Reference Guide

ping
Tests network connectivity to an IPv4 device.
Syntax
ping [vrf {management | vrf-name}] [-aAbBdDfhLnOqrRUvV] [-c count] [-
i interval] [-I interface] [-m mark] [-M pmtudisc_option] [-l preload]
[-p pattern] [-Q tos] [-s packetsize] [-S sndbuf] [-t ttl] [-T
timestamp_option] [-w deadline] [-W timeout] [hop1 ...] destination
Parameters
● vrf management — (Optional) Pings an IP address in the management VRF instance.
● vrf vrf-name — (Optional) Ping an IP address in the specified VRF instance.
● -a — (Optional) Audible ping.
● -A — (Optional) Adaptive ping. An inter-packet interval adapts to the round-trip time so that not
more than one (or more, if preload option is set) unanswered probe is present in the network. The
minimum interval is 200 msec for a non-super-user, which corresponds to flood mode on a network
with a low round-trip time.
● -b — (Optional) Pings a broadcast address.
● -B — (Optional) Does not allow ping to change the source address of probes. The source address is
bound to the address used when ping starts.
● -c count — (Optional) Stops the ping after sending the specified number of ECHO_REQUEST
packets until the timeout expires.
● -d — (Optional) Sets the SO_DEBUG option on the socket being used.
● -D — (Optional) Prints the timestamp before each line.
● -h — (Optional) View help for this command.
● -i interval — (Optional) Enter the interval in seconds to wait between sending each packet
(default 1 second).
● -i interval— (Optional) Enter the number of seconds to wait before sending the next packet (0 to
60, default 1).
● -I interface-address — (Optional) Enter the source interface address (with no spaces):
○ For a physical Ethernet interface, enter ethernetnode/slot/port; for example,
ethernet1/1/1.
○ For a VLAN interface, enter vlanvlan-id; for example, vlan10.
○ For a loopback interface, enter loopbackid; for example, loopback1.
○ For a port-channel interface, enter port-channelchannel-id; for example, port-
channel1.
● -l preload — (Optional) Enter the number of packets that ping sends before waiting for a reply.
Only a super-user may preload more than 3.
● -L — (Optional) Suppress the loopback of multicast packets for a multicast target address.
● -m mark — (Optional) Tags the packets sent to ping a remote device (use with policy routing).
● -M pmtudisc_option — (Optional) Enter the path MTU (PMTU) discovery strategy:
○ do prevents fragmentation, including local.
○ want performs PMTU discovery and fragments large packets locally.
○ dont does not set the Don’t Fragment (DF) flag.
● -p pattern — (Optional) Enter up to 16 pad bytes to fill out the packet you send to diagnose
data-related problems in the network (for example, -p ff fills the sent packet with all 1’s.
● -Q tos — (Optional) Enter the number of datagrams (up to 1500 bytes in decimal or hex) to set
quality of service (QoS)-related bits.
● -s packetsize — (Optional) Enter the number of data bytes to send (1 to 65468, default 56).
● -S sndbuf — (Optional) Set the sndbuf socket. By default, the sndbuf socket buffers one packet
maximum.
● -t ttl — (Optional) Enter the IP time-to-live (TTL) value in seconds.
● -T timestamp option — (Optional) Set special IP timestamp options. Valid values for timestamp
option — tsonly (only timestamps), tsandaddr (timestamps and addresses) or tsprespec
host1 [host2 [host3 [host4]]] (timestamp pre-specified hops).
● -v — (Optional) Verbose output.
● -V — (Optional) Display version and exit.
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