DOCS-LOADBALANCING-MIB

TEXTUAL-CONVENTION

This textual convention enumerates the Initialization techniques for Dynamic Channel Change (DCC). The techniques are represented by the 5 most significant bits (MSB). Bits 0 through 4 map to initialization techniques 0 through 4. Each bit position represents the internal associated technique as described below: reinitializeMac(0) : Reinitialize the MAC broadcastInitRanging(1): Perform Broadcast initial ranging on new channel before normal operation unicastInitRanging(2) : Perform unicast ranging on new channel before normal operation initRanging(3) : Perform either broadcast or unicast ranging on new channel before normal operation direct(4) : Use the new channel(s) directly without re-initializing or ranging Multiple bits selection in 1's means the CMTS selects the best suitable technique among the selected in a proprietary manner. An empty value or a value with all bits in '0' means no channel changes allowed

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Setting this object to true(1) enables internal autonomous load balancing operation on this CMTS. Setting it to false(2) disables the autonomous load balancing operations. However moving a cable modem via docsLoadBalChgOverTable is allowed even when this object is set to false(2).

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The list contains the load balancing attributes associated with the cable modem.

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Additional objects for docsIfCmtsCmStatusTable entry that relate to load balancing

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The Group ID associated with this cable modem.

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The Policy ID associated with this cable modem.

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The Priority associated with this cable modem.

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The mac address of the cable modem that the CMTS instructs to move to a new downstream frequency and/or upstream channel.

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The new downstream frequency to which the cable modem is instructed to move. The value 0 indicates that the CMTS does not create a TLV for the downstream frequency in the DCC-REQ message. This object has no meaning when executing UCC operations.

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The new upstream channel ID to which the cable modem is instructed to move. The value -1 indicates that the CMTS does not create a TLV for the upstream channel ID in the channel change request.

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The initialization technique that the cable modem is instructed to use when performing change over operation. By default this object is initialized with all the defined bits having a value of '1'.

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The change over command that the CMTS is instructed use when performing change over operation. The any(1) value indicates that the CMTS is to use its own algorithm to determine the appropriate command.

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The command to execute the DCC/UCC operation when set to true(1). The following are reasons for rejecting an SNMP SET to this object: - The MAC address in docsLoadBalChgOverMacAddr is not an existing MAC address in docsIfCmtsMacToCmEntry. - docsLoadBalChgOverCmd is ucc(3) and docsLoadBalChgOverUpChannelId is '-1', - docsLoadBalChgOverUpChannelId is '-1' and docsLoadBalChgOverDownFrequency is '0'. - DCC/UCC operation is currently being executed for the cable modem, on which the new command is committed, specifically if the value of docsLoadBalChgOverStatusValue is one of: messageSent(1), modemDeparting(4), waitToSendMessage(6). - An UCC operation is committed for a non-existing upstream channel ID or the corresponding ifOperStatus is down(2). - A DCC operation is committed for an invalid or non-existing downstream frequency, or the corresponding ifOperStatus is down(2). In those cases, the SET is rejected with an error code 'commitFailed'. After processing the SNMP SET the information in docsLoadBalChgOverGroup is updated in a corresponding entry in docsLoadBalChgOverStatusEntry. Reading this object always returns false(2).

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The value of sysUpTime when docsLoadBalChgOverCommit was last set to true. Zero if never set.

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A table of CMTS operation entries to reports the status of cable modems instructed to move to a new downstream and/or upstream channel. Using the docsLoadBalChgOverGroup objects. An entry in this table is created or updated for the entry with docsIfCmtsCmStatusIndex that correspond to the cable modem MAC address of the Load Balancing operation. docsLoadBalChgOverCommit to true(1).

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A CMTS operation entry to instruct a cable modem to move to a new downstream frequency and/or upstream channel. An operator can use this to initiate an operation in CMTS to instruct the selected cable modem to move to a new downstream frequency and/or upstream channel.

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The mac address set in docsLoadBalChgOverMacAddress.

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The Downstream frequency set in docsLoadBalChgOverDownFrequency.

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The upstream channel ID set in docsLoadBalChgOverUpChannelId.

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The initialization technique set in docsLoadBalChgOverInitTech.

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The load balancing command set in docsLoadBalChgOverCmd.

