Re: Unable to get ipv4 dhcp addr (new OSA)

[IronSphere by SecuriTeam Software]

I revised the ip status and decided to reinstall the image directly under
zPDT. I now have access using the virtual tap device on 10.1.1.x network. I
also has a static (can be dynamic) configured NIC on the driving system.
The manuals are quit clear on how to configure z/os TCPIP to use the second
OSA. THe real NIC has an IP address, but it is known to the Centos os and
it doesn;t forward it any any way to the SESE image. What I need is a clear
explanation how to define a NAT (or any other routing) from the driving
system (Centos 7) to the SLES 12 image running under zPDT. the real OSA
card acts like a router, so there is no problem, but I can't understand how
it work with zPDT.

Can someone shed some light on this?

ITschak

On Wed, Mar 1, 2017 at 10:45 PM, Mark Post  wrote:

> >>> On 2/28/2017 at 02:04 AM, Itschak Mugzach  wrote:
> > Hi Mark. Tcpdump taken on the virtual machine guest. Dhcp has no evidence
> > in log. Firewalla aee down both sides aa well aa iptables on centoa side.
>
> If you're not able to see any traffic on the host that is coming from the
> guest, then it sounds like something is wrong with the bridging of the
> network between the host and the guest.  That sounds more like a zPDT
> setup/configuration problem than anything.
>
> The last thing I would try is to manually configure the IP address and
> default route that the DHCP server would normally hand out, and see if you
> can ping the default gateway from the guest.  If that doesn't work, then
> the problem isn't in the Linux guest.
>
>
> Mark Post
>
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>



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ITschak Mugzach
*|** IronSphere Platform* *|** An IT GRC for Legacy systems* *| Automated
Security Readiness Reviews (SRR) **|*

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Re: Unable to get ipv4 dhcp addr (new OSA)

[Mark Post]

>>> On 2/28/2017 at 02:04 AM, Itschak Mugzach  wrote: 
> Hi Mark. Tcpdump taken on the virtual machine guest. Dhcp has no evidence
> in log. Firewalla aee down both sides aa well aa iptables on centoa side.

If you're not able to see any traffic on the host that is coming from the 
guest, then it sounds like something is wrong with the bridging of the network 
between the host and the guest.  That sounds more like a zPDT 
setup/configuration problem than anything.

The last thing I would try is to manually configure the IP address and default 
route that the DHCP server would normally hand out, and see if you can ping the 
default gateway from the guest.  If that doesn't work, then the problem isn't 
in the Linux guest.


Mark Post

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Re: Unable to get ipv4 dhcp addr (new OSA)

[Itschak Mugzach]

Hi Mark. Tcpdump taken on the virtual machine guest. Dhcp has no evidence
in log. Firewalla aee down both sides aa well aa iptables on centoa side.

ITschak

בתאריך 27 בפבר 2017 23:14,‏ "Mark Post"  כתב:

> >>> On 2/25/2017 at 12:24 PM, Itschak Mugzach 
> wrote:
> > OK. after trying to the original card, I still get the same proble.
> TCPDUMP
> > shows the following  msgs:
> > IP 0.0.0.0.BOOTPC > 255.255.255.255.bootps : BOOTP/DHCP request from
> 
> > (oui unknown) , length 300.
> >
> > it look like the response from the dhcp server is not arriving the linux
> > image. I tried to open the relevant udp ports on the driving system
> (centos
> > 7) with no help.
>
> Was tcpdump running on the Centos system, or the guest?  You really need
> to have it running on both ends of the connection.
>
>
> Mark Post
>
> --
> For LINUX-390 subscribe / signoff / archive access instructions,
> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or
> visit
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> http://wiki.linuxvm.org/
>

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Re: Unable to get ipv4 dhcp addr (new OSA)

[Mark Post]

>>> On 2/25/2017 at 12:24 PM, Itschak Mugzach  
>>> wrote: 
> OK. after trying to the original card, I still get the same proble. TCPDUMP
> shows the following  msgs:
> IP 0.0.0.0.BOOTPC > 255.255.255.255.bootps : BOOTP/DHCP request from 
> (oui unknown) , length 300.
> 
> it look like the response from the dhcp server is not arriving the linux
> image. I tried to open the relevant udp ports on the driving system (centos
> 7) with no help.

