[PLUG] Ubuntu: Testing Wired Network Connectivity

Mike C. mconnors1 at gmail.com
Mon Dec 3 21:17:34 UTC 2012


  Ctrl Alt + T and yes you will need either dhcp or to assign and static IP

> and setup routing otherwise the host won't know how to connect which is
> nothing to do with Ubuntu but has everything to do with the Network Stack.
>
> You only need to setup routing if you're trying to communicate to a host
on a different network. Two hosts on the same ip network don't use any
routing protocols. A default gateway is not needed either.
The arp table in each host maps the ip addrs to mac addrs of all the
devices on the same ip net.  When you ping an ip address on the same ip
net, an arp table look up is performed to get the mac address and then the
packets are "routed" to the destination mac addr.

This is applicable even if you have the wireless and wired interface
connected to different LANs, as long as you're connecting to a host on the
same ip net.



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