Re: DHCP/NIC IP address contention issues

2007-04-26 Thread Beech Rintoul
On Thursday 26 April 2007, L Goodwin said:
> --- Beech Rintoul <[EMAIL PROTECTED]> wrote:
> > > Beech Rintoul <[EMAIL PROTECTED]> wrote: On
> >
> > Wednesday 25
> >
> > April 2007, L Goodwin said:
> > > > Will someone please lead me in the right
> >
> > direction towards
> >
> > > > resolving the following network issue?
> > > >
> > > > I just added a FreeBSD server to a LAN that
> >
> > consists of a router
> >
> > > > and 2 pc's, one of which is running Windows XP
> >
> > Pro and the other
> >
> > > > Windows Vista. The lan is connected to the
> >
> > Internet via a cable
> >
> > > > modem that goes through the router. The router
> >
> > is set up to be
> >
> > > > the DHCP server. Now it is being assigned a
> >
> > non-unique IP
> >
> > > > address.
> > > >
> > > >  Before adding the FreeBSD box to the mix,
> >
> > everybody was getting
> >
> > > > along fine (unique IP addresses were dynamically
> >
> > assigned to the
> >
> > > > pc's).
> > > >
> > > > I connected the FreeBSD box to the router,
> >
> > selected "Configure
> >
> > > > additional network interfaces" from the
> >
> > sysinstall menu, selected
> >
> > > > "fxp0 Intel EtherExpress Pro/100B PCI Fast
> >
> > Ethernet card" from
> >
> > > > the top of the list and clicked "OK" to prompts
> >
> > to try to
> >
> > > > configure IPv6 and DCHP. When done, the Network
> >
> > Configuration
> >
> > > > dialog contained the following values (which I
> >
> > did not alter):
> > > > Host: dhcppc0
> > > > Domain: (the cable provider's domain name)
> > > > IPv4 Gateway: 192.168.1.1
> > > > Name server: (IP address of ISP's name server)
> > > > Configuration for Interface fxp0:
> > > > IPv4 Address: 192.168.1.33
> > > > Netmask: 255.255.255.0
> > > > Extra options: (blank)
> > > >
> > > > Note that the Host field does not match the
> >
> > hostname of the
> >
> > > > FreeBSD box, which is named "SERVER" (real
> >
> > creative, huh?). I
> >
> > > > guess I should have changed the Host field to
> >
> > "SERVER", eh?
> >
> > > > Then I got the following console messages on the
> >
> > FreeBSD server:
> > > > 1) "Apr 25 13:33:19 SERVER kernel: arp
> >
> > 00:40:f4:47:fb:8e is using
> >
> > > > my IP address xxx.xxx.x.xx!" 2) "dhcppc0# Apr 25
> >
> > 14:07:05 dhcpp0
> >
> > > > kernel: arp: 00:40:f4:47:fb:8e is using my IP
> >
> > address
> >
> > > > xxx.xxx.x.xx!"
> > > >
> > > > I ran "ipconfig /all" on both Windows boxes and
> >
> > found that the
> >
> > > > FreeBSD box is assigned the same IP address as
> >
> > the Windows XP box
> >
> > > > (which had that IP address FIRST). Why is the
> >
> > FreeBSD box being
> >
> > > > assigned a non-unique IP address?
> > >
> > > 1. Check that your router's dhcp server is set up
> >
> > properly.
> >
> > > 2. Check that the windows box is not set up with a
> >
> > static ip. The
> >
> > > box could be hard coded to an ip address and your
> >
> > dhcp server
> >
> > > thinks the lease is free.
> > >
> > > Other than that you need to supply more info.
> > >
> > > Beech
> > >
> > > On Wednesday 25 April 2007, L Goodwin said:
> > > I'll double-check the things you listed. If you
> >
> > can tell me what
> >
> > > additional info I need to supply and where to get
> >
> > it, I'll be happy
> >
> > > to oblige. Thanks...
> >
> > On the XP box what does the output of 'ipconfig
> > /all' tell you about the DHCP lease?
>
> Lease Obtained: Thursday, April 26, 2007 7:36:42 AM
> Lease Expires: Sunday, April 29, 2007 7:36:42 AM
> (also says "Dhcp Enabled: Yes" and "Autoconfiguration
> enabled: Yes")
> Given these settings, I don't think I need to run
> ipconfig /renew on this system...
>
> Note: I wasn't able to get on the Vista box to get
> current ipconfig /all output. An older printout shows
> "DHCP Enabled: No", but it was enabled last time I
> checked. I'll check again.
>
> > On the FreeBSD box what is in /etc/rc.conf?
>
> I had a feeling I'd find something like this, but did
> not know where to look):
> --
> hostname="SERVER" (this is the hostname I want to use)
> ipv6_enable="YES"
> sshd_enable="YES"
> usbd_enable="YES"
> samba_enable="YES"
>
> # -- sysinstall generated deltas --
> # Wed Apr 25 13:38:08 2007
> ifconfig_fxp0="DHCP"
> ipv6_enable="YES"
> hostname="dhcppc0."
> --
> Note that there are two each of the ipv6_enable and
> hostname entries.
> I assume I should remove one of each. I want to use
> hostname "SERVER". If I delete this one, will it
> work?:
>   hostname="dhcppc0."
> Please advise as to what to change.
>
Delete any duplicates that you don't want. You should only have one 
entry for hostname=, same for ifconfig_fxp0=.

