ICMP Destination Unreachable Message Received
This count keeps track of the total number of ICMP destination
unreachable messages received.
ICMP Parameter Problem Message Received
This count keeps track of the total number of ICMP parameter
problem messages received.
ICMP Echo Request Message Received
This count keeps track of the total number of ICMP echo request
messages received. Since reception of numerous ICMP echo request
messages can be a possible indication of a security issue, this count
may be alarmed. The alarm level can be set to “no alarm” or “minor
alarm”. The default is “no alarm”.
ICMP TTL Exceeded Message Received
This count keeps track of the total number of ICMP TTL exceeded
messages received.
ICMP Unavailable Seconds
This count is detected at the ICMP layer. The ICMP layer is
considered to be unavailable whenever the Ethernet layer is
automatically inhibited for 10 consecutive seconds and continues to be
considered unavailable until it has been automatically uninhibited for
10 consecutive seconds.
SCTP Layer Performance
Monitoring Parameters
Overview
The following parameters are used to monitor SCTP layer
performance:
• Invalid SCTP Header Received
• SCTP Chunk Errors Received
• SCTP Unavailable Seconds
Invalid SCTP Header Received
This count keeps track of the total number of incoming SCTP packets
discarded due to the following SCTP common header error types:
• Unknown source port
• Unknown destination port
Performance Monitoring on SIP PH
Maintenance Considerations
....................................................................................................................................................................................................................................
235-200-118
Issue 3.02B, March 2007
Lucent Technologies
7-95
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