TCP/IP (Parallel Library) Configuration and Management Manual

SCF Reference for Parallel Library TCP/IP
HP NonStop TCP/IP (Parallel Library) Configuration and Management Manual—522271-006
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STATS MON Command for TCPMAN
Bad Router Words/ADDR
is the number of IRDP messages with an incorrect address length.
Errors
is the number of times an ICMP error was generated. Note that Redirect messages
are not included in the total. ICMP errors can be caused by any of the following
reasons: invalid IP options, problems in IP packet forwarding, or a UDP server
crash.
Good Routes Recorded
is the number of valid routes discovered by IRDP messages that have been
entered in the PTCPIP route table.
In Dest Unreachable
is the number of Destination Unreachable (type 3) messages received.
A Destination Unreachable message is sent to the Parallel Library TCP/IP
subsystem when another host or gateway determines that a destination host or
port is unreachable. This message can be caused by the following reasons: either
there is no route to the destination or the route to the destination has gone down; a
nonexistent address has been specified; the process listening on the port has gone
down; the destination host has crashed; or fragmentation is needed but the Don't
Fragment flag is set.
In Echo
is the number of Echo (type 8) messages received. The Echo message is sent
from the source address to the destination address. An Echo Reply message
containing the same data is expected from the destination address.
In Echo Reply
is the number of Echo Reply (type 0) messages received. This ICMP message is
the reply to the Echo (type 8) message. Essentially, an Echo Reply message is just
the original Echo message with the type changed from 8 to 0 and the destination
and source addresses reversed; the data returned in the Echo Reply message is
the same as that sent in the Echo message. The receipt of an Echo Reply
message informs the local host that the remote host is still alive. The data returned
also gives the local host a means of testing the integrity of the link.
In Info Reply
is the number of Information Reply (type 16) messages received. A host or
gateway sends this message—with the source and destination addresses fully
specified—in reply to an Information Request message. Note that the Information
Request/Reply facility, although supported, is rarely used.