> > On your router what is the DHCP range set to? and
> > how long do the leases last before they expire?
> >
> >
> > And from the other post it's not possible to
> > "accidentally" make the FreeBSD box a DHCP server.
> > You would have to install the isc-dhcpd
> > port, th

Re: DHCP/NIC IP address contention issues

2007-04-26 Thread L Goodwin

--- Beech Rintoul <[EMAIL PROTECTED]> wrote:

> > Beech Rintoul <[EMAIL PROTECTED]> wrote: On
> Wednesday 25 
> April 2007, L Goodwin said:
> > > Will someone please lead me in the right
> direction towards
> > > resolving the following network issue?
> > >
> > > I just added a FreeBSD server to a LAN that
> consists of a router
> > > and 2 pc's, one of which is running Windows XP
> Pro and the other
> > > Windows Vista. The lan is connected to the
> Internet via a cable
> > > modem that goes through the router. The router
> is set up to be
> > > the DHCP server. Now it is being assigned a
> non-unique IP
> > > address.
> > >
> > >  Before adding the FreeBSD box to the mix,
> everybody was getting
> > > along fine (unique IP addresses were dynamically
> assigned to the
> > > pc's).
> > >
> > > I connected the FreeBSD box to the router,
> selected "Configure
> > > additional network interfaces" from the
> sysinstall menu, selected
> > > "fxp0 Intel EtherExpress Pro/100B PCI Fast
> Ethernet card" from
> > > the top of the list and clicked "OK" to prompts
> to try to
> > > configure IPv6 and DCHP. When done, the Network
> Configuration
> > > dialog contained the following values (which I
> did not alter):
> > >
> > > Host: dhcppc0
> > > Domain: (the cable provider's domain name)
> > > IPv4 Gateway: 192.168.1.1
> > > Name server: (IP address of ISP's name server)
> > > Configuration for Interface fxp0:
> > > IPv4 Address: 192.168.1.33
> > > Netmask: 255.255.255.0
> > > Extra options: (blank)
> > >
> > > Note that the Host field does not match the
> hostname of the
> > > FreeBSD box, which is named "SERVER" (real
> creative, huh?). I
> > > guess I should have changed the Host field to
> "SERVER", eh?
> > >
> > > Then I got the following console messages on the
> FreeBSD server:
> > >
> > > 1) "Apr 25 13:33:19 SERVER kernel: arp
> 00:40:f4:47:fb:8e is using
> > > my IP address xxx.xxx.x.xx!" 2) "dhcppc0# Apr 25
> 14:07:05 dhcpp0
> > > kernel: arp: 00:40:f4:47:fb:8e is using my IP
> address
> > > xxx.xxx.x.xx!"
> > >
> > > I ran "ipconfig /all" on both Windows boxes and
> found that the
> > > FreeBSD box is assigned the same IP address as
> the Windows XP box
> > > (which had that IP address FIRST). Why is the
> FreeBSD box being
> > > assigned a non-unique IP address?
> >
> > 1. Check that your router's dhcp server is set up
> properly.
> >
> > 2. Check that the windows box is not set up with a
> static ip. The
> > box could be hard coded to an ip address and your
> dhcp server
> > thinks the lease is free.
> >
> > Other than that you need to supply more info.
> >
> > Beech
> 
> > On Wednesday 25 April 2007, L Goodwin said:
> > I'll double-check the things you listed. If you
> can tell me what
> > additional info I need to supply and where to get
> it, I'll be happy
> > to oblige. Thanks...
> >
> 
> On the XP box what does the output of 'ipconfig
> /all' tell you about the DHCP lease?
Lease Obtained: Thursday, April 26, 2007 7:36:42 AM
Lease Expires: Sunday, April 29, 2007 7:36:42 AM
(also says "Dhcp Enabled: Yes" and "Autoconfiguration
enabled: Yes")
Given these settings, I don't think I need to run
ipconfig /renew on this system...

