bt74
asked on
Ip address change
Hi
I am having a Solaris box 2.5.1 and i need to change the ip address.
i have done it by ifconfig command.
ifconfig le0 inet 111.111.0.2 netmask 255.255.255.224 broadcast 111.111.0.31
also i made changes in the following files also.
/etc/hosts
111.111.0.2 hostname
/etc/netmasks
111.111.0.0 255.255.255.224
also i have the gateway entry.
route add default 111.111.0.1 1
--------------------------
the pblm is when am rebooting my server, my broadcast address is not setting properly. due to this from some of my local networks, they r unable to reach my server....
after rebooting my broadcast addrees is setting to 111.255.255.255 instted of 111.111.0.31
where is the pblm..???
my mask is showing ff000000 ( is this equals to == 255.255.255.224 )
this is my interface output.
$ ifconfig le0
le0: flags=863<UP,BROADCAST,NOT
inet 111.111.0.2 netmask ff000000 broadcast 111.255.255.255
i need the output like this..
le0: flags=863<UP,BROADCAST,NOT
inet 111.111.0.2 netmask 255.255.255.224 broadcast 111.111.0.31
where am making the mistakes..???
regards
I am having a Solaris box 2.5.1 and i need to change the ip address.
i have done it by ifconfig command.
ifconfig le0 inet 111.111.0.2 netmask 255.255.255.224 broadcast 111.111.0.31
also i made changes in the following files also.
/etc/hosts
111.111.0.2 hostname
/etc/netmasks
111.111.0.0 255.255.255.224
also i have the gateway entry.
route add default 111.111.0.1 1
--------------------------
the pblm is when am rebooting my server, my broadcast address is not setting properly. due to this from some of my local networks, they r unable to reach my server....
after rebooting my broadcast addrees is setting to 111.255.255.255 instted of 111.111.0.31
where is the pblm..???
my mask is showing ff000000 ( is this equals to == 255.255.255.224 )
this is my interface output.
$ ifconfig le0
le0: flags=863<UP,BROADCAST,NOT
inet 111.111.0.2 netmask ff000000 broadcast 111.255.255.255
i need the output like this..
le0: flags=863<UP,BROADCAST,NOT
inet 111.111.0.2 netmask 255.255.255.224 broadcast 111.111.0.31
where am making the mistakes..???
regards
Hi,
ff000000 is 255.0.0.0, not 255.255.255.224. It is standard Class A netmask.
As my experience, Solaris 2.5.1 (which is not supported by Sun anymore) has problem to set the netmask which is not standard Class A, B, C. In other words, /etc/netmasks might not work for 255.255.255.224.
Since your IP address 111.*.*.* is in the Class A range, so your netmask is set to 255.0.0.0.
The other workaround is adding one line in /etc/rc2
"ifconfig le0 down; ifconfig le0 111.111.0.2 netmask 255.255.255.224 up"
PsiCop, the question is "change IP", not hostname. Besides, there are 6 files need to be changed for hostname change for Solaris.
Regards,
Wesly
ff000000 is 255.0.0.0, not 255.255.255.224. It is standard Class A netmask.
As my experience, Solaris 2.5.1 (which is not supported by Sun anymore) has problem to set the netmask which is not standard Class A, B, C. In other words, /etc/netmasks might not work for 255.255.255.224.
Since your IP address 111.*.*.* is in the Class A range, so your netmask is set to 255.0.0.0.
The other workaround is adding one line in /etc/rc2
"ifconfig le0 down; ifconfig le0 111.111.0.2 netmask 255.255.255.224 up"
PsiCop, the question is "change IP", not hostname. Besides, there are 6 files need to be changed for hostname change for Solaris.
Regards,
Wesly
From what I remember about older Solaris revs, you had to be pretty verbose in /etc/netmasks. So something like this:
111.0.0.0 255.255.255.0
111.111.0.0 255.255.255.224
I can't remember exactly but you have to put more in /etc/netmasks then what you would think you would really need to.
111.0.0.0 255.255.255.0
111.111.0.0 255.255.255.224
I can't remember exactly but you have to put more in /etc/netmasks then what you would think you would really need to.
you have to adapt /etc/inet/netmasks (and probably /etc/init.d/ip_aliases)
The best way to deal with this is :
at the root prompt # type sys-unconfig
this will allow you to reconfigure all network settings in a question / answer fashion.
Don't be scared about the warning though ( Below) it only refers to the network settings beeing cleared to
allow you to change them.
"This program will unconfigure your system. It will cause it
to revert to a "blank" system - it will not have a name or know
about other systems or networks "
Regards
Ray
at the root prompt # type sys-unconfig
this will allow you to reconfigure all network settings in a question / answer fashion.
Don't be scared about the warning though ( Below) it only refers to the network settings beeing cleared to
allow you to change them.
"This program will unconfigure your system. It will cause it
to revert to a "blank" system - it will not have a name or know
about other systems or networks "
Regards
Ray
Hi,
> ifconfig le0 inet 111.111.0.2 netmask 255.255.255.224 broadcast 111.111.0.31
How about put
---------
/etc/hosts
111.111.0.34 hostname
/etc/netmasks
111.111.0.32 255.255.255.224
-------
Back to my CCNA study material, for variable length subnet, the first and the last subnet are not the valid subnet.
So 111.111.0.1 to 111.111.0.31 are not valid.
Wesly
> ifconfig le0 inet 111.111.0.2 netmask 255.255.255.224 broadcast 111.111.0.31
How about put
---------
/etc/hosts
111.111.0.34 hostname
/etc/netmasks
111.111.0.32 255.255.255.224
-------
Back to my CCNA study material, for variable length subnet, the first and the last subnet are not the valid subnet.
So 111.111.0.1 to 111.111.0.31 are not valid.
Wesly
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You should put the "hostname" in that file (I'm assuming the hostname also changed).
You can also try using the sys-unconfig script.