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The status of the specified DCC/UCC operation. The enumerations are: messageSent(1): The CMTS has sent change over request message to the cable modem. noOpNeed(2): A operation was requested in which neither the DS Frequency nor the Upstream Channel ID was changed. An active value in this entry's row status indicates that no CMTS operation is required. modemDeparting(3): The cable modem has responded with a change over response of either a DCC-RSP with a confirmation code of depart(180) or a UCC-RSP. waitToSendMessage(4): The specified operation is active and CMTS is waiting to send the channel change message with channel info to the cable modem. cmOperationRejected(5): Channel Change (such as DCC or UCC) operation was rejected by the cable modem. cmtsOperationRejected(6) Channel Change (such as DCC or UCC) operation was rejected by the Cable modem Termination System. timeOutT13(7): Failure due to no DCC-RSP with confirmation code depart(180) received prior to expiration of the T13 timer. timeOutT15(8): T15 timer timed out prior to the arrival of a bandwidth request, RNG-REQ message, or DCC-RSP message with confirmation code of arrive(181) from the cable modem. rejectInit(9): DCC operation rejected due to unsupported initialization tech requested. success(10): CMTS received an indication that the CM successfully completed the change over operation. e.g., If an initialization technique of re-initialize the MAC is used, success in indicated by the receipt of a DCC-RSP message with a confirmation code of depart(180). In all other cases, success is indicated by: (1) the CMTS received a DCC-RSP message with confirmation code of arrive(181) or (2) the CMTS internally confirms the presence of the CM on the new channel.

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The value of sysUpTime when docsLoadBalChgOverStatusValue was last updated.

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This table contains the attributes of the load balancing groups present in this CMTS.

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A set of attributes of load balancing group in the CMTS. It is index by a docsLoadBalGrpId which is unique within a CMTS. Entries in this table persist after CMTS initialization.

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A unique index assigned to the load balancing group by the CMTS.

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A value true(1)Indicates type of load balancing group. A Restricted Load Balancing Group is associated to a specific provisioned set of cable modems. Restricted Load Balancing Group is used to accommodate a topology specific or provisioning specific restriction. Example such as a group that are reserved for business customers). Setting this object to true(1) means it is a Restricted Load Balancing type and setting it to false(2) means it is a General Load Balancing group type. This object should not be changed while its group ID is referenced by an active entry in docsLoadBalRestrictCmEntry.

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The initialization techniques that the CMTS can use when load balancing cable modems in the load balancing group. By default this object is initialized with all the defined bits having a value of '1'.

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Each Load Balancing Group has a default Load Balancing Policy. A policy is described by a set of conditions (rules) that govern the load balancing process for a cable modem. The CMTS assigns this Policy ID value to a cable modem associated with the group ID when the cable modem does not signal a Policy ID during registration. The Policy ID value is intended to be a numeric reference to a row entry in docsLoadBalPolicyEntry. However, It is not required to have an existing or active entry in docsLoadBalPolicyEntry when setting the value of docsLoadBalGrpDefaultPolicy, in which case it indicates no policy is associated with the load Balancing Group. The Policy ID of value 0 is reserved to indicate no policy is associated with the load balancing group.

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Setting this object to true(1) enables internal autonomous load balancing on this group. Setting it to false(2) disables the load balancing operation on this group.

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The number of successful load balancing change over operations initiated within this load balancing group.

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The number of failed load balancing change over operations initiated within this load balancing group.

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Indicates the status of the row in this table. Setting this object to 'destroy' or 'notInService' for a group ID entry already referenced by docsLoadBalChannelEntry, docsLoadBalChnPairsEntry or docsLoadBalRestrictCmEntry returns an error code inconsistentValue.

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Lists all upstream and downstream channels associated with load balancing groups.

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Lists a specific upstream or downstream, within a load Balancing group. An entry in this table exists for each ifEntry with an ifType of docsCableDownstream(128) and docsCableUpstream(129) associated with the Load Balancing Group. Entries in this table persist after CMTS initialization.

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The ifIndex of either the downstream or upstream.

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Indicates the status of the rows in this table. Creating entries in this table requires an existing value for docsLoadBalGrpId in docsLoadBalGrpEntry and an existing value of docsLoadBalChannelIfIndex in ifEntry, otherwise is rejected with error 'noCreation'. Setting this object to 'destroy' or 'notInService for a a row entry that is being referenced by docsLoadBalChnPairsEntry is rejected with error code inconsistentValue.

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This table contains pairs of upstream channels within a Load Balancing Group. Entries in this table are used to override the initialization techniques defined for the associated Load Balancing Group.

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An entry in this table describes a channel pair for which an initialization technique override is needed. On a CMTS which supports logical upstream channels (ifType is equal to docsCableUpstreamChannel(205)), the entries in this table correspond to pairs of ifType 205. On a CMTS which only supports physical upstream channels (ifType is equal to docsCableUpstream(129)), the entries in this table correspond to pairs of ifType 129. Entries in this table persist after CMTS initialization.

