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HD Link Installation & Operation Manual
5 – Web Browser Interface Configuration & Operation
Version 2, April 2010
5-46
Harris Corporation
Intraplex Products
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Datagrams fragmented
: Total number of datagrams received by the HD Link IP protocol stack.
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Datagrams failing reassembly
: Total number of attempted datagram reassemblies by the HD
Link system.
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Datagrams failing fragmentation
: Total number of datagram fragmentations that failed.
5.3.9.6 ICMP Statistics
You can view the ICMP receive and send message statistics on this page (Figure 5-38):
Figure 5-38. Performance | ICMP Statistics Page
Total messages
: Total number of Internet Control Messages received or transmitted by the HD Link
system.
Destination unreachable
: Total number of ICMP Destination Unreachable messages that have been
received or sent by the HD Link system.
Redirect
: Total number of redirect messages received or sent by the HD Link system. A redirect
message is sent to the originating computer when a better route is discovered for a datagram sent by
that computer.
Source quench
: Total number of requests received or sent by the HD Link system to cut back the
rate at which it is sending traffic to the Internet destination.
Echo request
: Total number of ICMP Echo request messages received or sent by the HD Link system.
An echo request causes the receiving computer to send an echo reply message back to the originating
computer.
Echo reply
: Total number of echo replies received or sent by the HD Link system. A computer sends
an echo reply in response to receiving an echo request message.
Time exceeded
: Total number of time-to-live (TTL) exceeded messages either received or sent by
the HD Link system. A time-to-live exceeded message is sent to the originating computer when a
datagram is discarded because the number of routers it has passed through exceeds its time-to-live
value.