help on network config

[stin wang]

i can't change pc2,pc3  as you say, because the gateway should be determined
by its location. many pcs distrubute in different floors.


2008/4/1, stin wang <stin.wang at gmail.com>:
>
> 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
> ----------------------------------------------
>



-- 
----------------------------------------------
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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