Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 1161

Default Command Mode Usage Information Not configured EXEC This command uses an ICMP ECHO_REQUEST datagram to receive an ICMP ECHO_RESPONSE from a network host or gateway. Each ping packet has an IPv4 and ICMP header, then a time value and a number of ''pad'' bytes used to fill out the packet. A ping operation sends a packet to a specified IP address and then measures the time that it takes to get a response from the address or device. If the destination IP address is active, replies are sent back from the server including the IP address, number of bytes sent, lapse time in milliseconds, and TTL, which is the number of hops back from the source to the destination. When you use the -I option and enter an IP address, OS10 considers it as the source address. If you use an interface name instead of the IP address, OS10 considers it as the egress interface. With the -I option, if you ping a reachable IP address using the IP address of a loopback interface as the source interface, the ping succeeds. However, if you ping a reachable IP address using the name of the loopback interface as the source interface, the ping fails. This is because the system considers the loopback interface as the egress interface. Example OS10# ping 20.1.1.1 PING 20.1.1.1 (20.1.1.1) 56(84) bytes of data. 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. Troubleshoot OS10 1161