Note: I wasn't able to get on the Vista box to get
current ipconfig /all output. An older printout shows
"DHCP Enabled: No", but it was enabled last time I
checked. I'll check again.

> On the FreeBSD box what is in /etc/rc.conf?
I had a feeling I'd find something like this, but did
not know where to look):
--
hostname="SERVER" (this is the hostname I want to use)
ipv6_enable="YES"
sshd_enable="YES"
usbd_enable="YES"
samba_enable="YES"

# -- sysinstall generated deltas -- 
# Wed Apr 25 13:38:08 2007
ifconfig_fxp0="DHCP"
ipv6_enable="YES"
hostname="dhcppc0."
--
Note that there are two each of the ipv6_enable and
hostname entries. 
I assume I should remove one of each. I want to use
hostname "SERVER". If I delete this one, will it
work?:
  hostname="dhcppc0."
Please advise as to what to change.

> On your router what is the DHCP range set to? and
> how long do the leases last before they expire?

> 
> And from the other post it's not possible to
> "accidentally" make the FreeBSD box a DHCP server. 
> You would have to install the isc-dhcpd 
> port, then configure and start it.
In any case, I verified that it's not installed.

> If all of the above looks ok, go to /var/db and
> delete anything that says "dhclient.leases" then 
> restart your machine and see if you get a new IP.
Found dbclient.leases.fxp0 containing 2 "lease {...}"
entries and moved it to $HOME (will delete once it's
all working). 

I was surprised to find that the entries were for the
Vista system (not the XP box). I'll verify that DHCP
is enabled on the Vista box.

One more question: When using DHCP, do I need to do
anything to enable all hosts on the LAN to know each
other by hostname (i.e., do I need

Re: DHCP/NIC IP address contention issues

2007-04-26 Thread Beech Rintoul
> Beech Rintoul <[EMAIL PROTECTED]> wrote: On Wednesday 25 
April 2007, L Goodwin said:
> > Will someone please lead me in the right direction towards
> > resolving the following network issue?
> >
> > I just added a FreeBSD server to a LAN that consists of a router
> > and 2 pc's, one of which is running Windows XP Pro and the other
> > Windows Vista. The lan is connected to the Internet via a cable
> > modem that goes through the router. The router is set up to be
> > the DHCP server. Now it is being assigned a non-unique IP
> > address.
> >
> >  Before adding the FreeBSD box to the mix, everybody was getting
> > along fine (unique IP addresses were dynamically assigned to the
> > pc's).
> >
> > I connected the FreeBSD box to the router, selected "Configure
> > additional network interfaces" from the sysinstall menu, selected
> > "fxp0 Intel EtherExpress Pro/100B PCI Fast Ethernet card" from
> > the top of the list and clicked "OK" to prompts to try to
> > configure IPv6 and DCHP. When done, the Network Configuration
> > dialog contained the following values (which I did not alter):
> >
> > Host: dhcppc0
> > Domain: (the cable provider's domain name)
> > IPv4 Gateway: 192.168.1.1
> > Name server: (IP address of ISP's name server)
> > Configuration for Interface fxp0:
> > IPv4 Address: 192.168.1.33
> > Netmask: 255.255.255.0
> > Extra options: (blank)
> >
> > Note that the Host field does not match the hostname of the
> > FreeBSD box, which is named "SERVER" (real creative, huh?). I
> > guess I should have changed the Host field to "SERVER", eh?
> >
> > Then I got the following console messages on the FreeBSD server:
> >
> > 1) "Apr 25 13:33:19 SERVER kernel: arp 00:40:f4:47:fb:8e is using
> > my IP address xxx.xxx.x.xx!" 2) "dhcppc0# Apr 25 14:07:05 dhcpp0
> > kernel: arp: 00:40:f4:47:fb:8e is using my IP address
> > xxx.xxx.x.xx!"
> >
> > I ran "ipconfig /all" on both Windows boxes and found that the
> > FreeBSD box is assigned the same IP address as the Windows XP box
> > (which had that IP address FIRST). Why is the FreeBSD box being
> > assigned a non-unique IP address?
>
> 1. Check that your router's dhcp server is set up properly.
>
> 2. Check that the windows box is not set up with a static ip. The
> box could be hard coded to an ip address and your dhcp server
> thinks the lease is free.
>
> Other than that you need to supply more info.
>
> Beech

