we have a m1000e blade center with m630 blades.
Each of them is equipped with Integrated NIC: Intel Ethernet 10G 2P X520-k bNDC
the blade center chassis has two MXL switches in a stack. The iSCSI uplink ports are connected to ToR switch stack over LAG. The ToR stack consist of two Dell N4032F switches.
PS6210 storage array is connected to these ToR switches.
The MXL switches will have both LAN and iSCSI traffic, therefore I was looking into option to allow DCB.
Are there any steps to allow iSCSI over DCB?
Does this NIC support iSCSI priority TLVs at all?
a) host runs ESXi 5.5
b) I didn't find Intel cards in Dell Storage compatibility Matrix for iSCSI over DCB.
c) what is shown on MXL-stack port towards blade server:
MXL-stack# show interfaces te0/1 pfc detail
Interface TenGigabitEthernet 0/1
Admin mode is on
Admin is enabled
Remote is disabled
Local is enabled, Priority list is 4
Oper status is internally propagated
PFC DCBX Oper status is Down
Reason: Waiting for Peer
State Machine Type is Symmetric
TLV Tx Status is enabled
PFC Link Delay 65535 pause quntams
Application Priority TLV Parameters :
FCOE TLV Tx Status is enabled
ISCSI TLV Tx Status is enabled
Local FCOE PriorityMap is 0x8
Local ISCSI PriorityMap is 0x10
0 Input TLV pkts, 26199 Output TLV pkts, 0 Error pkts, 0 Pause Tx pkts, 0 Pause Rx pkts
0 Input Appln Priority TLV pkts, 0 Output Appln Priority TLV pkts, 0 Error Appln Priority TLV Pkts
dell storage compatibility matrix 2015:
EqualLogic SAN over DCB Solution for VMware ESXi 5.1 (2044431)
Based on the above KB article the steps (on a host Converged Network Adapter side) should be:
- Enable iSCSI Offload or iSCSI HBA mode.
- Select DCB Willing or Accept DCB Settings from Switch (or similar setting) to enable DCB willing mode.
- Install appropriate iSCSI Offload/HBA VMware drivers provided by the vendor and located on the http://www.vmware.com/resources/compatibility/search.php VMware Hardware Compatibility List.
I was searching the NIC firmware options during boot for enabling DCB or iSCSI offload, unfortunately I couldn't find any of them.