📄 rfc1596.txt
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service is provided in contiguous or non- contiguous time slot
increments.
Time slot (T1) - An octet within the 192-bit information field in
each T1 frame is defined as a time slot. Time slots are position
sensitive within the 192-bit information field. Fractional T1
service is provided in contiguous or non- contiguous time slot
increments.
UNI - User to Network Interface
N391 - Full status (status of all PVCs) polling counter
N392 - Error threshold
N393 - Monitored events count
T391 - Link integrity verification polling timer
T392 - Polling verification timer
nT3 - Status enquiry timer
nN3 - Maximum status enquiry counter
3.3. Apply MIB II to a Frame Relay Service
Use the System Group to apply to the SNMP proxy-agent, since the
proxy-agent may be monitoring many Frame Relay devices in one
network. System Group applies to only one system. This group is
not instantiated.
Frame Relay Service MIB Working Group [Page 7]
RFC 1596 Frame Relay Service MIB March 1994
sysDescr: ASCII string describing the SNMP proxy-agent.
Can be up to 255 characters long. This field is
generally used to indicate the network providers
identification and type of service offered.
sysObjectID: Unique OBJECT IDENTIFIER (OID) for the SNMP
proxy-agent.
sysUpTime: Clock in the SNMP proxy-agent; TimeTicks
in 1/100s of a second. Elapsed type since
the proxy-agent came on line.
sysContact: Contact for the SNMP proxy-agent.
ASCII string of up to 255 characters.
sysName: Domain name of the SNMP proxy-agent, for example,
acme.com
sysLocation: Location of the SNMP proxy-agent.
ASCII string of up to 255 characters.
sysServices: Services of the managed device. The value "2",
which implies that
the Frame Relay network is providing
a subnetwork level service, is recommended.
This specifies how the Interfaces Group defined in MIB II shall be
used for the management of Frame Relay based interfaces, and in
conjunction with the Frame Relay Service MIB module. This memo
assumes the interpretation of the evolution of the Interfaces group
to be in accordance with: "The interfaces table (ifTable) contains
information on the managed resource's interfaces. Each sub-layer
below the internetwork layer of a network interface is considered an
interface." Thus, the ifTable allows the following Frame Relay-based
interfaces to be represented as table entries:
- Frame Relay interfaces in the Frame Relay equipment (e.g.,
switches, routers or networks) with Frame Relay interfaces.
This level is concerned with generic frame counts and
not with individual virtual connections.
In accordance with the guidelines of ifTable, frame counts per
virtual connection are not covered by ifTable, and are considered
interface specific and covered in the Frame Relay Service MIB module.
In order to interrelate the ifEntries properly, the Interfaces Stack
Group shall be supported.
Some specific interpretations of ifTable for Frame Relay follow.
Frame Relay Service MIB Working Group [Page 8]
RFC 1596 Frame Relay Service MIB March 1994
Object Use for the generic Frame Relay layer
====== =========================================
ifIndex Each Frame Relay port is represented
by an ifEntry.
ifDescr Description of the Frame Relay interface.
ASCII string describing the UNI/NNI
logical port. Can be up to
255 characters long.
ifType The value allocated for Frame Relay
Service is equal to 44.
ifMtu Set to maximum frame size in octets for
this frame relay logical port.
ifSpeed Peak bandwidth in bits per second
available for use. This could be the
speed of the logical port and not
the access rate. Actual user information
transfer rate (i.e., access rate) of the
UNI or NNI logical port in bits per second
(this is not the clocking speed). For
example, it is 1,536,000 bits per
second for a DS1-based UNI/NNI logical
port and 1,984,000 bits per second for an
E1-based UNI/NNI logical port.
ifPhysAddress The primary address for this logical port
assigned by the Frame Relay interface
provider. An octet string of zero length
if no address is used for this logical
port.
ifAdminStatus The desired administrative status of the
frame relay logical port.
ifOperStatus The current operational status of the
Frame Relay UNI or NNI logical port.
ifLastChange The elapsed time since the last
re-initialization of the logical port.
The value of sysUpTime at the time the
logical port entered its current
operational state. If the current
state was entered prior to the last
re-initialization of the local
network management subsystem, then
Frame Relay Service MIB Working Group [Page 9]
RFC 1596 Frame Relay Service MIB March 1994
this object contains a zero value.
ifInOctets The number of received octets.
This counter only counts octets from the
beginning of the frame relay header field
to the end of user data.
ifInUcastPkts The number of received unerrored,
unicast frames.
ifInDiscards The number of received frames discarded.
Possible reasons are as follows:
policing, congestion.
ifInErrors The number of received frames that are
discarded, because of an error.
