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C. Traps and MIBs
4200-A2-GB20-00 August 2002
C-9
Table C-3. Interfaces Group Objects (1 of 3)
Object Description Setting/Contents
ifNumber
(interfaces1)
Supported as specified in the
Evolution MIB.
Specifies the number of interfaces for this unit in the
ifTable.
ifIndex
(ifEntry1)
Provides the index into the
interface table (ifTable) and to
other MIB tables. It is
recommended that values be
assigned contiguously starting
with 1. The value for each
interface sublayer must remain
constant between NMS
reinitializations. See See
Table C-4, ifIndex Assignments.
Interface List:
CONx*: Console port, Layer 1, maximum 1 per
unit, exists in SU, AU, and BU.
ETHx*: Ethernet management port, Layer 1,
maximum 1 per unit, exists in SU and AU.
T1x*: T1 interface, Layer 1, maximum 8 per unit,
exists in SU, AU, and BU.
E1x*: E1 interface, Layer 1, maximum 8 per unit,
exists in SU, AU, and BU.
ATMx*: ATM uplink, Layer 3, maximum 96 per
unit, exists in SU, AU, and BU.
AA5L_x*: ATM AAL5, Layer 4, maximum 1 per
unit, exists in SU and AU.
ReachDSLx*: ReachDSL port, Layer 1,
maximum 48 per unit, exists in SU, AU, and BU.
DSLChan_x*: DSL channels, Layer 2, maximum
96 per unit, exists in SU, AU, and BU.
* x = Interface/port number within the same chassis.
ifDescr
(ifEntry2)
Supplies text for each interface: See Table C-4, ifIndex Assignments.
ifType
(ifEntry3)
Identifies the interface type based
on the physical/link protocol(s).
See Table C-4, ifIndex Assignments.
ifMtu
(ifEntry4)
Identifies the largest datagram
that can be sent or received on an
interface.
DSL1−24 interface: 53
ATM1−24 interface: 53
ATM90 interface: 53
ATM91 interface: 53
AAL5 interface: 4128 (set to largest PDU size that
can be processed by the AA5 entity)
RFC1483 interface: 1500
ifSpeed
(ifEntry5)
Provides the interface’s current
bandwidth in bits per second
(bps).
DSL1−24 interface: 32−2176 kbps
ATM1−24 interface: 32−2176 kbps
ATM90 interface: 0
ATM91 interface: 0
BUS1: 512k
RFC1483 interface: 0
ifPhysAddress
(ifEntry6)
Identifies the physical address for
the interface.
For GranDSLAM 4200 ATM interfaces, this object
should contain an octet string of zero length.