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C. Traps and MIBs
C-12
August 2002 4200-A2-GB20-00
MIB II (RFC 2863) Extension to the Interface Table
This extension contains additional objects for the Interface table. Only the following
objects are supported:
ifLinkUpDownTrapEnable(14)
−
Read/Write. SNMP traps must be enabled on
the unit for changes to this object to take effect.
ifConnectorPresent(17)
−
Read only.
MIB II (RFC 2863) Interface Stack Group
For GranDSLAM 4200, the interface stack group is used to show the relationship
between multiple logical and physical interfaces. The ifStackTable entries for
GranDSLAM 4200 are shown in Table C-5, GranDSLAM 4200 IfStackTable
Entries.
ifStackHigherLayer Object (ifStackEntry1) – Provides the ifIndex
corresponding to the higher sublayer running on top of the interface specified
in the ifStackLowerLayer object. The higher interface number ranges from
dsl1
−
dsl24, cel1, and wan1. The lower interface number is 0.
ifStackLowerLayer Object (ifStackEntry2) – Provides the ifIndex corresponding
to the lower sublayer running below the interface specified in the
ifStackHigherLayer object. The higher interface number is 0. The lower
interface number ranges from atm1
−
atm24.
Table C-4. ifIndex Assignments
Interface ifType (IANAifType) IfIndex ifDescr
T1 ds1(18) 00cc00190
x
(
x
=1−8) “T1 interface in unit ‘cc’”
E1 e1(19) 00cc00190
x
(
x
=1−8) “E1 interface in unit ‘cc’”
ATM Link atm(37) 00cc00390
x
“ATM Link in unit ‘cc’”
AAL5 aal5(49) 00cc004901 “ATM-AAL5 interface in unit ‘cc’”
ReachDSL port adsl(94) 00cc001
yyy
(yyy=1−48) “ReachDSL port ‘yy’ in unit ‘cc’”
DSL channels
fast(94)
interleave(126)
fast channels: 00cc002
yyy
(yyy=1−48)
interleave channels:
00cc002
yyy
(yyy=49−96)
“ReachDSL port ‘yy’ in unit ‘cc’”
ATM atm(37) 00cc003
yyy
(yyy=1−96) “ATM Port interface ‘yy’ in unit ‘cc’”
Table C-5. GranDSLAM 4200 IfStackTable Entries
GranDSLAM 4200
Higher Interface Number
GranDSLAM 4200
Mid-Interface Number (Fast Channel)
GranDSLAM 4200
Lower Interface Number
atm1 − atm24 adsl1:2 − adsl24:2 adsl1 − adsl24
AAL5 − cel1
0 − wan1