Possible errors can be the following: the
frame relay frames were too long or were
too short, the frames had an invalid or
unrecognized DLCI values, or incorrect
header values.
ifInUnknownProtos The number of packets discarded because
of an unknown or unsupported protocol.
For Frame Relay Service interfaces, this
counter will always be zero.
ifOutOctets The number of transmitted octets.
This counter only counts octets from the
beginning of the frame relay header field
to the end of user data.
ifOutUcastpkts The number of frames sent.
ifOutDiscards The number of frames discarded in the
egress direction. Possible
reasons are as follows: policing,
congestion.
ifOutErrors The number of frames discarded in the
egress direction, because of errors.
Possible reason is transmit underruns.
ifName This variable is not applicable for
Frame Relay Service interfaces,
therefore, this variable contains a
zero-length string.
Frame Relay Service MIB Working Group [Page 10]
RFC 1596 Frame Relay Service MIB March 1994
ifInMulticastPkts The number of received unerrored,
multicast frames.
ifInBroadcastPkts This variable is not applicable for
Frame Relay Service interfaces,
therefore, this counter is always zero.
ifOutMulticastPkts The number of sent unerrored,
multicast frames.
ifOutBroadcastPkts This variable is not applicable for
Frame Relay Service interfaces,
therefore, this counter is always zero.
ifHCInOctets Only used for DS3-based (and greater)
Frame Relay logical ports.
The number of received octets.
This counter only counts octets from the
beginning of the frame relay header field
to the end of user data.
ifHCOutOctets Only used for DS3-based (and greater)
Frame Relay logical ports.
The number of transmitted octets.
This counter only counts octets from the
beginning of the frame relay header field
to the end of user data.
ifLinkUpDownTrapEnble The value of this object is
implementation specific for Frame
Relay logical ports.
ifHighSpeed Set to the user data rate of the frame
relay logical port in millions of
bits per second. If the user data rate
is less than 1 Mbps, then this value is
zero.
ifPromiscuousMode Set to false(2).
ifConnectorPresent Set to false(2).
Frame Relay Network Service interfaces support the Interface Stack
Group. Frame Relay Network Service interfaces do not support any
other groups or objects in the Interfaces group of MIB II. Also,
supporting the SNMP Group of MIB II is an implementation choice.
Frame Relay Service MIB Working Group [Page 11]
RFC 1596 Frame Relay Service MIB March 1994
4. Object Definitions
FRNETSERV-MIB DEFINITIONS ::= BEGIN
IMPORTS
MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE,
Counter32, Integer32,
TimeTicks FROM SNMPv2-SMI
DisplayString, PhysAddress,
TimeStamp, RowStatus FROM SNMPv2-TC
MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF
ifIndex, transmission FROM RFC-1213;
frnetservMIB MODULE-IDENTITY
LAST-UPDATED "9311161200Z"
ORGANIZATION "IETF Frame Relay Network MIB Working Group"
CONTACT-INFO
" Tracy A. Brown
Bellcore
331 Newman Springs Rd.
Red Bank, NJ 07701 USA
Tel: 1-908-758-2107
Fax: 1-908-758-4177
E-mail: tacox@mail.bellcore.com."
DESCRIPTION
"The MIB module to describe generic objects for
Frame Relay Network Service."
::= { transmission 44 }
IfIndex ::= TEXTUAL-CONVENTION
STATUS current
DESCRIPTION
"The value of this object identifies the
interface for which this entry contains
management information. The value of this
object for a particular interface has the same
value as the ifIndex object, defined in RFC
1213, for the same interface."
SYNTAX Integer32
frnetservObjects OBJECT IDENTIFIER ::= { frnetservMIB 1 }
frnetservTraps OBJECT IDENTIFIER ::= { frnetservMIB 2 }
-- The Frame Relay Service Logical Port Group
-- the Frame Relay Logical Port Group
Frame Relay Service MIB Working Group [Page 12]
RFC 1596 Frame Relay Service MIB March 1994
-- This table is an interface specific addendum
-- to the generic ifTable from MIB-II.
frLportTable OBJECT-TYPE
SYNTAX SEQUENCE OF FrLportEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The Frame Relay Logical Port Information table."
::= { frnetservObjects 1 }
frLportEntry OBJECT-TYPE
SYNTAX FrLportEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"An entry in the Frame Relay Logical Port
Information table."
INDEX { ifIndex }
::= { frLportTable 1 }
FrLportEntry ::=
SEQUENCE {
frLportNumPlan
INTEGER,
frLportContact
DisplayString,
frLportLocation
DisplayString,
frLportType
INTEGER,
frLportAddrDLCILen
INTEGER,
frLportVCSigProtocol
INTEGER,
frLportVCSigPointer
OBJECT IDENTIFIER
}
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