Ping uses Internet Control Message Protocol (ICMP) Echo messages to determine if a remote host is active or inactive and to determine the round-trip delay when communicating with it. Ping tool sends ICMP (type 8) message to the host and waits for the ICMP echo-reply (type 0). The interval between these events is called round trip. If the response (that is called pong) has not come until the end of the interval, we assume it has timed out. The second significant parameter reported is ttl (Time to Live). Is is decremented at each machine in which the packet is processed. The packet will reach its destination only when the ttl is greater than the number of routers between the source and the destination.
/ping [address] [properties]
Ping tool can be used to ping IP address and mac address. Mac ping works only to devices that has mac ping server configured.
|arp-ping (yes | no; Default: )|
|count (integer [0..4294967295]; Default: 0)||Total number of packets to send (defult is to send forever until interrupted).|
|do-not-fragment (; Default: )||If do-not-fragment flag is set packets will not be fragmented if size exceeds interface mtu.|
|interface (string; Default: )||Which interface to use (required when pinging IPv6 address)|
|interval (time [10ms..5s]; Default: 1s)||how long to wait for response. If no response is received within 1000ms, ping will show as "timed out", but if you will receive a response after 3ms, still the ping program will wait the rest of 997ms until it sends next ping.|
|routing-table (string; Default: main)||Which routing table to use to resolve destination. Used in VRF setups.|
|size (integer; Default: 64)||Packet size to be used in bytes (includes payload and IP header)|
|src-address (IPv4,IPv6; Default: )||IPv4/IPv6 address to be set as packets source. Useful if replies must be sent to specific address.|
|ttl (integer [1..255]; Default: )||Time to live parameter adjustment|
Ping IP address
[admin@dzeltenais_burkaans] > /ping 10.1.101.3 HOST SIZE TTL TIME STATUS 10.1.101.3 56 64 3ms 10.1.101.3 56 64 10ms 10.1.101.3 56 64 7ms sent=3 received=3 packet-loss=0% min-rtt=3ms avg-rtt=6ms max-rtt=10ms
[admin@dzeltenais_burkaans] > /ping 10.1.101.9 HOST SIZE TTL TIME STATUS timeout timeout timeout sent=3 received=0 packet-loss=100%
It is also possible to ping multicast address to discover all hosts belongign to multicast group:
[admin@dzeltenais_burkaans] > /ping ff02::1 HOST SIZE TTL TIME STATUS fe80::20c:42ff:fe49:fceb 56 64 1ms echo reply fe80::20c:42ff:fe72:a1b0 56 64 1ms echo reply fe80::20c:42ff:fe28:7945 56 64 1ms echo reply fe80::21a:4dff:fe5d:8e56 56 64 3ms echo reply sent=1 received=4 packet-loss=-300% min-rtt=1ms avg-rtt=1ms max-rtt=3ms
Ping large packets:
[admin@dzeltenais_burkaans] > /ping 10.1.101.3 size=1600 do-not-fragment HOST SIZE TTL TIME STATUS 576 64 3ms fragmentation needed and DF set 576 64 6ms fragmentation needed and DF set sent=2 received=2 packet-loss=0% min-rtt=3ms avg-rtt=4ms max-rtt=6ms
Ping by DNS name
[admin@dzeltenais_burkaans] > /ping www.google.lv HOST SIZE TTL TIME STATUS 220.127.116.11 56 47 59ms 18.104.22.168 56 47 85ms sent=2 received=2 packet-loss=0% min-rtt=59ms avg-rtt=72ms max-rtt=85ms
Ping MAC address
[admin@dzeltenais_burkaans] > /ping 00:0C:42:72:A1:B0 HOST SIZE TTL TIME STATUS 00:0C:42:72:A1:B0 56 0ms 00:0C:42:72:A1:B0 56 0ms sent=2 received=2 packet-loss=0% min-rtt=0ms avg-rtt=0ms max-rtt=0ms
This submenu allows to enable mac ping server.
When mac ping is enabled, other hosts on the same broadcast domain can use ping tool to ping mac address.
[admin@dzeltenais_burkaans] > /tool mac-server ping set enabled=yes