Inc."
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CONTACT-INFO
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"Cisco Systems
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Customer Service
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Postal:170 W. Tasman Drive
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San Jose, CA 95134
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USA
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Tel:+1 800 553-NETS
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E-mail:cs-asngw@cisco.com"
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DESCRIPTION
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"This MIB reports the congestion status of the real server.
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A server can be in congested state due to high memory
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consumption, high CPU utilization or high number of clients
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being served by it. Congestion can cause delay in server
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response time.
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DFP (Dynamic Feedback Protocol) weight values are used as a
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metric to monitor the congestion of the server.
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This MIB generates notifications when congestion state
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is detected on the real server.
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DFP weight is calculated as follows
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BindingWeight=(Maxbindings-numberOfBindings)/Maxbindings
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CPUMemWeight=(cpu + mem)/32
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Weight = BindingWeight*CPUMemWeight*dfp_max_weight
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Here,
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- Maxbindings is the maximum number of bindings allowed on the
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server.
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- dfp_max_weight is the maximum possible value of DFP weight
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(24).
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- numberOfBindings is the number of mobile bindings currently
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present with the server.
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The DFP weight at which congestion is detected is configurable.
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If the DFP weight of the system falls below this value, then
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the system is treated as congested and notification is
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generated."
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REVISION "200901290000Z"
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DESCRIPTION
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"Initial version of this MIB module."
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::= { ciscoMgmt 689 }
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ciscoSlbDfpMIBNotifs OBJECT IDENTIFIER
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::= { ciscoSlbDfpMIB 0 }
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ciscoSlbDfpMIBObjects OBJECT IDENTIFIER
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::= { ciscoSlbDfpMIB 1 }
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ciscoSlbDfpMIBConform OBJECT IDENTIFIER
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::= { ciscoSlbDfpMIB 2 }
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cslbcDfpCongestionOnsetThreshold OBJECT-TYPE
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SYNTAX CslbcDfpValue
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UNITS "DFP weight"
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object specifes when congestion occurs. When the DFP
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level of the system drops below this value, the system is
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marked as congested. This value is same for all the
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processors."
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DEFVAL { 0 }
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::= { ciscoSlbDfpMIBObjects 1 }
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cslbcDfpCongestionAbateThreshold OBJECT-TYPE
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SYNTAX CslbcDfpValue
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UNITS "DFP weight"
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MAX-ACCESS read-write
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STATUS current
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DESCRIPTION
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"This object specifies when decongestion occurs. When the DFP
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level of the system rises above this value, the system is
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marked as decongested. This value is same for all processors."
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DEFVAL { 0 }
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::= { ciscoSlbDfpMIBObjects 2 }
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cslbcDfpCongestionThresholdType OBJECT-TYPE
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SYNTAX INTEGER {
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reject(1),
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abort(2),
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redirect(3),
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drop(4)
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}
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MAX-ACCESS accessible-for-notify
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STATUS current
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DESCRIPTION
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"This object specifies the action taken when the congestion
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threshold is reached.
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The valid congestion action type are
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o reject - Incoming registration requests will be rejected when
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this congestion type is configured.
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o abort - Registration request being processed will be aborted
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when this congestion type is configured.
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o redirect - Incoming registration requests will be redirected
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to another Home Agent when this congestion type is configured.
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o drop - Existing idle mobile IP bindings will be dropped when
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this congestion type is configured.
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A mobile IP binding is a record present with the server that
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associates the home address given to the mobile node by its
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home network with the care of address granted to it by the
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foreign network while it is roaming.
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The Home Agent is a real server that maintains mobile
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bindings."
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::= { ciscoSlbDfpMIBObjects 3 }
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cslbcProcessorDfpValTable OBJECT-TYPE
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SYNTAX SEQUENCE OF CslbcProcessorDfpValEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This table lists the DFP status for each processor for which
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DFP weights are monitored."
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::= { ciscoSlbDfpMIBObjects 4 }
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cslbcProcessorDfpValEntry OBJECT-TYPE
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SYNTAX CslbcProcessorDfpValEntry
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"The entry contains DFP value for one processor.
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A row is added to this table when congestion needs to be
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monitored on a processor. Row is deleted when congestion no
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longer needs to be monitored."
