SMC Networks SMC TigerStack III SMC6824M Management Manual page 174

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ONFIGURING THE
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) - When specified, the port transmits and receives
pause frames; when not specified, the port will auto-negotiate to
determine 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;
100BASE-FX – 100full
• Trunk – Indicates if a port is a member of a trunk. To create trunks and
select port members, see "Creating Trunk Groups" on page 3-120.
Note: Autonegotiation must be disabled before you can configure or
force the interface to use the Speed/Duplex Mode or Flow
Control options.
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WITCH