Management Features Overview
24 1553-CNH 160 0787 Uen PA2 2005-09-23
5.1 Ethernet Access Node Alarms
Alarms (SNMP traps, notifications or informs) from the EAN are sent to the
IP address of the Trap Receiver. The traps are always sent with the IP ad-
dress of the ECN (which is the only address known in the network) as the
sender address. However, the traps contain the identification of the em-
bedded node as a parameter, thus enabling easy and fast identification of
the embedded node that originating the alarm. The identification of the
nodes complies with the identification concept shown in
Figure 15 on page
34. In Figure 9 on page 24 an alarm received from the EAN is shown. The
alarm states the EAN is based on the ECN with the IP address
172.30.59.12. The alarm also states that the element on port 1 is unreach-
able.
Figure 9 Alarms from the EAN
5.2 Startup Failure
If for some reason (for example a corrupt application) the ECN fails to start,
it will switch to a Fallback state. The Fallback state is an emergency appli-
cation, which contains a limited CLI that enables diagnostics and reloading
of software. When the ECN is in Fallback state, only the CLI can be used
as management interface. The normal PEM control (which is SNMP based)
is not possible. Only the Console connector on the ECN or Telnet can be
used. (whether Telnet can be used depends on the reason for the Fallback
state).
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