Users Guide

64 bytes from 20.1.1.1: icmp_seq=1 ttl=64 time=0.079 ms
64 bytes from 20.1.1.1: icmp_seq=2 ttl=64 time=0.081 ms
64 bytes from 20.1.1.1: icmp_seq=3 ttl=64 time=0.133 ms
64 bytes from 20.1.1.1: icmp_seq=4 ttl=64 time=0.124 ms
^C
--- 20.1.1.1 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2997ms
rtt min/avg/max/mdev = 0.079/0.104/0.133/0.025 ms
Supported
Releases
10.2.0E or later
ping6
Tests network connectivity to an IPv6 device.
Syntax
ping6 [vrf {management | vrf-name}] [-aAbBdDfhLnOqrRUvV] [-c count] [-i
interval] [-I interface] [-l preload] [-m mark] [-M pmtudisc_option] [-N
nodeinfo_option] [-p pattern] [-Q tclass] [-s packetsize] [-S sndbuf] [-t
ttl] [-T timestamp_option] [-w deadline] [-W timeout] destination
Parameters
● vrf management — (Optional) Pings an IPv6 address in the management VRF instance.
● vrf vrf-name — (Optional) Pings an IPv6 address in a specified VRF instance.
● -a — (Optional) Audible ping.
● -A — (Optional) Adaptive ping. An inter-packet interval adapts to the round-trip time so that one
(or more, if you set the preload option) 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 the 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.
● -F flowlabel — (Optional) Sets a 20-bit flow label on echo request packets. If value is zero, the
kernel allocates a random flow label.
● -h — (Optional) Displays help for this command.
● -i interval — (Optional) Enter the interval in seconds to wait between sending each packet, the
default is 1 second.
● -I interface-name or interface-ip-address — (Optional) Enter the source interface
name without spaces or the interface IP address:
○ 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-channel.
● -l preload — (Optional) Enter the number of packets that ping sends before waiting for a reply.
Only a super-user may preload more than three.
● -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 this option 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 a maximum of 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.
74
CLI Basics