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Revision 7.10
2/28/2012
IF DNS IS MISCONFIGURED... You may still proceed testing while your Network
Administrator is repairing DNS by substituting IP Numbers for Hostnames.
12.8.4.3 Confirm network connectivity of dockserver.yourdomain.com
Can you ping it by name?
[you@client ~]$ ping -c 3 dockserver.yourdomain.com
PING dockserver.yourdomain.com (10.20.30.40) 56(84) bytes of data.
64 bytes from dockserver.yourdomain.com (10.20.30.40): icmp_seq=1 ttl=64 time=1.27 ms
64 bytes from dockserver.yourdomain.com (10.20.30.40): icmp_seq=2 ttl=64 time=0.345 ms
64 bytes from dockserver.yourdomain.com (10.20.30.40): icmp_seq=3 ttl=64 time=0.400 ms
--- dockserver.yourdomain.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 0.345/0.672/1.271/0.424 ms
(i) Is Dock Server Ethernet cable plugged in?
(ii) Is Dock Server powered on and running?
(iii) See
Section 1.2 Configuring Dock Server for the Network
(iv) Consult the Network Administrator
What is Dock Server's default gateway? (It should probably be the same as yours)
[you@client ~]$ ssh localuser@dockserver.yourdomain.com /sbin/route -n
localuser@dockserver.yourdomain.com's password:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.20.30.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0. 10.20.30.1 0.0.0.0 UG 0 0 0 eth0
Can Dock Server talk to it's default gateway?
[you@client ~]$ ssh localuser@dockserver.yourdomain.com ping -c 3 10.20.30.1
localuser@dockserver.yourdomain.com's password:
PING 10.20.30.1 (10.20.30.1) 56(84) bytes of data.
64 bytes from 10.20.30.1: icmp_seq=0 ttl=64 time=0.542 ms
64 bytes from 10.20.30.1: icmp_seq=1 ttl=64 time=0.491 ms
64 bytes from 10.20.30.1: icmp_seq=2 ttl=64 time=0.506 ms
--- 10.20.30.1 ping statistics ---
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