> On Wednesday 25 April 2007, L Goodwin said:
> I'll double-check the things you listed. If you can tell me what
> additional info I need to supply and where to get it, I'll be happy
> to oblige. Thanks...
>

First off, please don't top post. It makes the conversation hard to 
follow.

On the XP box what does the output of 'ipconfig /all' tell you about 
the DHCP lease?

On the FreeBSD box what is in /etc/rc.conf?

On your router what is the DHCP range set to? and how long do the 
leases last before they expire?

And from the other post it's not possible to "accidentally" make the 
FreeBSD box a DHCP server. You would have to install the isc-dhcpd 
port, then configure and start it.

If all of the above looks ok, go to /var/db and delete anything that 
says "dhclient.leases" then restart your machine and see if you get a 
new IP.

Beech



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---
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Re: DHCP/NIC IP address contention issues

2007-04-25 Thread L Goodwin
I'll double-check the things you listed. If you can tell me what additional 
info I need to supply and where to get it, I'll be happy to oblige. Thanks...

Beech Rintoul <[EMAIL PROTECTED]> wrote: On Wednesday 25 April 2007, L Goodwin 
said:
> Will someone please lead me in the right direction towards
> resolving the following network issue?
>
> I just added a FreeBSD server to a LAN that consists of a router
> and 2 pc's, one of which is running Windows XP Pro and the other
> Windows Vista. The lan is connected to the Internet via a cable
> modem that goes through the router. The router is set up to be the
> DHCP server. Now it is being assigned a non-unique IP address.
>
>  Before adding the FreeBSD box to the mix, everybody was getting
> along fine (unique IP addresses were dynamically assigned to the
> pc's).
>
> I connected the FreeBSD box to the router, selected "Configure
> additional network interfaces" from the sysinstall menu, selected
> "fxp0 Intel EtherExpress Pro/100B PCI Fast Ethernet card" from the
> top of the list and clicked "OK" to prompts to try to configure
> IPv6 and DCHP. When done, the Network Configuration dialog
> contained the following values (which I did not alter):
>
> Host: dhcppc0
> Domain: (the cable provider's domain name)
> IPv4 Gateway: 192.168.1.1
> Name server: (IP address of ISP's name server)
> Configuration for Interface fxp0:
> IPv4 Address: 192.168.1.33
> Netmask: 255.255.255.0
> Extra options: (blank)
>
> Note that the Host field does not match the hostname of the FreeBSD
> box, which is named "SERVER" (real creative, huh?). I guess I
> should have changed the Host field to "SERVER", eh?
>
> Then I got the following console messages on the FreeBSD server:
>
> 1) "Apr 25 13:33:19 SERVER kernel: arp 00:40:f4:47:fb:8e is using
> my IP address xxx.xxx.x.xx!" 2) "dhcppc0# Apr 25 14:07:05 dhcpp0
> kernel: arp: 00:40:f4:47:fb:8e is using my IP address
> xxx.xxx.x.xx!"
>
> I ran "ipconfig /all" on both Windows boxes and found that the
> FreeBSD box is assigned the same IP address as the Windows XP box
> (which had that IP address FIRST). Why is the FreeBSD box being
> assigned a non-unique IP address?

