Nortel Networks NTRN10AN, 3500 manual Ingress LAN port alarms Alarm Description Severity

2-78Operation, administration, and maintenance (OAM) features

Table 2-11

Ingress LAN port alarms

Alarm	Description	Severity
Rx Loss of signal	This alarm is raised against the LAN port	Critical, service affecting (C,SA)
	on a 2xGigE/FC-P2P circuit pack when
	the circuit pack cannot detect an input
	signal.
Rx Loss of data Sync	This alarm is raised against the LAN port	Critical, service affecting (C,SA)
(See Note 1)	of the 2xGigE/FC-P2P circuit pack when
	one of the following conditions occurs:
	• the circuit pack cannot establish bit
	synchronization or transmission word
	synchronization
	• the Small Form Factor Pluggable (SFP)
	optical transceiver module is the wrong
	type (SX or LX)
	• the client service provisioned on the
	subtending transmit equipment does
	not match the client service provisioned
	on the 2xGigE/FC-P2P circuit pack
Link Down	This alarm is raised against the LAN	Critical, service affecting (C,SA)
	Ethernet port when one of the following
	conditions occurs:
	• auto-negotiation between the
	2xGigE/FC-P2P circuit pack and the
	local link partner does not complete
	successfully
	• auto-negotiation is enabled on the
	2xGigE/FC-P2P circuit pack but is
	disabled on the local link partner
	• the administrative state of the LAN port
	on a 2xGigE/FC-P2P circuit pack is up
	but the operating state of the port is
	down
	This alarm is raised against the LAN
	Fibre Channel port when the Fibre
	Channel link state is not active.
Rx Signal Degrade	This alarm is raised against the LAN port	Minor, service affecting (mn,SA)
	when the following occurs:
	• For Ethernet facilities, this alarm is
	raised when at least 1 percent of the
	received frames are errored per
	second, for 3 consecutive seconds.
	• For Fibre Channel facilities, this alarm
	is raised when at least one symbol or
	disparity error occurs per second, for 3
	consecutive seconds.

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004