About Dhchap Authentication Modes; Configuring The Dhchap Mode - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

About DHCHAP Authentication Modes

About DHCHAP Authentication Modes
The DHCHAP authentication status for each interface depends on the configured DHCHAP port mode.
When the DHCHAP feature is enabled in a switch, each Fibre Channel interface or FCIP interface may be
configured to be in one of four DHCHAP port modes:
• On—During switch initialization, if the connecting device supports DHCHAP authentication, the software
• Auto-Active—During switch initialization, if the connecting device supports DHCHAP authentication,
• Auto-Passive (default)—The switch does not initiate DHCHAP authentication, but participates in
• Off—The switch does not support DHCHAP authentication. Authentication messages sent to ports in
Whenever DHCHAP port mode is changed to a mode other than the Off mode, reauthentication is
Note
performed.
The following table identifies switch-to-switch authentication between two Cisco switches in various modes.
Table 89: DHCHAP Authentication Status Between Two MDS Switches
Switch N
DHCHAP
Modes
on
auto-Active
auto-Passive
off

Configuring the DHCHAP Mode

To configure the DHCHAP mode for a particular interface, perform this task:
Procedure
Step 1
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
628
performs the authentication sequence. If the connecting device does not support DHCHAP authentication,
the link is placed in an isolated state.
the software performs the authentication sequence. If the connecting device does not support DHCHAP
authentication, the software continues with the rest of the initialization sequence.
DHCHAP authentication if the connecting device initiates DHCHAP authentication.
this mode return error messages to the initiating switch.
Switch 1 DHCHAP Modes
on
FC-SP authentication
is performed.
Link is brought down.
Command or Action
switch# configuration terminal
auto-active auto-passive
FC-SP authentication FC-SP authentication
is performed. is performed.
FC-SP authentication
is not performed.
FC-SP authentication is not performed.
Purpose
Enters configuration mode.
Configuring FC-SP and DHCHAP
off
Link is brought down.
FC-SP authentication
is not performed.
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