Hi Daniel,
Open /sbin/ifup script and add lines into script after :
ifconfig ${DEVICE} ${IPADDR} pointopoint ${REMIP}
fi
# set MTU size if given
if [ -z "$MTU" ]; then
ifconfig ${DEVICE} mtu ${MTU}
fi
#set NETMASK if given
if [ -z "$NETMASK" ]; then
ifconfig ${DEVICE} netmask ${NETMASK}
fi
Because ctc is in point-to-point network netmask has to be 255.255.255.255
but some programs like SAMBA does not work with it.
Add to ifcfg-ctc0 next lines:
NETMASK=255.255.255.128
MTU=1500
Regards,
Julia
[EMAIL PROTECTED] wrote:
> If you want me to post everything, let me know... for now i'm cutting a
> lot out
>
> # bash -x /sbin/ifup ctc0
> ...bunch of stuff, it's reading from /etc/sysconfig/network just fine...
> more stuff ...
> + CONFIG=ctc0
> + '[' -z ctc0 ']'
> + need_config ctc0
> + '[' -f ctc0 ']'
> + CONFIG=../networking/default/ctc0
> + '[' -f ../networking/default/ctc0 ']'
> + CONFIG=../networking/default/ifcfg-ctc0
> + '[' -f ../networking/default/ifcfg-ctc0 ']'
> + CONFIG=ifcfg-ctc0
> + '[' -f ifcfg-ctc0 ']'
> + '[' 0 '!=' 0 ']'
> + source_config
> ++ basename ifcfg-ctc0
> ++ sed 's/^ifcfg-//g'
> + DEVNAME=ctc0
> + basename ifcfg-ctc0
> + grep '[^g]-'
> + . ifcfg-ctc0
> ++ DEVICE=ctc0
> ++ BOOTPROTO=static
> ++ IPADDR=172.16.18.130
> ++ NETMASK=255.255.0.0
> ++ ONBOOT=yes
> ++ REMIP=172.16.18.129
> + '[' foo = fooboot -a yes = no -o yes = NO ']'
> + '[' -n '' -a '' = no -o '' = NO ']'
> ++ echo ctc0
> ++ sed 's/[0-9]*$//'
> + DEVICETYPE=ctc
> ++ echo ctc0
> ++ sed 's/:.*//g'
> + REALDEVICE=ctc0
> + echo ctc0
> + grep -q :
> + ISALIAS=no
> + '[' '' = yes ']'
> + '[' static = bootp -o static = dhcp ']'
> + '[' -x /sbin/ifup-pre-local ']'
> + OTHERSCRIPT=/etc/sysconfig/network-scripts/ifup-ctc
> + '[' -x /etc/sysconfig/network-scripts/ifup-ctc ']'
> + exec /etc/sysconfig/network-scripts/ifup-ctc ifcfg-ctc0
> SIOCADDRT: File exists
>
> okay, i don't have a networking/default directory (I have a
> networking/profiles/default, but it's empty)
> it's pulling NETMASK=255.255.0.0, but when I do type ifconfig it shows
> netmask 255.255.255.255, and in my ifcfg-ctc0 i have NETMASK=255.255.255.128
> It's not doing MTU=1500 either
> SIOCADDRT: File exists? That happens if I "route add" something that's
> already there
>
> [root@tcsl root]# bash -x /etc/sysconfig/network-scripts/ifup-ctc ifcfg-ctc0
> ... bunch of stuff ...
> + . ifcfg-ctc0
> ++ DEVICE=ctc0
> ++ BOOTPROTO=static
> ++ IPADDR=172.16.18.130
> ++ NETMASK=255.255.0.0
> ++ ONBOOT=yes
> ++ REMIP=172.16.18.129
> + '[' '' = boot -a yes = no ']'
> + '[' -n '' ']'
> + ifconfig ctc0 172.16.18.130 pointopoint 172.16.18.129
> + timeout=0
> + ping -w 30 -c 1 172.16.18.129
> + '[' '' '!=' '' ']'
> + . /etc/sysconfig/network
> ++ NETWORKING=yes
> ++ HOSTNAME=tcsl.tcs.timeinc.com
> ++ GATEWAY=172.16.18.129
> + '[' 172.16.18.129 '!=' '' ']'
> + '[' '' = '' -o '' = ctc0 ']'
> + route add default gw 172.16.18.129
> SIOCADDRT: File exists
> + /etc/sysconfig/network-scripts/ifup-post ifcfg-ctc0
>
> Again, this value for NETMASK and no MTU... where is it coming up with this?
