| HCNUM-TC DEFINITIONS ::= BEGIN |
| |
| IMPORTS |
| MODULE-IDENTITY, mib-2, Counter64 |
| FROM SNMPv2-SMI |
| TEXTUAL-CONVENTION |
| FROM SNMPv2-TC; |
| |
| hcnumTC MODULE-IDENTITY |
| LAST-UPDATED "200006080000Z" |
| |
| ORGANIZATION "IETF OPS Area" |
| CONTACT-INFO |
| " E-mail: mibs@ops.ietf.org |
| Subscribe: majordomo@psg.com |
| with msg body: subscribe mibs |
| |
| Andy Bierman |
| Cisco Systems Inc. |
| 170 West Tasman Drive |
| San Jose, CA 95134 USA |
| +1 408-527-3711 |
| abierman@cisco.com |
| |
| Keith McCloghrie |
| Cisco Systems Inc. |
| 170 West Tasman Drive |
| San Jose, CA 95134 USA |
| +1 408-526-5260 |
| kzm@cisco.com |
| |
| Randy Presuhn |
| BMC Software, Inc. |
| Office 1-3141 |
| 2141 North First Street |
| San Jose, California 95131 USA |
| +1 408 546-1006 |
| rpresuhn@bmc.com" |
| DESCRIPTION |
| "A MIB module containing textual conventions |
| for high capacity data types. This module |
| addresses an immediate need for data types not directly |
| supported in the SMIv2. This short-term solution |
| is meant to be deprecated as a long-term solution |
| is deployed." |
| REVISION "200006080000Z" |
| DESCRIPTION |
| "Initial Version of the High Capacity Numbers |
| MIB module, published as RFC 2856." |
| ::= { mib-2 78 } |
| |
| CounterBasedGauge64 ::= TEXTUAL-CONVENTION |
| STATUS current |
| DESCRIPTION |
| "The CounterBasedGauge64 type represents a non-negative |
| integer, which may increase or decrease, but shall never |
| exceed a maximum value, nor fall below a minimum value. The |
| maximum value can not be greater than 2^64-1 |
| (18446744073709551615 decimal), and the minimum value can |
| |
| not be smaller than 0. The value of a CounterBasedGauge64 |
| has its maximum value whenever the information being modeled |
| is greater than or equal to its maximum value, and has its |
| minimum value whenever the information being modeled is |
| smaller than or equal to its minimum value. If the |
| information being modeled subsequently decreases below |
| (increases above) the maximum (minimum) value, the |
| CounterBasedGauge64 also decreases (increases). |
| |
| Note that this TC is not strictly supported in SMIv2, |
| because the 'always increasing' and 'counter wrap' semantics |
| associated with the Counter64 base type are not preserved. |
| It is possible that management applications which rely |
| solely upon the (Counter64) ASN.1 tag to determine object |
| semantics will mistakenly operate upon objects of this type |
| as they would for Counter64 objects. |
| |
| This textual convention represents a limited and short-term |
| solution, and may be deprecated as a long term solution is |
| defined and deployed to replace it." |
| SYNTAX Counter64 |
| |
| ZeroBasedCounter64 ::= TEXTUAL-CONVENTION |
| STATUS current |
| DESCRIPTION |
| "This TC describes an object which counts events with the |
| following semantics: objects of this type will be set to |
| zero(0) on creation and will thereafter count appropriate |
| events, wrapping back to zero(0) when the value 2^64 is |
| reached. |
| |
| Provided that an application discovers the new object within |
| the minimum time to wrap it can use the initial value as a |
| delta since it last polled the table of which this object is |
| part. It is important for a management station to be aware |
| of this minimum time and the actual time between polls, and |
| to discard data if the actual time is too long or there is |
| no defined minimum time. |
| |
| Typically this TC is used in tables where the INDEX space is |
| constantly changing and/or the TimeFilter mechanism is in |
| use. |
| |
| Note that this textual convention does not retain all the |
| semantics of the Counter64 base type. Specifically, a |
| Counter64 has an arbitrary initial value, but objects |
| defined with this TC are required to start at the value |
| |
| zero. This behavior is not likely to have any adverse |
| effects on management applications which are expecting |
| Counter64 semantics. |
| |
| This textual convention represents a limited and short-term |
| solution, and may be deprecated as a long term solution is |
| defined and deployed to replace it." |
| SYNTAX Counter64 |
| |
| END |
