7.5 Summary

7.5 Summary

The ping program is the basic connectivity test between two systems running TCP/IP. It uses the ICMP echo request and echo reply messages and does not use a transport layer (TCP or UDP). The Ping server is normally part of the kernel's ICMP implementation.

We looked at the normal ping output for a LAN, WAN, and SLIP links (dialup and hardwired), and performed some serial line throughput calculations for a dedicated SLIP link. ping also let us examine and use the IP record route option. We used this IP option to see how default routes are often used, and will return to this topic in Chapter 9. We also looked at the IP timestamp option, but it is of limited practical use.



TCP.IP Illustrated, Volume 1. The Protocols
TCP/IP Illustrated, Vol. 1: The Protocols (Addison-Wesley Professional Computing Series)
ISBN: 0201633469
EAN: 2147483647
Year: 1993
Pages: 378

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