
SNMP MIBs and Traps, and RMON Alarm Defaults
B-10
9820-A2-GB20-20
June 2000
Table B-6.
linkUp and linkDown Variable-Bindings (2 of 2)
Interface
Possible Cause
Variable-Bindings
Physical Sublayer, continued
Ethernet Port
H
ifIndex (RFC 1573)
H
ifAdminStatus
(RFC 1573)
H
ifOperStatus (RFC 1573)
H
devLastTrapString
(devHealthAndStatus.-
mib)
H
linkDown – Communications
are not possible on the port.
String:
‘Ethernet $alarmString down.’
H
linkUp – Communications are
now possible on the port.
String:
‘Ethernet up.’
Logical Link Sublayer
Frame Relay
(Supported by the
media-specific Frame
Relay Services MIB.)
H
ifIndex (RFC 1573)
H
ifAdminStatus
(RFC 1573)
H
ifOperStatus (RFC 1573)
H
devLastTrapString
(devHealthAndStatus.-
mib)
H
linkDown – LMI is down for
the LMI Protocol configured,
or Frame Relay link is
disabled.
If the LMI Protocol is not
configured, a linkUp/ linkDown
trap is based solely upon
whether the interface is
enabled or disabled.
Strings:
‘$ifString down.’ No alarms
exist on the link due to LMI.
‘$ifString LMI down.’ No
alarms exist on the link
because LMI is down.
‘$ifString administratively
shutdown.’ (Due to an
intentional shutdown.)
H
linkUp – LMI is up or Frame
Relay link is enabled.
String:
‘$ifString up.’
Summary of Contents for 9820
Page 10: ...Contents viii 9820 A2 GB20 20 June 2000...
Page 98: ...Configuration Options 4 62 9820 A2 GB20 20 June 2000 This page intentionally left blank...
Page 216: ...Menu Hierarchy A 4 9820 A2 GB20 20 June 2000 This page intentionally left blank...
Page 246: ...SNMP MIBs and Traps and RMON Alarm Defaults B 30 9820 A2 GB20 20 June 2000...
Page 266: ...Technical Specifications D 4 9820 A2 GB20 20 June 2000...
Page 270: ...Equipment List E 4 9820 A2 GB20 20 June 2000 This page intentionally left blank...