Nortel Networks NTRN10AN, 3500 manual 82Operation, administration, and maintenance OAM features

2-82Operation, administration, and maintenance (OAM) features

Table 2-12 (continued)

Egress WAN port and service alarms

Alarm	Description	Severity
Link Down	This alarm is raised against the WAN port	Critical, service affecting (C, SA)
(See Note)	when the administrative state of the WAN
	port on a 2xGigE/FC-P2P circuit pack is
	up but the operating state of the port is
	down.
Rx Signal Degrade	This alarm is raised against the WAN port	Minor, service affecting (mn,SA)
	when the following occurs:
	• For GFP-F, this alarm is raised when at
	least 1 percent of the received frames
	are errored per second, for 3
	consecutive seconds.
	• For GFP-T, this alarm is raised when at
	least 1 percent of the received
	superblocks are errored per second, for
	3 consecutive seconds.
Rx Excessive Error ratio	This alarm is raised against the WAN port	Major, service affecting (Mj,SA)
	when one of the following conditions
	occurs:
	• For GFP-F, this alarm is raised when at
	least 20 percent of the received frames
	are errored per second, for 3
	consecutive seconds.
	• For GFP-T, this alarm is raised when at
	least 20 percent of the received
	superblocks are errored per second, for
	3 consecutive seconds.

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