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INDEX { cslbcProcessorDfpValPhysicalIndex }
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::= { cslbcProcessorDfpValTable 1 }
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CslbcProcessorDfpValEntry ::= SEQUENCE {
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cslbcProcessorDfpValPhysicalIndex EntPhysicalIndexOrZero,
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cslbcProcessorDfpValDescription SnmpAdminString,
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cslbcProcessorDfpValDfpValue CslbcDfpValue
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}
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cslbcProcessorDfpValPhysicalIndex OBJECT-TYPE
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SYNTAX EntPhysicalIndexOrZero
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MAX-ACCESS not-accessible
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STATUS current
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DESCRIPTION
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"This element contains the index of the physical entity or
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identifier of the processor for which the DFP value is
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maintained."
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::= { cslbcProcessorDfpValEntry 1 }
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cslbcProcessorDfpValDescription OBJECT-TYPE
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SYNTAX SnmpAdminString
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This element contains the description for the congestion
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configured on for processor."
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::= { cslbcProcessorDfpValEntry 2 }
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cslbcProcessorDfpValDfpValue OBJECT-TYPE
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SYNTAX CslbcDfpValue
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MAX-ACCESS read-only
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STATUS current
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DESCRIPTION
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"This object indicates DFP value for the processor."
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::= { cslbcProcessorDfpValEntry 3 }
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CslbcDfpValue ::= TEXTUAL-CONVENTION
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DISPLAY-HINT "d"
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STATUS current
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DESCRIPTION
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"This textual convention defines valid ranges DFP values
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similar to slbDfpRealWeight object defined in CISCO-SLB-MIB."
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SYNTAX Unsigned32 (0..65535)
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cslbcSlbDfpCongestionOnset NOTIFICATION-TYPE
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OBJECTS {
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cslbcProcessorDfpValDescription,
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cslbcProcessorDfpValDfpValue,
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cslbcDfpCongestionThresholdType,
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cslbcDfpCongestionOnsetThreshold
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}
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STATUS current
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DESCRIPTION
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"The server generates this notification when value of
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cslbcInstanceDfpValue object drops below the threshold
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indicated
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by the cslbcDfpCongestionOnsetThreshold object."
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::= { ciscoSlbDfpMIBNotifs 1 }
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cslbcSlbDfpCongestionAbate NOTIFICATION-TYPE
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OBJECTS {
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cslbcProcessorDfpValDescription,
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cslbcProcessorDfpValDfpValue,
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cslbcDfpCongestionAbateThreshold,
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cslbcDfpCongestionThresholdType
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}
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STATUS current
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DESCRIPTION
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"The server generates this notification when value of
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cslbcInstanceDfpValue object rises above the threshold
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indicated
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by the cslbcDfpCongestionAbateThreshold object."
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::= { ciscoSlbDfpMIBNotifs 2 }
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-- Conformance
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ciscoSlbDfpMIBCompliances OBJECT IDENTIFIER
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::= { ciscoSlbDfpMIBConform 1 }
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ciscoSlbDfpMIBGroups OBJECT IDENTIFIER
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::= { ciscoSlbDfpMIBConform 2 }
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ciscoSlbDfpMIBCompliance MODULE-COMPLIANCE
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STATUS current
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DESCRIPTION
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"The compliance statement for entities which implement
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ciscoSlbDfp MIB module."
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MODULE -- this module
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MANDATORY-GROUPS {
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ciscoSlbDfpInstanceGroup,
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cslbcSlbDfpScalarsGroup,
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cslbcSlbDfpCongestionGroup
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}
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::= { ciscoSlbDfpMIBCompliances 1 }
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-- Units of Conformance
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ciscoSlbDfpInstanceGroup OBJECT-GROUP
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OBJECTS {
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cslbcProcessorDfpValDescription,
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cslbcProcessorDfpValDfpValue
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}
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STATUS current
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DESCRIPTION
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"This group represents the fields that identifies the processor
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and associated DFP value."
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::= { ciscoSlbDfpMIBGroups 1 }
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cslbcSlbDfpScalarsGroup OBJECT-GROUP
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OBJECTS {
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cslbcDfpCongestionOnsetThreshold,
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cslbcDfpCongestionAbateThreshold,
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cslbcDfpCongestionThresholdType
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}
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STATUS current
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DESCRIPTION
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"This group represents the set of thresholds against which the
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DFP value is compared."
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::= { ciscoSlbDfpMIBGroups 2 }
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cslbcSlbDfpCongestionGroup NOTIFICATION-GROUP
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NOTIFICATIONS {
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cslbcSlbDfpCongestionOnset,
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cslbcSlbDfpCongestionAbate
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}
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STATUS current
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DESCRIPTION
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"This groutp represents the group of notifications on Home
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Agent."
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::= { ciscoSlbDfpMIBGroups 3 }
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END
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