Was tcpdump running on the Centos system, or the guest?  You really need to 
have it running on both ends of the connection.


Mark Post

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Re: Unable to get ipv4 dhcp addr (new OSA)

[Itschak Mugzach]

These are emulated OSA devices. the hardware is a zPDT.

ITschak

On Wed, Feb 22, 2017 at 4:52 PM, Oscar R Quesada  wrote:

> What model of OSA do you have ? and did you get a manual with it ?
>
> Oscar R Quesada
> Senior Professional System Administrator – iDO NA POD1 – iEnhance1 Team
> Member
> CSC
>
> GIS Cell: +1-818-370-2579
> oques...@csc.com  www.csc.com
>   Texas USA
>
>
> This is a PRIVATE message. If you are not the intended recipient, please
> delete without copying and kindly advise us by e-mail of the mistake in
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> bind CSC to any order or other contract unless pursuant to explicit
> written agreement or government initiative expressly permitting the use of
> e-mail for such purpose.
>
>
>
> From:   Itschak Mugzach 
> To: LINUX-390@VM.MARIST.EDU
> Date:   02/22/2017 06:08 AM
> Subject:Unable to get ipv4 dhcp addr (new OSA)
> Sent by:Linux on 390 Port 
>
>
>
> Hi
>
> We replaced the Network adapters on our zPDT server and lost DHCP address
> of IPv4. Configuration:
>
>- The OSA cards now shown as OSD_1000.
>- Addresses are 0400..0402 and 0404..0406
>- Layer 2 is enabled on both.
>- Wicked is up.
>- State is UP (LAN ONLINE).
>- I tried to shut down network and run qeth_configure with no help.
>
> can one explain how to configure the OSA cards so they will obtain IPV4
> addresses?
>
>
> Tx.
> ITschak
>
>
> --
> ITschak Mugzach
> *|** IronSphere Platform* *|** An IT GRC for Legacy systems* *| Automated
> Security Readiness Reviews (SRR) **|*
>
> --
> For LINUX-390 subscribe / signoff / archive access instructions,
> send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or
> visit
> http://www.marist.edu/htbin/wlvindex?LINUX-390
> --
> For more information on Linux on System z, visit
> http://wiki.linuxvm.org/
>
>
>


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ITschak Mugzach
*|** IronSphere Platform* *|** An IT GRC for Legacy systems* *| Automated
Security Readiness Reviews (SRR) **|*

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Re: Unable to get ipv4 dhcp addr (new OSA)

[Oscar R Quesada]

What model of OSA do you have ? and did you get a manual with it ?

Oscar R Quesada
Senior Professional System Administrator – iDO NA POD1 – iEnhance1 Team 
Member
CSC

GIS Cell: +1-818-370-2579 
oques...@csc.com  www.csc.com
  Texas USA
  

This is a PRIVATE message. If you are not the intended recipient, please 
delete without copying and kindly advise us by e-mail of the mistake in 
delivery. NOTE: Regardless of content, this e-mail shall not operate to 
bind CSC to any order or other contract unless pursuant to explicit 
written agreement or government initiative expressly permitting the use of 
e-mail for such purpose.



From:   Itschak Mugzach 
To: LINUX-390@VM.MARIST.EDU
Date:   02/22/2017 06:08 AM
Subject:Unable to get ipv4 dhcp addr (new OSA)
Sent by:Linux on 390 Port 



Hi

We replaced the Network adapters on our zPDT server and lost DHCP address
of IPv4. Configuration:

   - The OSA cards now shown as OSD_1000.
   - Addresses are 0400..0402 and 0404..0406
   - Layer 2 is enabled on both.
   - Wicked is up.
   - State is UP (LAN ONLINE).
   - I tried to shut down network and run qeth_configure with no help.

can one explain how to configure the OSA cards so they will obtain IPV4
addresses?


Tx.
ITschak


--
ITschak Mugzach
*|** IronSphere Platform* *|** An IT GRC for Legacy systems* *| Automated
Security Readiness Reviews (SRR) **|*

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send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or 
visit
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