Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 634)

Internet Protocol (IP) Addressing and Protocols
Software Reference for x310 Series Switches
24.10 AlliedWare Plus TM Operating System - Version 5.4.4C C613-50046-01 REV A
Checking IP Connections
To verify connections between networks and network devices, use the ping (Packet
Internet Groper) and trace route functions on your device.
Ping
Ping tests the connectivity between two network devices to determine whether each
network device can “see” the other device. Echo request packets are sent to the
destination addresses and responses are displayed on the console.
If you can ping the end destination, then the physical, Layer 2 and Layer 3 links are
functioning, and any difficulties are in the network or higher layers.
If pinging the end destination fails, use traceroute to discover the point of failure in the
route to the destination.
To ping a device, use the command:
Traceroute
You can use traceroute to discover the route that packets pass between two systems
running the IP protocol. Traceroute sends an initial UDP packets with the Time To Live
(TTL) field in the IP header set starting at 1. The TTL field is increased by one for every
subsequent packet sent until the destination is reached. Each hop along the path
between two systems responds with a TTL exceeded packet (ICMP type 11) and from this
the path is determined.
To use traceroute, use the command:
Enter either the hostname or the IP address of the device you are trying to reach.
awplus# ping {|r>}
awplus# traceroute {<ip-addr>|<hostname>}