[evan@lunix ~]$ sudo -i [root@lunix ~]# ether-wake -i eth2 00:1F:D0:D3:AE:9C [root@lunix ~]# ping 192.168.1.79 PING 192.168.1.79 (192.168.1.79) 56(84) bytes of data. From 192.168.1.80 icmp_seq=2 Destination Host Unreachable From 192.168.1.80 icmp_seq=3 Destination Host Unreachable From 192.168.1.80 icmp_seq=4 Destination Host Unreachable From 192.168.1.80 icmp_seq=6 Destination Host Unreachable From 192.168.1.80 icmp_seq=7 Destination Host Unreachable From 192.168.1.80 icmp_seq=8 Destination Host Unreachable From 192.168.1.80 icmp_seq=10 Destination Host Unreachable From 192.168.1.80 icmp_seq=11 Destination Host Unreachable From 192.168.1.80 icmp_seq=12 Destination Host Unreachable From 192.168.1.80 icmp_seq=14 Destination Host Unreachable From 192.168.1.80 icmp_seq=15 Destination Host Unreachable From 192.168.1.80 icmp_seq=16 Destination Host Unreachable From 192.168.1.80 icmp_seq=18 Destination Host Unreachable From 192.168.1.80 icmp_seq=19 Destination Host Unreachable From 192.168.1.80 icmp_seq=20 Destination Host Unreachable From 192.168.1.80 icmp_seq=22 Destination Host Unreachable From 192.168.1.80 icmp_seq=23 Destination Host Unreachable From 192.168.1.80 icmp_seq=24 Destination Host Unreachable From 192.168.1.80 icmp_seq=26 Destination Host Unreachable From 192.168.1.80 icmp_seq=27 Destination Host Unreachable From 192.168.1.80 icmp_seq=28 Destination Host Unreachable From 192.168.1.80 icmp_seq=30 Destination Host Unreachable From 192.168.1.80 icmp_seq=31 Destination Host Unreachable From 192.168.1.80 icmp_seq=32 Destination Host Unreachable 64 bytes from 192.168.1.79: icmp_seq=33 ttl=64 time=1001 ms 64 bytes from 192.168.1.79: icmp_seq=34 ttl=64 time=1.26 ms 64 bytes from 192.168.1.79: icmp_seq=35 ttl=64 time=0.193 ms 64 bytes from 192.168.1.79: icmp_seq=36 ttl=64 time=0.194 ms 64 bytes from 192.168.1.79: icmp_seq=37 ttl=64 time=0.175 ms 64 bytes from 192.168.1.79: icmp_seq=38 ttl=64 time=0.172 ms --- 192.168.1.79 ping statistics --- 38 packets transmitted, 6 received, +24 errors, 84% packet loss, time 36994ms rtt min/avg/max/mdev = 0.172/167.184/1001.102/372.939 ms, pipe 3 [root@lunix ~]# logout [evan@lunix ~]$ ssh 192.168.1.79 evan@192.168.1.79's password: Last login: Tue Apr 12 17:30:58 2011 from 192.168.1.80 [evan@evanfc12 ~]$
Just saved me a trip downstairs!
Evan Hoffman's Blog 
I am using:
Virtual machine: Vmware workstation
Os: Red hat Linux
I wanted to implement wol to wake up compute node. I keyed in what you have did on the frontend node. But the line, eg(64 bytes from 192.168.206.134: icmp_seq=38 ttl=3302 time=0.172 ms…) keeps running. I ping the inet addr 192.168.206.134. Is it wrong? Please help me.
Thank you! 🙂
If you’re receiving a ping reply from the host (e.g. 64 bytes from…) then the host is up. When the host is down you’ll get a response like “Destination Host Unreachable”. On Linux, ping will run forever, so you can press ctrl-C to cancel it.