1. Check that your router's dhcp server is set up properly.

2. Check that the windows box is not set up with a static ip. The box 
could be hard coded to an ip address and your dhcp server thinks the 
lease is free.

Other than that you need to supply more info.

Beech

-- 
---
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 X  - NO Word docs in e-mail | Latest Release:
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Re: DHCP/NIC IP address contention issues

2007-04-25 Thread L Goodwin
I'm pretty sure the XP box is configured correctly for DHCP (no static IP), but 
will check it again. 

By "check the lease information in the DSL modem", do you mean to see if the CM 
IP Address "Expires" date is earlier than current date? I unplugged both the 
modem and the router today before connecting the new FreeBSD box, so I assume 
that they are both "current".

I'll investigate/try all of the things you listed and see if anything turns up. 
I'll also check to see if /etc/rc.conf contains the following entry: 

ifconfig_fxp0="DHCP"
Is there any way that the NIC on FreeBSD box could get configured multiple 
times (e.g., multiple entries in config files), and if so, could this cause 
this?

If the FreeBSD system were configured as a DHCP server (in addition to the 
router, which definitely is), what would you expect to happen? It shouldn't be, 
but what if it were?

Thank you!

Daniel Marsh <[EMAIL PROTECTED]> wrote: 

On 4/26/07, L Goodwin <[EMAIL PROTECTED]> wrote: Will someone please lead me in 
the right direction towards resolving the following network issue?


1) "Apr 25 13:33:19 SERVER kernel: arp 00:40:f4:47:fb:8e is using my IP address 
xxx.xxx.x.xx!" 
2) "dhcppc0# Apr 25 14:07:05 dhcpp0 kernel: arp: 00:40:f4:47:fb:8e is using my 
IP address xxx.xxx.x.xx!"

I ran "ipconfig /all" on both Windows boxes and found that the FreeBSD box is 
assigned the same IP address as the Windows XP box (which had that IP address 
FIRST). Why is the FreeBSD box being assigned a non-unique IP address? 


Have you checked the network properties (tcp-ip settings) for the XP machine to 
make sure it's being assigned a dynamic IP address?
Have you tried running ipconfig /renew on the XP machine? 
Have you checked the lease information in the DSL modem?

A DHCP server will not hand out the same IP address twice.
The only time I've seen something like this happen is when the DHCP lease times 
out for an IP and windows doesn't renew the lease on the IP, the IP is put into 
the free-ip's pool and handed out when the DHCP feels up to it... 
So if the XP machine is setup for DHCP, it got the IP via dhcp, it probably 
didn't renew the lease on the IP.
 

   
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Re: DHCP/NIC IP address contention issues

2007-04-25 Thread Beech Rintoul
On Wednesday 25 April 2007, L Goodwin said:
> Will someone please lead me in the right direction towards
> resolving the following network issue?
>
> I just added a FreeBSD server to a LAN that consists of a router
> and 2 pc's, one of which is running Windows XP Pro and the other
> Windows Vista. The lan is connected to the Internet via a cable
> modem that goes through the router. The router is set up to be the
> DHCP server. Now it is being assigned a non-unique IP address.
>
>  Before adding the FreeBSD box to the mix, everybody was getting
> along fine (unique IP addresses were dynamically assigned to the
> pc's).
>
> I connected the FreeBSD box to the router, selected "Configure
> additional network interfaces" from the sysinstall menu, selected
> "fxp0 Intel EtherExpress Pro/100B PCI Fast Ethernet card" from the
> top of the list and clicked "OK" to prompts to try to configure
> IPv6 and DCHP. When done, the Network Configuration dialog
> contained the following values (which I did not alter):
>
> Host: dhcppc0
> Domain: (the cable provider's domain name)
> IPv4 Gateway: 192.168.1.1
> Name server: (IP address of ISP's name server)
> Configuration for Interface fxp0:
> IPv4 Address: 192.168.1.33
> Netmask: 255.255.255.0
> Extra options: (blank)
>
> Note that the Host field does not match the hostname of the FreeBSD
> box, which is named "SERVER" (real creative, huh?). I guess I
> should have changed the Host field to "SERVER", eh?
>
> Then I got the following console messages on the FreeBSD server:
>
> 1) "Apr 25 13:33:19 SERVER kernel: arp 00:40:f4:47:fb:8e is using
> my IP address xxx.xxx.x.xx!" 2) "dhcppc0# Apr 25 14:07:05 dhcpp0
> kernel: arp: 00:40:f4:47:fb:8e is using my IP address
> xxx.xxx.x.xx!"
>
> I ran "ipconfig /all" on both Windows boxes and found that the
> FreeBSD box is assigned the same IP address as the Windows XP box
> (which had that IP address FIRST). Why is the FreeBSD box being
> assigned a non-unique IP address?

