📄 rfc2677.txt
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--****************************************************************
-- NHRP General (Client and Server) Objects
--****************************************************************
nhrpGeneralObjects OBJECT IDENTIFIER ::= { nhrpObjects 1 }
--
-- The following scalar is to be used to
-- provided indices for the
-- nhrpClientTable, and/or the nhrpServerTable.
--
nhrpNextIndex OBJECT-TYPE
SYNTAX Unsigned32
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"This scalar is used for creating rows in the
nhrpClientTable and the nhrpServerTable.
The value of this variable is a currently unused value
for nhrpClientIndex and nhrpServerIndex.
Greene, et al. Standards Track [Page 7]
RFC 2677 NHRP MIB August 1999
The value returned when reading this variable must be
unique for the NHC's and NHS's indices associated with
this row. Subsequent attempts to read this variable
must return different values.
NOTE: this object exists in the General Group because
it is to be used in establishing rows in the
nhrpClientTable and the nhrpServerTable. In other words,
the value retrieved from this object could become the
value of nhrpClientIndex and nhprServerIndex.
In the situation of an agent re-initialization the value
of this object must be saved in non-volatile storage.
This variable will return the special value 0 if no new
rows can be created."
::= { nhrpGeneralObjects 1 }
--
-- The NHRP Cache Table
--
nhrpCacheTable OBJECT-TYPE
SYNTAX SEQUENCE OF NhrpCacheEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains mappings between internetwork layer
addresses and NBMA subnetwork layer addresses."
::= { nhrpGeneralObjects 2 }
nhrpCacheEntry OBJECT-TYPE
SYNTAX NhrpCacheEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A cached mapping between an internetwork layer address
and an NBMA address. Entries can be created by the
network administrator using the nhrpCacheRowStatus
column, or they may be added dynamically based on
protocol operation (including NHRP, SCSP, and others,
such as ATMARP).
When created based by NHRP protocol operations
this entry is largely based on contents contained in
the Client Information Entry (CIE).
Greene, et al. Standards Track [Page 8]
RFC 2677 NHRP MIB August 1999
Zero or more Client Information Entries (CIEs) may be
included in the NHRP Packet. For a complete description
of the CIE, refer to Section 5.2.0.1 of
RFC 2332 [17]."
INDEX {
nhrpCacheInternetworkAddrType,
nhrpCacheInternetworkAddr,
ifIndex,
nhrpCacheIndex
}
::= { nhrpCacheTable 1 }
NhrpCacheEntry ::= SEQUENCE {
nhrpCacheInternetworkAddrType AddressFamilyNumbers,
nhrpCacheInternetworkAddr NhrpGenAddr,
nhrpCacheIndex Unsigned32,
nhrpCachePrefixLength Integer32,
nhrpCacheNextHopInternetworkAddr NhrpGenAddr,
nhrpCacheNbmaAddrType AddressFamilyNumbers,
nhrpCacheNbmaAddr NhrpGenAddr,
nhrpCacheNbmaSubaddr NhrpGenAddr,
nhrpCacheType INTEGER,
nhrpCacheState INTEGER,
nhrpCacheHoldingTimeValid TruthValue,
nhrpCacheHoldingTime Unsigned32,
nhrpCacheNegotiatedMtu Integer32,
nhrpCachePreference Integer32,
nhrpCacheStorageType StorageType,
nhrpCacheRowStatus RowStatus
}
nhrpCacheInternetworkAddrType OBJECT-TYPE
SYNTAX AddressFamilyNumbers
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The internetwork layer address type of this Next Hop
Resolution Cache entry. The value of this object indicates
how to interpret the values of nhrpCacheInternetworkAddr
and nhrpCacheNextHopInternetworkAddr."
::= { nhrpCacheEntry 1 }
nhrpCacheInternetworkAddr OBJECT-TYPE
SYNTAX NhrpGenAddr
MAX-ACCESS not-accessible
STATUS current
Greene, et al. Standards Track [Page 9]
RFC 2677 NHRP MIB August 1999
DESCRIPTION
"The value of the internetwork address of the
destination."
::= { nhrpCacheEntry 2 }
nhrpCacheIndex OBJECT-TYPE
SYNTAX Unsigned32 (1..4294967295)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An identifier for this entry that has local
significance within the scope of the General
Group. This identifier is used here to
uniquely identify this row, and also used
in the 'nhrpPurgeTable' for the value of
the 'nhrpPurgeCacheIdentifier'."
::= { nhrpCacheEntry 3 }
nhrpCachePrefixLength OBJECT-TYPE
SYNTAX Integer32 (0..255)
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The number of bits that define the internetwork layer
prefix associated with the nhrpCacheInternetworkAddr."
