Nortel Networks OPTera Metro 3500 - Manual (Page 116)

2-78 Operation, administration, and maintenance (OAM) features
OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
Table 2-11
Ingress LAN port alarms
Alarm Description Severity
Rx Loss of signal This alarm is raised against the LAN port
on a 2xGigE/FC-P2P circuit pack when
the circuit pack cannot detect an input
signal. Critical, service affecting (C,SA)
Rx Loss of data Sync
(See
Note 1 )
This alarm is raised against the LAN port
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
Critical, service affecting (C,SA)
Link Down This alarm is raised against the LAN
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.
Critical, service affecting (C,SA)
Rx Signal Degrade This alarm is raised against the LAN port
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.
Minor, service affecting (mn,SA)