Network configuration in FreeBSD

[Jerry McAllister]

On Wed, Jan 30, 2008 at 12:57:59PM -0500, Bhuvaneswari Ramkumar wrote:

> with the above assigned IP address and net-mask I'm reading to make it work
> and ping my LAN successfully ( which it doesn't now)  before I put them in
> the rc.conf script.

I should mention that the line changes if you are using DHCP for
dynamic IP assignment.    Then, your system will query the net for
a DHCP server to assign an IP and other DNS information.  I only
have fixed IPs right now, so I don't know the syntax for that off
the top of my head.   You can look it up.

////jerry




> 
> On Wed, Jan 30, 2008 at 12:51 PM, Jerry McAllister <jerrymc at msu.edu> wrote:
> 
> > On Wed, Jan 30, 2008 at 12:19:33PM -0500, Bhuvaneswari Ramkumar wrote:
> >
> > > ifconfig em0 up also doesnt help ping my LAN.
> > >
> > > the ifconfig -a output now reads the IP I just added, as well as the
> > > net-mask & the 100 Mbps active linnk.
> > >
> > > quick question :
> > >
> > > I did an ifconfig em0 1.1.1.2  yday.should this be done everytime I
> > restart
> > > my application, is it some kind of a temporary address assignment, bcos
> > > whatever I assigned was not visible today when I re-booted and I had to
> > do
> > > it again, probably I should set this in the conf file also ? maybe as
> > > another user said my NIC is not enabled or something like that.
> >
> > You have to put it in /etc/rc.conf so it will be taken care of during
> > network initialization each time you boot.     Everything at startup
> > reads the /etc/rc.conf and finds variables it needs to do its startup
> > and network startup does that too.   So, you put in a line like:
> >
> >  ifconfig_em0="inet 1.1.1.2  netmask 255.255.255.0"
> > and
> >  defaultrouter="1.1.1.3"
> >
> > Amongst a number of other startup settings in /etc/rc.conf
> >
> > network startup sees those and says 'oh, I know what to do with those'
> > and runs the ifconfig, etc.
> > Note that putting it in rc.cong only causes a 'ifconfig_em0' variable
> > to be set to    "inet 1.1.1.2  netmask 255.255.255.0"
> > and the 'defaultrouter' variable to be set to "1.1.1.3"
> > It is up to the startup programs to do something about it.
> >
> > The startup programs are generally run from the /etc/rc script and
> > from other scripts that it runs.
> >
> > ////jerry
> >
> > >
> > >
> > > On Wed, Jan 30, 2008 at 12:14 PM, ???????????? Ashish <
> > wahjava.ml at gmail.com> wrote:
> > >
> > > > ,--[ On Wednesday 30 Jan 2008, Bhuvaneswari Ramkumar wrote:
> > > > | I did have an IP address assigned to my ethernet interface( using
> > the
> > > > | ifconfig command)  but I'm unable to ping anybody in my LAN.
> > > >
> > > > In the 'ifconfig -a' output you posted earlier, the 'em0' (your
> > desired
> > > > interface) interface neither has any IP address assigned to it, nor
> > its UP
> > > > .
> > > > So, if you've assigned an IP address to 'em0', then also make sure its
> > UP,
> > > > by
> > > > doing 'ifconfig em0 up' .
> > > >
> > > > HTH
> > > > --
> > > > Ashish Shukla ???????????? ???????????????
> > > > http://wahjava.wordpress.com/
> > > > ?-- ?- ???? ?--- ?- ???- ?- ?--?-? --? -- ?- ?? ?-?? ?-?-?- -?-? ---
> > --
> > > >
> >
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