Configuring the Switch
3-78
3
(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 press ure jamming signals
may degrade overall performance for the segment attached to the hub.)
(Default: Autonegotiation enabled; Advertised capabilities for 1000BASE-T –
10half, 10full, 100half, 100full, 1000full; 1000BASE-SX/LX/LH – 1000full)
•Forced Mode – Shows the forced/preferred port type to use for the combination
ports
21-24.
-Copper-Forced - Always uses the built-in RJ-45 port.
-
Copper-Preferred-Auto
- Uses the built-in RJ-45 port if both combination types
are functioning and the RJ-45 port has a valid link.
-
SFP-Forced
- Always uses the SFP port (even if module is not installed).
-
SFP-Preferred-Auto
- Uses SFP port if both combination types are functioning
and the SFP port has a valid link.
•Trunk – Indicates if a port is a member of a trunk. To create trunks and select port
members, see “Creating Trunk Groups” on page 3-79.
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 3-41. Port Configuration