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This index indicates the ifIndex of the upstream channel from which a cable modem would depart in a load balancing channel change operation.

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This index indicates the ifIndex of the upstream channel on which a cable modem would arrive in a load balancing channel change operation.

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Operational status of the channel pair. The value operational(1) indicates that ifOperStatus of both channels is up(1). The value notOperational(2) means that ifOperStatus of one or both is not up(1).

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Specifies initialization technique for load balancing for the Depart/Arrive pair. By default this object's value is the initialization technique configured for the Load Balancing Group indicated by docsLoadBalGrpId.

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The object for conceptual rows creation. An attempt to create a row with values for docsLoadBalChnPairsIfIndexDepart or docsLoadBalChnPairsIfIndexArrive which are not a part of the Load Balancing Group (or for a 2.0 CMTS are not logical channels (ifType 205)) are rejected with a 'noCreation' error status reported. There is no restriction on settings columns in this table when the value of docsLoadBalChnPairsRowStatus is active(1).

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Lists all cable modems in each Restricted Load Balancing Groups.

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An entry of modem within a restricted load balancing group type. An entry represents a cable modem that is associated with the Restricted Load Balancing Group ID of a Restricted Load Balancing Group. Entries in this table persist after CMTS initialization.

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The index that uniquely identifies an entry which represents restricted cable modem(s) within each Restricted Load Balancing Group.

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Mac Address of the cable modem within the restricted load balancing group.

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A bit mask acting as a wild card to associate a set of modem MAC addresses to the same Group ID. Cable modem look up is performed first with entries containing this value not null, if several entries match, the largest consecutive bit match from MSB to LSB is used. Empty value is equivalent to the bit mask all in ones.

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Indicates the status of the rows in this table. The attempt to create an entry associated to a group ID with docsLoadBalGrpIsRestricted equal to false(2) returns an error 'noCreation'. There is no restriction on settings columns in this table any time.

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This table describes the set of Load Balancing policies. Rows in this table might be referenced by rows in docsLoadBalGrpEntry.

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Entries containing rules for policies. When a load balancing policy is defined by multiple rules, all the rules apply. Load balancing rules can be created to allow for specific vendor-defined load balancing actions. However there is a basic rule that the CMTS is required to support by configuring a pointer in docsLoadBalPolicyRulePtr to the table docsLoadBalBasicRuleTable. Vendor specific rules may be added by pointing the object docsLoadBalPolicyRulePtr to proprietary mib structures. Entries in this table persist after CMTS initialization.

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An index identifying the Load Balancing Policy.

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An index for the rules entries associated within a policy.

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A pointer to an entry in a rule table. E.g., docsLoadBalBasicRuleEnable in docsLoadBalBasicRuleEntry. A value pointing to zeroDotZero, an inactive Row or a non-existing entry is treated as no rule defined for this policy entry.

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The status of this conceptual row. There is no restriction on settings columns in this table when the value of docsLoadBalPolicyRowStatus is active(1). Setting this object to 'destroy' or 'notInService' for a row entry that is being referenced by docsLoadBalGrpDefaultPolicy in docsLoadBalGrpEntry returns an error code inconsistentValue.

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DOCSIS defined basic ruleset for load Balancing Policy. This table enables of disable load balancing for the groups pointing to this ruleset in the policy group.

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An entry of DOCSIS defined basic ruleset. The object docsLoadBalBasicRuleEnable is used for instantiating an entry in this table via a RowPointer. Entries in this table persist after CMTS initialization.

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The unique index for this row.

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When using this ruleset, load balancing is enabled or disabled by the values enabled(1) and disabled(2) respectively. Additionally, a Load Balancing disabling period is defined in docsLoadBalBasicRuleDisStart and docsLoadBalBasicRuleDisPeriod if this object value is set to disabledPeriod(3).

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if object docsLoadBalBasicRuleEnable is disablePeriod(3) Load Balancing is disabled starting at this object value time (seconds from 12 AM). Otherwise, this object has no meaning.

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If object docsLoadBalBasicRuleEnable is disablePeriod(3) Load Balancing is disabled for the period of time defined between docsLoadBalBasicRuleDisStart and docsLoadBalBasicRuleDisStart plus the period of time of docsLoadBalBasicRuleDisPeriod. Otherwise, this object value has no meaning.

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This object is to create or delete rows in this table. There is no restriction for changing this row status or object's values in this table at any time.

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