> I had mentioned opts wasn't getting set, earlier:
> echo "ifconfig ${DEVICE} ${IPADDR} ${opts} pointopoint
> ${REMIP}">/tmp/ctc.log
> in the script yielded
> ifconfig ctc0 172.16.18.130 pointopoint 172.16.18.129
>
> I'm all ears,
> Daniel
>
> [EMAIL PROTECTED] wrote:
>
> >Daniel,
> >
> >Ok, it's time to get down and dirty. Do this:
> >bash -x /sbin/ifup ctc0
> >and pick through the output. You should see the information from the
> >ifcfg-ctc0 file being read. At the bottom, you'll see this:
> >+ exec /etc/sysconfig/network-scripts/ifup-ctc ifcfg-ctc0
> >
> >Then, do this:
> >bash -x /etc/sysconfig/network-scripts/ifup-ctc ifcfg-ctc0
> >and see what comes out. Again, you should see the information from the
> >ifcfg-ctc0 file being read, and then the ifconfig command being issued:
> >+ opts= mtu 1500
> >+ ifconfig ctc0 192.168.0.20 mtu 1500 pointopoint 192.168.0.10
> >
> >Interestingly, there seems to be a small bug in the ifup-ctc script:
> >while ! ping -w 30 -c ${REMIP} &>/dev/null; do
> >
> >This specifies an incorrect syntax for the ping command, which fails, which
> >causes an error message that the ctc0 interface didn't come up. That part
> >can be ignored.
> >
> >Mark Post
> >
> >-----Original Message-----
> >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> >Sent: Friday, February 01, 2002 10:54 AM
> >To: [EMAIL PROTECTED]
> >Subject: Re: CTC - linux newbie - should be an easy one
> >
> >
> >Still no luck. ifcfg-ctc file is now:
> >
> >DEVICE=ctc0
> >BOOTPROTO=static
> >IPADDR=172.16.18.130
> >NETMASK=255.255.255.128
> >ONBOOT=yes
> >REMIP=172.16.18.129
> >GATEWAY=172.16.18.129
> >MTU=1500
> >
> >network was whittled down back to the three lines...
> >
> >on reboot ifconfig ctc0 still shows that netmask is 255.255.255.255 and
> >mtu is 32767.
> >
> >
> >oh well,
> >Daniel
> >
> >[EMAIL PROTECTED] wrote:
> >
> >
> >>Daniel,
> >>
> >>Ah, I missed something. You need a "REMIP" value in your ifcfg-ctc0 file:
> >>REMIP=192.168.0.10
> >>This is the IP address of the "other end" of your CTC link. Here's _my_
> >>complete file:
> >>DEVICE=ctc0
> >>BOOTPROTO=static
> >>IPADDR=192.168.0.20
> >>REMIP=192.168.0.10
> >>GATEWAY=192.168.0.10
> >>ONBOOT=yes
> >>MTU=1500
> >>
> >>I don't know if Peter Bishop's suggestion to change BOOTPROTO to static is
> >>necessary, but since we both have it in our files, it isn't going to hurt.
> >>
> >>You should remove the additional stuff you put in /etc/sysconfig/network.
> >>
> >>Mark Post
> >>
> >>-----Original Message-----
> >>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> >>Sent: Thursday, January 31, 2002 3:07 PM
> >>To: [EMAIL PROTECTED]
> >>Subject: Re: CTC - linux newbie - should be an easy one
> >>
> >>
> >>I tried renaming the file, and that wasn't enough for things to work
> >>correctly. On reboot MTU is 32767 and netmask 255.255.255.255 for ctc0
> >>
> >>ifup-ctc is executing to the end (route add default gw ${GATEWAY} is
> >>being performed), so that seems okay.
