Paradyne CSU, DSU, 9126-II, 9128-II manual Physical Sublayer, Pri, Mib, Strings

B. SNMP MIBs and Traps, and RMON Alarm Defaults

Table B-6. linkUp and linkDown Variable-Bindings (1 of 2)

Interface	Variable-Bindings	Possible Cause
Physical Sublayer		T
T1 Network,	ifIndex (RFC 1573)	linkDown – One or more alarm
DSX-1,	ifAdminStatus (RFC	conditions are active on the
PRI		interface.
	1573)
		Alarm conditions include:
	TifOperStatus (RFC 1573)
(Supported by the		– Loss of Signal (LOS) or
media-specific DS1	devLastTrapString		far-end loss of signal
MIB.)	(devHealthAndStatus.-	– Out of Frame (OOF)
	mib)	–	Alarm Indication Signal
			(AIS)
		– Excessive Error Rate (EER)
		–	Yellow Alarm
		Strings:
		‘$ifString down.’ No alarms
		exist. (e.g., ‘Network T1 down
		due to yellow alarm.’ )
		‘$ifString administratively
		shutdown.’ (Due to an
		intentional shutdown.)
		linkUp – No alarms on the
		interface.
		String:
		‘$ifString up.’
Synchronous Data	ifIndex (RFC 1573)	TlinkDown – One or more alarm
Port	ifAdminStatus	conditions are active on the
		port.
	(RFC 1573)
		Alarm conditions include:
media(Supported-specificby the	TifOperStatus (RFC 1573)
		–	DTR off 1
RS232-like MIB.)	devLastTrapString	–	RTS off 2
	(devHealthAndStatus.-	–	‘ ’ – Not DTR or RTS, but
	mib)
			link is down.
		String:
		‘$ifString $alarmString down.’
		(e.g., ‘Sync Data Port S01P1
		DTR and RTS down.’)
		‘$ifString administratively
		shutdown.’ (Due to an
		Tintentional shutdown.)
		linkUp – No alarms on the port.
		String:
		‘$ifString up.’

1The DTR alarm condition will only generate a linkUp/linkDown trap if the DTE supports the DTR lead state.

2The RTS alarm condition will only generate a linkUp/linkDown trap if the DTE supports the RTS lead state.

3If the LMI Protocol is not configured, a linkUp/linkDown trap is based solely upon whether the interface is enabled or disabled.

9128-A2-GB20-80 September 2002 B-11