Brocade Fabric OS Administrator's Guide Supporting Fabric OS v6.3.0 (53-1001336-02, November 2009)

262 Fabric OS Administrator’s Guide

53-1001336-02

iSCSI gateway service overview

FIGURE 35 Discovery domain set configuration example

Switch-to-iSCSI initiator authentication

iSCSI sessions are authenticated using CHAP (Challenge Handshake Authentication Protocol). The

iSCSI gateway service supports the following three strategies for CHAP authentication:

• One-way—Only the iSCSI VT authenticates the session.

• Mutual—Both the iSCSI initiator and the iSCSI VT authenticate the session.

• Binding user names - Specific user names can be bound to an iSCSI VT. Only those user names

can be used for authentication during iSCSI login.

NOTE

iSCSI gateway service does not support IPSec.

Load balancing through connection redirection

Connection redirection allows iSCSI sessions to be evenly distributed across ports on the same

blade. Before the maximum number of connections is reached for any given port, logins are

redirected to the next available port, resulting in an even distribution of sessions. This distribution

occurs only during the first login phase. Existing connections are not redistributed when iSCSI ports

change state from disabled to enabled or offline to online.

Connection redirection does not need to be committed as a configuration parameter. It is

independently enabled and disabled.

IP network

iS C S I gateway s ervic e

iS CS I v irtual targe ts (V Ts )

iS CS I in itia tor A

iS CS I in itia tor B

VT 1

VT 2

VT 3

DD1

DD2

DDS et 1