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Nice you figured out. Check the switch vlan tagging configuration. You need
to use the trunk mode in your switch.
Regards,
Razique
Le vendredi 30 novembre 2012, Ahmed Al-Mehdi a écrit :

> I resolved this issue.  The problem was the switch was dropping the DHCP
> request packet sent by the VM.  I verified using "tcpdump" that the packet
> was going out the physical ethernet port of the compute node.  However, the
> packet did not show up at the ethernet port of the controller node.  I
> verified the two ports are on the same (physical switch) VLAN. I then setup
> direct connect, bypassing the switch, and the VM was able to get a response
> to the DHCP request, etc.  Time permitting I will investigate why the
> switch was dropping the packet.
>
> Thanks to all who responded.
>
> Regards,
> Ahmed.
>
>
>
> On Wed, Nov 28, 2012 at 4:13 PM, Ahmed Al-Mehdi <ahmedalmehdi at gmail.com>wrote:
>
> Hi Razique,
>
> Thank you helping out.  Yes, I see an IP addr assigned to the instance.
>  And yes, I am using libvirt.
>
> root at novato:~/ahmed# nova list
>
> +--------------------------------------+-------+--------+-------------------------+
> | ID                                   | Name  | Status | Networks
>        |
>
> +--------------------------------------+-------+--------+-------------------------+
> | 26188c69-e67d-41b8-a066-6103b191fbea | myvm1 | ACTIVE |
> net_proj_one=10.10.10.3 |
>
> +--------------------------------------+-------+--------+-------------------------+
> root at novato:~/ahmed#
>
> I do not have the external network setup.  Is that necessary to get an IP
> address from the private network to which eth0 of the VM network is
> attached.
>
>
> From cirros log, it seem dhcp is enabled and started, but fails to get an
> IP addr:
>
> Starting network...
> udhcpc (v1.18.5) started
> Sending discover...
> Sending discover...
> Sending discover...
> No lease, failing
> WARN: /etc/rc3.d/S40-network failed
> cloud-setup: checking
> http://169.254.169.254/2009-04-04/meta-data/instance-id
> wget: can't connect to remote host (169.254.169.254): Network is
> unreachable
> cloud-setup: failed 1/30: up 10.00. request failed
> wget: can't connect to remote host (169.254.169.254): Network is
> unreachable
> cloud-setup: failed 2/30: up 11.02. request failed
> ...........
> wget: can't connect to remote host (169.254.169.254): Network is
> unreachable
> cloud-setup: failed 30/30: up 39.15. request failed
> cloud-setup: after 30 fails, debugging
> cloud-setup: running debug (30 tries reached)
> ############ debug start ##############
> ### /etc/rc.d/init.d/sshd start
> /etc/rc3.d/S45-cloud-setup: line 66: /etc/rc.d/init.d/sshd: not found
> route: fscanf
> ### ifconfig -a
> eth0      Link encap:Ethernet  HWaddr FA:16:3E:D9:8E:97
>           inet6 addr: fe80::f816:3eff:fed9:8e97/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:17 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:2062 (2.0 KiB)  TX bytes:1134 (1.1 KiB)
>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
>
> ### route -n
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface
> route: fscanf
> ### cat /etc/resolv.conf
> cat: can't open '/etc/resolv.conf': No such file or directory
> ### gateway not found
> /etc/rc3.d/S45-cloud-setup: line 66: can't open /etc/resolv.conf: no such
> file
> ### pinging nameservers
> ### uname -a
> Linux cirros 3.0.0-12-virtual #20-Ubuntu SMP Fri Oct 7 18:19:02 UTC 2011
> x86_64 GNU/Linux
> ### lsmod
> Module                  Size  Used by    Not tainted
> vfat                   17585  0
> fat                    61475  1 vfat
> isofs                  40253  0
> ip_tables              27473  0
> x_tables               29846  1 ip_tables
> pcnet32                42078  0
> 8139cp                 27412  0
> ne2k_pci               13691  0
> 8390                   18856  1 ne2k_pci
> e1000                 108573  0
> acpiphp                24080  0
> .....
>
>
>
> On Wed, Nov 28, 2012 at 3:44 PM, Razique Mahroua <razique.mahroua at gmail.
>
>

-- 
*Nuage & Co - Razique Mahroua*
razique.mahroua at gmail.com
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