Configuring A Fibre-Channel Over Ethernet Interface; Scanning Storage Interconnects - Red Hat ENTERPRISE LINUX 5.5 - ONLINE STORAGE GUIDE Manual

Hide thumbs Also See for ENTERPRISE LINUX 5.5 - ONLINE STORAGE GUIDE:

Table of Contents

Online Storage Guide

8. Configuring a Fibre-Channel Over Ethernet Interface

Setting up and deploying a Fibre-channel over ethernet (FCoE) interface requires two packages:

• fcoe-utils

• dcbd

Once these packages are installed, perform the following procedure to enable FCoE over a virtual

LAN (VLAN):

Procedure 3. Configuring an ethernet interface to use FCoE

Configure a new VLAN (101) by creating a new network script for it. The easiest way to do so is to

copy the network script of an ethernet interface (eth3) to a new one with the 101 file name suffix,

as in:

cp /etc/sysconfig/network-scripts/ifcfg-eth3 /etc/sysconfig/network-

scripts/ifcfg-eth3.101

Open /etc/sysconfig/network-scripts/ifcfg-eth3.101. Edit it to ensure that the

following settings are configured accordingly:

DEVICE=eth3.101

VLAN=yes

ONBOOT=yes

Start the data center bridging daemon (dcbd) using the following command:

/etc/init.d/dcbd start

Use the dcbtool utility to enable data center bridging and FCoE on the ethernet interface using

the following commands:

dcbtool sc eth3 dcb on

dcbtool sc eth3 app:fcoe e:1

These commands will only work if no other changes have been made to the dcbd settings for the

ethernet interface.

Start FCoE using the command /etc/init.d/fcoe start. The fibre-channel device should

appear shortly, assuming all other settings on the fabric are correct.

After correctly configuring the ethernet interface to use FCoE, Red Hat recommends that set FCoE

and dcbd to run at startup. To do so, use chkconfig, as in:

chkconfig dcbd on

chkconfig fcoe on

There are several commands available that allow you to reset and/or scan one or more interconnects,

potentially adding and removing multiple devices in one operation. This type of scan can be disruptive,

as it can cause delays while I/O operations timeout, and remove devices unexpectedly. As such,

Table of Contents