28 portname – Atlantis Land I-Storm A02-RA(Atmos)_ME01 User Manual

Page 88

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10.27.2Description

Sends an ICMP Echo message to the specified IP address.
<ttl> (default 30) is the TTL (time-to-live) to use. A crude traceroute functionality

can be obtained by repeating the ping. command with increasing TTL values,
starting with 1.

<size> (default 56) is the data size of the Echo message. This does not include the

IP header (20 bytes) and the ICMP header (8 bytes).

ATMOS TCP/IP waits 10 seconds for a reply to the message; if none arrives, it
reports the lack of a reply (and returns the TELL message, or redisplays the prompt).
Any reply arriving after this time-out will be reported as a background message.
(Whereas a reply arriving before the time-out expires is, of course, reported in the
foreground.)
A reply is an ICMP Echo Reply message, or an ICMP error message reporting
destination unreachable, time exceeded, or (as should never happen) a parameter
problem. ICMP redirect and source quench messages are reported, but ATMOS
TCP/IP continues to wait for a final reply or time-out.

10.27.3Example

mymachine>

ip ping 192.168.4.13 1

ip: ping - 192.168.1.9 reports time-to-live exceeded

mymachine>

ip ping 192.168.4.13 2

ip: ping - reply received from 192.168.4.13

mymachine>

ip ping 192.168.77.77

ip: ping - no reply received

10.28 portname

10.28.1Syntax

portname add <name> <number>[/<protocol>]

portname flush

portname list

portname read <file>

portname help [all|<cmd>]

10.28.2Description

Sets up a mapping between a UDP or TCP port and a symbolic name; deletes all
such mappings; lists the mappings; reads the mappings from a file; or displays help
on the “portname” command.
The symbolic names can be used as values of the attributes LPORT and RPORT
(described in the ATMOS TCP/IP Functional Specification, DO-007285-PS)

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