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+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