network Command
The network command has options that let you activate, deactivate, or restart all network interface(s), or ping a specific system on the network.
Type the following command from your command line.
network [ start | stop | restart | ping ip-address ]
| Parameter | Description |
|---|---|
| start | Activates network interface(s). |
| stop | Deactivates network interface(s). |
| restart | Deactivates and then activates network interface(s). |
| ping ip-address | Pings the specified IP address. |
The network ping command determines network connectivity. When using ping for fault isolation, you initially run it on the local host, to verify that the local network interface is up and running. Then, ping hosts and gateways further and further away.
The ping command uses the ICMP protocols mandatory ECHO_REQUEST datagram to elicit an ICMP ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams (ping) have an IP and ICMP header, followed by a strict time value and then an arbitrary number of pad bytes used to fill out the packet.
Examples
- To restart all network interfaces:
-
> network restart Removing default gateway... [ OK ] Bringing down the eth0 interface... [ OK ] Bringing down the eth1 interface... [ OK ] Bringing up the eth0 interface... [ OK ] Bringing up the eth1 interface... [ OK ] Setting up default gateway... [ OK ] - To determine network connectivity with the system that has IP address 10.1.1.222:
-
> network ping 10.1.1.222 PING 10.1.1.222 (10.1.1.222): 56 octets data 64 octets from 10.1.1.222: icmp_seq=0 ttl=64 time=2.1 ms 64 octets from 10.1.1.222: icmp_seq=1 ttl=64 time=1.0 ms 64 octets from 10.1.1.222: icmp_seq=2 ttl=64 time=0.8 ms 64 octets from 10.1.1.222: icmp_seq=3 ttl=64 time=1.2 ms 64 octets from 10.1.1.222: icmp_seq=4 ttl=64 time=1.3 ms --- 10.1.1.222 ping statistics --- 5 packets transmitted, 5 packets received, 0% packet loss round-trip min/avg/max = 0.8/1.2/2.1 ms