TP-Link T2500G-10TSTL-SG3210 T2500G-10TSUN V1 CLI Reference Guide - Page 177

T2500G-10TS# firmware upgrade ip-address fe80::1234 filename firmware.bin It will only upgrade the backup image. Continue? (Y/N):y Operation OK! Reboot with the backup image? (Y/N): n 21.17 ping Description The ping command is used to test the connectivity between the switch and one node of the network. Syntax ping [ ip | ipv6 ] { ip_addr } [ -n count ] [ -l count ] [ -i count ] Parameter ip -- The type of the IP address for ping test should be IPv4. ipv6 -- The type of the IP address for ping test should be IPv6. ip_addr -- The IP address of the destination node for ping test. If the parameter ip/ipv6 is not selected, both IPv4 and IPv6 addresses are supported, for example 192.168.0.100 or fe80::1234. -n count -- The amount of times to send test data during Ping testing. It ranges from 1 to 10. By default, this value is 4. -l count -- The size of the sending data during ping testing. It ranges from 1 to 1500 bytes. By default, this value is 64. -i count -- The interval to send ICMP request packets. It ranges from 100 to 1000 milliseconds. By default, this value is 1000. Command Mode User EXEC Mode and Privileged EXEC Mode Privilege Requirement None. Example To test the connectivity between the switch and the network device with the IP 192.168.0.131, please specify the count (-l) as 512 bytes and count (-i) as 1000 milliseconds. If there is not any response after 8 times' Ping test, the connection between the switch and the network device is failed to establish: 161