UCS Auto-deploiement of the configuration using PXE and double vNIC

We are trying to set up Auto deploy blades UCS B200 M3.  Our facility has the chassis connected to double 6248 fabric interconnects.  We managed to get this to work when the blades have been identified by the MAC configured on the DHCP (Infoblox) server address.  However, in trying to solve the scenario of the tempting PXE server start using either NIC, thus having two MAC addresses, this scenario could not be supported on the DHCP server (mapping two MAC addresses to a single IP address).  Then we had the idea of using the GUID/UUID of the blade as a unique identifier, as it is the same regardless of the NETWORK card is used.

We tried to put in place, but were unsuccessful.  Blade sends its ' GUID by using the option DHCP 97, but the DHCP server is only looking for the customer ID via DHCP Option 61.  We have not been able to determine how, otherwise, the blade server can send its ' GUID via DHCP Option 61 and Infoblox tells us that their server may not be configured to accept the Option DHCP 97 as a customer identifier.

Someone has encountered this situation and it is resolved?  It is certainly not a unique situation, having a server blade with two network adapters.

Thanks in advance for your answer.

Ron Buchalski

That's why you need to select the 'hardware failover flag' in the definition of a vnic. If your vnic is attached to A fabric and a fails, you will automatically turn on to the B-fabric.

Tags: Cisco DataCenter

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