> >>
> >>Two noteworthies:
> >>earlier in the script, the ifconfig line is called with ${opts} being
> >>empty, instead of "mtu 1500" or something.
> >>$NETWORK also seems to be empty during execution
> >>
> >>here's some informational stuff
> >># cat /etc/modules.conf
> >>alias parport_lowlevel parport_pc
> >>alias ctc0 ctc
> >>(parport was there from the beginning, just added the alias ctc0)
> >>
> >>#cat /etc/sysconfig/network
> >>NETWORKING=yes
> >>HOSTNAME=tcsl.tcs.timeinc.com
> >>GATEWAY=172.16.18.129
> >>NETMASK=255.255.255.128
> >>MTU=1500
> >>NETWORK=172.16.18.129
> >>(this used to be just the top three, but I keep on throwing more stuff
> >>in here in hopes that something'll catch)
> >>
> >># cat /etc/sysconfig/networking/ifcfg-ctc0
> >>DEVICE=ctc0
> >>IPADDR=172.16.18.130
> >>NETMASK=255.255.255.128
> >>ONBOOT=yes
> >>GATEWAY=172.16.18.129
> >>USERCTL=no
> >>MTU=1500
> >>BOOTPROTO=none
> >>NETWORK=172.16.18.129
> >>(in the beginning the file didn't exist, i keep throwing in stuff hoping
> >>something'll catch)
> >>
> >>
> >>RH 7.2, LPAR installation.
> >>I used to have at least the netmask part correct on reboot, but haven't
> >>ever had the mtu to work correctly.
> >>But now neither of them are working.
> >>
> >>
> >>See anything glaring?
> >>Thanks,
> >>Daniel
> >>
> >>
> >>[EMAIL PROTECTED] wrote:
> >>
> >>
> >>>Daniel,
> >>>
> >>>I believe that if you rename ifcfg-ctc to ifcfg-ctc0 that things will
> >>>
> >start
> >
> >>>happening for you. Those files are created for each interface, not a
> >>>
> >class
> >
> >>>of interfaces.
> >>>
> >>>Mark Post
> >>>
> >>>-----Original Message-----
> >>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> >>>Sent: Thursday, January 31, 2002 10:05 AM
> >>>To: [EMAIL PROTECTED]
> >>>Subject: CTC - linux newbie - should be an easy one
> >>>
> >>>
> >>>I really hate to ask, because I had it working before, but after a fresh
> >>>reinstall I couldn't get it working again.
> >>>RH 7.2 on an LPAR. Everytime I reboot I have to
> >>>
> >>>ifconfig ctc0 mtu 1500 netmask 255.255.255.128
> >>>and
> >>>route add default gw blah.blah.blah.blah
> >>>
> >>>(and vary tcpip on the gateway lpar)
> >>>
> >>>I'd like to avoid doing this, and am not about to hardcode values in the
> >>>network-scripts. I've added alias ctc0 ctc
> >>>to my modules.conf so now it reads:
> >>>alias parport_lowlevel parport_pc
> >>>alias ctc0 ctc
> >>>
> >>>
> >>>I've also created /etc/sysconfig/networking/ifcfg-ctc and threw in some
> >>>values (which didn't do much)
> >>>
> >>>in /etc/sysconfig/network I have NETWORKING, HOSTNAME, and GATEWAY set
> >>>correctly.
> >>>
> >>>I've been tinkering with this for some time and it's just not working.
> >>>Previously I had gotten the configuration files to the point where
> >>>rebooting would get the netmask and default gateway correct (not MTU),
> >>>but I didn't make backups of config files I changed before I
> >>>reinstalled, and now I can't re-figure out what to do where. What am I
> >>>doing wrong?
> >>>
> >>>
> >>>Thanks,
> >>>Daniel
> >>>
