Filter
Top Products
Configuring the Switch
3-92
3
• Flow Control – Allows automatic or manual selection of flow control.
• 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.
- 10half - Supports 10 Mbps half-duplex operation
- 10full - Supports 10 Mbps full-duplex operation
- 100half - Supports 100 Mbps half-duplex operation
- 100full - Supports 100 Mbps full-duplex operation
- 1000full - Supports 1000 Mbps full-duplex operation
- Sym (Gigabit only) - Check this item to transmit and receive pause frames, or
clear it to auto-negotiate the sender and receiver for asymmetric pause frames.
(The current switch chip only supports symmetric pause frames.)
- FC - Supports flow control
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 802.3x for full-duplex
operation. (Avoid using flow control on a port connected to a hub unless it is
actually required to solve a problem. Otherwise back pressure jamming signals
may degrade overall performance for the segment attached to the hub.)
(Default: Autonegotiation enabled; Advertised capabilities for 100BASE-TX –
10half, 10full, 100half, 100full; 1000BASE-T – 10half, 10full, 100half, 100full,
1000full; 1000BASE-SX/LX/LH – 1000full)
• Trunk – Indicates if a port is a member of a trunk. To create trunks and select port
members, see “Creating Trunk Groups” on page 3-93.
Note:
Auto-negotiation must be disabled before you can configure or force the interface
to use the Speed/Duplex Mode or Flow Control options.
Web – Click Port, Port Configuration or Trunk Configuration. Modify the required
interface settings, and click Apply.
Figure 3-54 Port/Trunk Configuration