::= { nhrpCacheEntry 4 }
nhrpCacheNextHopInternetworkAddr OBJECT-TYPE
SYNTAX NhrpGenAddr
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of the internetwork address of the next hop."
::= { nhrpCacheEntry 5 }
nhrpCacheNbmaAddrType OBJECT-TYPE
SYNTAX AddressFamilyNumbers
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The NBMA address type. The value of this
object indicates how to interpret
the values of nhrpCacheNbmaAddr and
nhrpCacheNbmaSubaddr."
::= { nhrpCacheEntry 6 }
Greene, et al. Standards Track [Page 10]
RFC 2677 NHRP MIB August 1999
nhrpCacheNbmaAddr OBJECT-TYPE
SYNTAX NhrpGenAddr
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of the NBMA subnetwork address of the next
hop."
::= { nhrpCacheEntry 7 }
nhrpCacheNbmaSubaddr OBJECT-TYPE
SYNTAX NhrpGenAddr
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"The value of the NBMA subaddress of the next hop. If
there is no subaddress concept for the NBMA address
family, this value will be a zero-length OCTET STRING."
::= { nhrpCacheEntry 8 }
nhrpCacheType OBJECT-TYPE
SYNTAX INTEGER {
other(1),
register(2),
resolveAuthoritative(3),
resoveNonauthoritative(4),
transit(5),
administrativelyAdded(6),
atmarp(7),
scsp(8)
}
MAX-ACCESS read-create
STATUS current
DESCRIPTION
"An indication of how this cache entry
was created. The values are:
'other(1)' The entry was added by some
other means.
'register(2)' In a server, added based on a
client registration.
'resolveAuthoritative(3)' In a client, added based on
receiving an Authoritative
NHRP Resolution Reply.
Greene, et al. Standards Track [Page 11]
RFC 2677 NHRP MIB August 1999
'resolveNonauthoritative(4)' In a client, added based on
receiving a Nonauthoritative
NHRP Resolution Reply.
'transit(5)' In a transit server, added by
examining a forwarded NHRP
packet.
'administrativelyAdded(6)' In a client or server,
manually added by the
administrator. The
StorageType of this entry is
reflected in
'nhrpCacheStorageType'.
'atmarp(7)' The entry was added due to an
ATMARP.
'scsp(8)' The entry was added due to
SCSP.
When the entry is under creation using the
nhrpCacheRowStatus column, the only value that can be
specified by the administrator is 'administrativelyAdded'.
Attempting to set any other value will cause an
'inconsistentValue' error.
The value cannot be modified once the entry is active."
::= { nhrpCacheEntry 9 }
nhrpCacheState OBJECT-TYPE
SYNTAX INTEGER {
incomplete(1),
ackReply(2),
nakReply(3)
}
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"An indication of the state of this entry. The values are:
'incomplete(1)' The client has sent a NHRP Resolution
Request but has not yet received the
NHRP Resolution Reply.
Greene, et al. Standards Track [Page 12]
RFC 2677 NHRP MIB August 1999
'ackReply(2)' For a client or server, this is a
cached valid mapping.
'nakReply(3)' For a client or server, this is a
cached NAK mapping."
::= { nhrpCacheEntry 10 }
nhrpCacheHoldingTimeValid OBJECT-TYPE
SYNTAX TruthValue
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"True(1) is returned if the value of
'nhrpCacheType' is not
'administrativelyAdded'. Since the
value of 'nhrpCacheType' was not
configured by a user, the value of
'nhrpCacheHoldingTime' is
considered valid. In other words, the value of
'nhrpCacheHoldingTime' represents
the Holding Time for the cache Entry.
If 'nhrpCacheType has been configured by a
user, (i.e. the value of 'nhrpCacheType' is
'administrativelyAdded') then false(2) will be returned.
This indicates that the value of
'nhrpCacheHoldingTime' is undefined because this row
could possibly be backed up in nonvolatile storage."
::= { nhrpCacheEntry 11 }
nhrpCacheHoldingTime OBJECT-TYPE
SYNTAX Unsigned32(0..65535)
UNITS "seconds"
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"If the value of 'nhrpCacheHoldingTimeValid is
true(1) then this object represents the number
of seconds that the cache entry will remain in this
table. When this value reaches 0 (zero) the row should
be deleted.
If the value of 'nhrpCacheHoldingTimeValid is
false(2) then this object is undefined."
::= { nhrpCacheEntry 12 }
Greene, et al. Standards Track [Page 13]
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