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2-46 SPARC Enterprise M8000/M9000 Servers Service Manual • October 2012
2.9.5 ping Command
The ping command sends ICMP ECHO_REQUEST packets to network hosts. Depending
on how the ping command is configured, the output displayed can identify troublesome
network links or nodes. The destination host is specified in the variable hostname.
2.9.5.1 Options
TABLE 2-17 describes options for the ping command and how those options can help
troubleshooting.
bge0 froggy 255.255.255.255 08:00:20:73:70:44
bge0 d-mpk28-46-245 255.255.255.255 00:10:60:24:0e:00
bge0 224.0.0.0 240.0.0.0 SM 01:00:5e:00:00:00
TABLE 2-17 Options for ping
Option Description How It Can Help
hostname The probe packet is sent to hostname and returned. Verifies that a host is active on the
network.
-g hostname Forces the probe packet to route through a specified gateway. By identifying different routes to the
target host, those individual routes can
be tested for quality.
-i interface Designates which interface to send and receive the probe packet
through.
Enables a simple check of secondary
network interfaces.
-n Replaces host names with IP addresses. Used when an address is more
beneficial than a host name.
-s Pings continuously in one-second intervals. Ctrl-C aborts. Upon
abort, statistics are displayed.
Helps identify intermittent or
long-duration network events. By
piping ping output to a file, activity
overnight can later be viewed at once.
-svR Displays the route the probe packet followed in one second
intervals.
Indicates probe packet route and
number of hops. Comparing multiple
routes can identify bottlenecks.