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Cisco SFS 7000 Series Product Family Command Reference Guide
OL-9163-02
Chapter 2 Administrative Commands
auto-negotiate
auto-negotiate
To configure your Server Switch to
• dynamically determine the connection speed of direct-attached Fibre Channel devices,
• dynamically determine the connection speed of direct-attached Ethernet devices,
• dynamically determine the connection speed of direct-attached InfiniBand devices,
enter the
auto-negotiate
command in the appropriate Interface Configuration submode. To disable
auto-negotiation, use the
no
form of this command.
auto-negotiate
no auto-negotiate
Syntax Description This command has no arguments or keywords
Defaults Fibre Channel and Ethernet ports auto-negotiate connection speeds by default.
Command Modes Fibre Channel Interface Configuration (config-if-fc) submode, Ethernet Interface Configuration
(config-if-ether) submode, InfiniBand Interface Configuration (config-if-ib) submode.
Usage Guidelines
Platform Availability:
Cisco SFS 3001, Cisco SFS 7000, Cisco SFS 7008, Cisco SFS 3012, Cisco 4x InfiniBand Switch Module
for IBM BladeCenter
Privilege Level:
Fibre Channel read-write user (for FC ports), Ethernet read-write user (for Ethernet ports), InfiniBand
read-write user (for InfiniBand ports).
Fibre Channel:
Before you configure your FC port to auto-negotiate speed, follow these steps to verify that the attached
Fibre Channel device supports auto-negotiation:
Step 1 Enter the
show interface fc
command in User Exec mode or Privileged Exec mode.
Step 2 Verify that the auto-negotiate-supported field of the command output displays yes. If the field displays
no, you must manually configure the connection speed of the port.
Note If you disable auto-negotiation in the CLI but leave it active on the attached Fibre Channel devices, the
port manager for the Fibre Channel interface on your device does not negotiate speed and mode with the
FC devices. The FC devices may choose a different duplex setting than the port manager and produce
unexpected results.