Setup Guide

Appendix: NIC Enumeration in Citrix XenServer 39

Appendix: NIC Enumeration in Citrix

XenServer

NIC enumeration involves mapping of the physical network interface to the ethX

device name in XenServer. The NIC enumeration is based on the device position

in the system. The integrated LAN on Motherboard (LOM) ports are always

enumerated first in order of their physical marked position (GB1, GB2, and so

on). The add-in network cards are enumerated after the LOM ports in ascending

order of the slot position and the PCI bus, device or function information.

For example, if there are two LOM ports in a system and one dual port

network adapter in the PCI slot 4, the NIC enumeration is as follows:

•

eth0

: LOM Port 1 (Gb1)

•

eth1

: LOM Port 2 (Gb2)

•

eth2

and

eth3

: ports on adapter in slot 4 (arranged in ascending bus,

device or function number)

You can find the NIC enumeration and corresponding position in the

system by logging in to the XenServer local console shell and running the

following command:

# biosdevname -d

The output of the command must be similar to the one below:

BIOS device: eth0

Kernel name: eth0

Permanant MAC: 00:1E:4F:1F:77:67

Assigned MAC : 00:1E:4F:1F:77:67

Driver: bnx2

Driver version: 1.6.7b

Firmware version: 3.5.12 UMP 1.1.8

Bus Info: 0000:03:00.0