1. Check that your router's dhcp server is set up properly.

2. Check that the windows box is not set up with a static ip. The box 
could be hard coded to an ip address and your dhcp server thinks the 
lease is free.

Other than that you need to supply more info.

Beech

-- 
---
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Re: DHCP/NIC IP address contention issues

2007-04-25 Thread Daniel Marsh

On 4/26/07, L Goodwin <[EMAIL PROTECTED]> wrote:


Will someone please lead me in the right direction towards resolving the
following network issue?


1) "Apr 25 13:33:19 SERVER kernel: arp 00:40:f4:47:fb:8e is using my IP
address xxx.xxx.x.xx!"
2) "dhcppc0# Apr 25 14:07:05 dhcpp0 kernel: arp: 00:40:f4:47:fb:8e is
using my IP address xxx.xxx.x.xx!"

I ran "ipconfig /all" on both Windows boxes and found that the FreeBSD box
is assigned the same IP address as the Windows XP box (which had that IP
address FIRST). Why is the FreeBSD box being assigned a non-unique IP
address?



Have you checked the network properties (tcp-ip settings) for the XP machine
to make sure it's being assigned a dynamic IP address?
Have you tried running ipconfig /renew on the XP machine?
Have you checked the lease information in the DSL modem?

A DHCP server will not hand out the same IP address twice.
The only time I've seen something like this happen is when the DHCP lease
times out for an IP and windows doesn't renew the lease on the IP, the IP is
put into the free-ip's pool and handed out when the DHCP feels up to it...
So if the XP machine is setup for DHCP, it got the IP via dhcp, it probably
didn't renew the lease on the IP.
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DHCP/NIC IP address contention issues

2007-04-25 Thread L Goodwin
Will someone please lead me in the right direction towards resolving the 
following network issue?

I just added a FreeBSD server to a LAN that consists of a router and 2 pc's, 
one of which is running Windows XP Pro and the other Windows Vista. The lan is 
connected to the Internet via a cable modem that goes through the router.
The router is set up to be the DHCP server. Now it is being assigned a 
non-unique IP address.

 Before adding the FreeBSD box to the mix, everybody was getting along fine 
(unique IP addresses were dynamically assigned to the pc's).

I connected the FreeBSD box to the router, selected "Configure additional 
network interfaces" from the sysinstall menu, selected "fxp0 Intel EtherExpress 
Pro/100B PCI Fast Ethernet card" from the top of the list and clicked "OK" to 
prompts to try to configure IPv6 and DCHP. When done, the Network Configuration 
dialog contained the following values (which I did not alter):

Host: dhcppc0
Domain: (the cable provider's domain name)
IPv4 Gateway: 192.168.1.1
Name server: (IP address of ISP's name server)
Configuration for Interface fxp0:
IPv4 Address: 192.168.1.33
Netmask: 255.255.255.0
Extra options: (blank)

Note that the Host field does not match the hostname of the FreeBSD box, which 
is named "SERVER" (real creative, huh?). I guess I should have changed the Host 
field to "SERVER", eh?

Then I got the following console messages on the FreeBSD server:

1) "Apr 25 13:33:19 SERVER kernel: arp 00:40:f4:47:fb:8e is using my IP address 
xxx.xxx.x.xx!"
2) "dhcppc0# Apr 25 14:07:05 dhcpp0 kernel: arp: 00:40:f4:47:fb:8e is using my 
IP address xxx.xxx.x.xx!"

I ran "ipconfig /all" on both Windows boxes and found that the FreeBSD box is 
assigned the same IP address as the Windows XP box (which had that IP address 
FIRST). Why is the FreeBSD box being assigned a non-unique IP address?

Thanks!

   
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