Using the ping Command
To see all the different protocols that you can use with the ping program,
type ping ?:
Router#ping ?
WORD Ping destination address or hostname
apollo Apollo echo
appletalk Appletalk echo
clns CLNS echo
decnet DECnet echo
ip IP echo
ipx Novell/IPX echo
srb srb echo
tag Tag encapsulated IP echo
vines Vines echo
xns XNS echo
<cr>
The ping output displays the minimum, average, and maximum times it takes for a ping packet to find a specified system and return. Here’s an example:
Router#ping RouterA
Translating "RouterA"...domain server (192.168.0.1)[OK]
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms
Router#
You can see that the DNS server was used to resolve the name, and the device was pinged in 32ms (milliseconds).
Using the traceroute Command
Traceroute (the traceroute command, or trace for short) shows the path
a packet takes to get to a remote device. To see the protocols that you
can use with the traceroute command, type traceroute ?:
Router#traceroute ?
WORD Trace route to destination address or hostname
appletalk AppleTalk Trace
clns ISO CLNS Trace
ip IP Trace
ipx IPX Trace
oldvines Vines Trace (Cisco)
vines Vines Trace (Banyan)
<cr>
The trace command shows the hop or hops that a packet traverses on its way to a remote device. Here’s an example:
Router#trace RouterA
Type escape sequence to abort.
Tracing the route to RouterA.example.com (172.16.10.5)
1 RouterA.example.com (172.16.10.5) 16 msec * 16 msec
Router#
You can see that the packet went through only one hop to find the destination.
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