On 12/28/11 3:28 PM, Bryce T Pier wrote:
Our new design for RHEL KVM hosts involves VLAN tagging all possible VLANs
to every server port and using LACP with dual 10Gb links to Cisco Nexus
switches. Although everything in this configuration works once the OS is
installed and configured, PXE booting the physical server for initial
install is failing.
We have the native VLAN on the switch port set to the VLAN/subnet that the
DHCP/PXE server resides on but the DHCP requests never seem to hit the PXE
server. The switch ports are set for LACP/port-channel and we're trying to
use the first of these 2 links to PXE boot.
Do you see the DHCP request show up on the DHCP server doing a tcpdump?
If you boot into RHEL rescue mode from a DVD, can you get a DHCP
address? So you trying to PXE off a switch interface that is configured
for 802.3ad?
My thoughts:
- the DHCP request could be hitting the server, just not on the
interface you expect
- not sure trying to PXE boot off a link that is configured for
802.3ad on the switch will work, as the you have to configure the bonded
device in RHEL before the switch activates the bonded interface(s). If
this works, let me know :)
Cheers,
Brian
I feel like we're missing something in the switch/port config but I'm not
familiar enough with advanced network configurations to know. Our network
guys think they've got everything set correctly but they haven't done
anything like this before either.
Is anyone successfully using this configuration and PXE booting? If so,
would you mind sharing your port configuration or other bits of wisdom?
Thanks,
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