The Count must be a minimum of 1 and a maximum of 9.
?– -s Count: Speci?¬?es that the Internet Timestamp option in the IP header is used to record
the time of arrival for the echo request message and corresponding echo reply message
for each hop. The Count must be a minimum of 1 and a maximum of 4.
?– -j HostList: Speci?¬?es that the echo request messages use the Loose Source Route
option in the IP header with the set of intermediate destinations speci?¬?ed in HostList.
With loose source routing, successive intermediate destinations can be separated by
Exploring the Packet Delivery Process 101
one or multiple routers. The maximum number of addresses or names in the host list is
nine. The HostList is a series of IP addresses (in dotted decimal notation) separated by
spaces.
?– -k HostList: Speci?¬?es that the echo request messages use the Strict Source Route
option in the IP header with the set of intermediate destinations speci?¬?ed in HostList.
With strict source routing, the next intermediate destination must be directly reachable
(it must be a neighbor on an interface of the router). The maximum number of
addresses or names in the host list is nine. The HostList is a series of IP addresses (in
dotted decimal notation) separated by spaces.
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