help on network config

[stin wang]

because if i use windows, those subnet communicate properly.

btw.

pc1 ubuntu
pc2 and pc3 pc4 all in windows

I think it should be some wrong with my network configure ,mabey hardware.

maybe i should get some help from my network administrator.




2008/4/1, Nils Kassube <kassube at gmx.net>:
>
> stin wang wrote:
> > pc1
> > ip 172.18.20.87
> > mask 255.255.255.224
> > gate 172.18.20.94
> > pc2
> > 172.18.20.98
> > 255.255.255.224
> > 172.18.20.126
> > pc3
> > 172.18.20.225
> > 255.255.255.224
> > 172.18.20.253
> >
> > i can ping 172.18.20.98 172.18.20.225 in pc1 ,it's ok
> > but i can't use ftp,vnc,or tsclient to pc2 or pc3, but it's ok for
> > 172.18.20.88 which is in the same gateway as pc1,
>
> How are those PCs connected? There should be a router with 3 ports between
> the PCs with the addresses *.94, *.126 and *.253 and it needs routing
> enabled between the ports.
>
> > or just ubuntu have some problem with subnet??
>
> Don't think so. Probably there is something wrong with your network
> layout. If all 3 PCs should see each other, you should better use the
> same subnet for all of them. E.g. PC1 = 172.18.20.87, PC2 = 172.18.20.88,
> PC3 = 172.18.20.89, netmask 255.255.255.224. If you have a router
> connecting your network to the internet, use the IP of the router for the
> gateway on all 3 PCs.
>
> However, if you have a router connected, it is highly recommended to get
> rid of your static routing. Enable DHCP on the router and on the PCs.
>
>
> Nils
>
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-- 
----------------------------------------------
Tie Wang
TianJin Climate Center
TianJin Meteorological Bureau
Tianjin, China, 300074
Email: stin.wang at gmail.com
Tel:+86-22-23333559
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