Chapter 4
| Interface Configuration
Port Configuration
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mode, or flow control under auto-negotiation, the required operation modes
must be specified in the capabilities list for an interface.
◆ The 1000BASE-T standard does not support forced mode. Auto-negotiation
should always be used to establish a connection over any 1000BASE-T port or
trunk. If not used, the success of the link process cannot be guaranteed when
connecting to other types of switches.
◆ The Speed/Duplex mode is fixed at 1000full on the Gigabit SFP ports. When
auto-negotiation is enabled, the only attributes which can be advertised
include flow control and symmetric pause frames.
Parameters
These parameters are displayed:
◆ Port – Port identifier. (Range: 1-12/28)
◆ Type – Indicates the port type. (1000BASE-T, 1000BASE SFP)
◆ Name – Allows you to label an interface. (Range: 1-64 characters)
◆ Admin – Allows you to manually disable an interface. You can disable an
interface due to abnormal behavior (e.g., excessive collisions), and then re-
enable it after the problem has been resolved. You may also disable an
interface for security reasons.
◆ Autonegotiation (Port Capabilities) – Allows auto-negotiation to be enabled/
disabled. When auto-negotiation is enabled, you need to specify the
capabilities to be advertised. When auto-negotiation is disabled, you can force
the settings for speed, mode, and flow control.The following capabilities are
supported.
■
10h - Supports 10 Mbps half-duplex operation
■
10f - Supports 10 Mbps full-duplex operation
■
100h - Supports 100 Mbps half-duplex operation
■
100f - Supports 100 Mbps full-duplex operation
■
1000f - Supports 1000 Mbps full-duplex operation
■
Sym (Gigabit only) - Check this item to transmit and receive pause frames.
■
FC - Flow control can eliminate frame loss by “blocking” traffic from end
stations or segments connected directly to the switch when its buffers fill.
When enabled, back pressure is used for half-duplex operation and IEEE
802.3-2005 (formally IEEE 802.3x) for full-duplex operation.
Default: Autonegotiation enabled; Advertised capabilities for
1000BASE-T – 10half, 10full, 100half, 100full, 1000full;
1000Base-SX/LX/LH – 1000full
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