Using this
command line switch lets you check for Path Maximum Transmission Unit (PMTU) problems
308 CHAPTER 11 WORKING WITH TCP/IP
between machines. You can learn more about PMTU at http://www.microsoft.com/technet/
community/columns/cableguy/cg0704.mspx.
-i TTL Defines the Time-to-Live field of the message. A larger TTL value can let the packet
travel a longer distance. However, a larger value also increases the time you must wait to discover
an error on the network. The default value is 128. You may set this value to a maximum
of 255.
-v TOS Defines the type of service (level of quality) the message should receive. The default
value is 0. You may use a value up to 255. You can learn more about the TOS field of the message
in the standards document at http://www.ietf.org/rfc/rfc0791.txt in the ???Type of Service???
section and the standards document section at http://www.freesoft.org/CIE/RFC/1812/
111.htm.
-r count Specifies that the system use the Record Route option in the IP header to record the
path the message will follow from one machine to another. This option lets you record the path
and display it as part of the output. The count argument defines how many hops the system
records.
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