Changing The Gbps Fiber Negotiation Mode - Dell PowerConnect B-FCXs Configuration Manual

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Configuring basic port parameters
Chassis-based and Stackable devices
NOTE
The following procedure applies to Stackable devices and to Chassis-based 100/1000 Fiber
interface modules only. The CLI syntax for enabling and disabling 100BaseFX support on these
devices differs than on a Compact device. Make sure you refer to the appropriate procedures.
PowerConnect devices support the following types of SFPs for 100BaseFX:
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•
•
•
NOTE
Connect the 100BaseFX fiber transceiver after configuring both sides of the link. Otherwise, the
link could become unstable, fluctuating between up and down states.
To enable support for 100BaseFX on an fiber port or on a Stackable switch, enter commands such
as the following.
PowerConnect(config)# interface ethernet 1/6
PowerConnect(config-if-1/6)# 100-fx
The above commands enable 100BaseFX on port 6 in slot 1.
Syntax: [no] 100-fx
To disable 100BaseFX support on a fiber port, enter the no form of the command. Note that you
must disable 100BaseFX support before inserting a different type of module In the same port.
Otherwise, the device will not recognize traffic traversing the port.

Changing the Gbps fiber negotiation mode

The globally configured Gbps negotiation mode is the default mode for all Gbps fiber ports. You
can override the globally configured default and set individual ports to the following:
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•
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To change the mode for individual ports, enter commands such as the following.
PowerConnect(config)# interface ethernet 1 to 4
PowerConnect(config-mif-1-4)# gig-default auto-gig
This command overrides the global setting and sets the negotiation mode to auto-Gbps for ports 1
– 4.
Syntax: gig-default neg-full-auto | auto-gig | neg-off
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Multimode SFP – maximum distance is 2 kilometers
Bidirectional single mode SFP – maximum distance is 10 kilometers
Long Reach (LR) – maximum distance is 40 kilometers
Intermediate Reach (IR) – maximum distance is 15 kilometers
Negotiate-full-auto – The port first tries to perform a handshake with the other port to
exchange capability information. If the other port does not respond to the handshake attempt,
the port uses the manually configured configuration information (or the defaults if an
administrator has not set the information). This is the default.
Auto-Gbps – The port tries to perform a handshake with the other port to exchange capability
information.
Negotiation-off – The port does not try to perform a handshake. Instead, the port uses
configuration information manually configured by an administrator.
PowerConnect B-Series FCX Configuration Guide
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