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Simon Avery wrote: > exetmp03 wrote: > >>> What output do you get from ifconfig when it is connected? >> output of ifconfig >> [root@localhost ~]# /sbin/ifconfig >> eth0 Link encap:Ethernet HWaddr FF:FF:FF:FF:FF:FF >> inet addr:10.0.0.11 Bcast:255.255.255.255 Mask:255.0.0.0 >> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 >> RX packets:67 errors:0 dropped:0 overruns:0 frame:0 >> TX packets:84 errors:0 dropped:0 overruns:0 carrier:0 >> collisions:0 txqueuelen:1000 >> RX bytes:4550 (4.4 KiB) TX bytes:3828 (3.7 KiB) >> Interrupt:10 Base address:0xd400 > > Now, I'm not an expert, but that looks wrong to me - and certainly > different to what I've got on my boxes. > > Both bcast and mask appear to be set wrongly - bcast is effectively > disabled (if I understand it right) and mask is bad too. > > Here's one of mine on the same range > > eth0 Link encap:Ethernet HWaddr 00:15:58:11:09:73 > inet addr:10.0.0.30 Bcast:10.0.0.255 Mask:255.255.255.0 > inet6 addr: fe80::215:58ff:fe11:973/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:202002308 errors:0 dropped:0 overruns:0 frame:0 > TX packets:82838714 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:500953681 (477.7 MiB) TX bytes:1436898995 (1.3 GiB) > Interrupt:209 Base address:0x6000 > > Somebody please correct me if I'm talking crap btw. :) Sorry, but there's nothing wrong with his "mask". A mask of 255.0.0.0 is a "Class A" mask and will allow you to have something like 16.7M hosts on the 10.x.x.x network. You're using a "Class C" mask of 255.255.255.0 which allows for 254 hosts on the 10.0.0.x network. Both are perfectly acceptable. You are indeed correct about the broadcast address, however. With a Class A subnetmask, the broadcast for that address should be 10.255.255.255 What's worrying me somewhat is the fact that his card's MAC address is wholely invalid. Grant. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html