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P
ORT
C
ONFIGURATION
3-91
•
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 3-92.
Note:
Auto-negotiation must be disabled before you can configure or
force the interface to use the Speed/Duplex Mode or Flow
Control options.
Summary of Contents for 6752AL2 - annexe 1
Page 2: ......
Page 22: ...TABLES xviii ...
Page 26: ...FIGURES xxii ...
Page 36: ...INTRODUCTION 1 10 ...
Page 502: ...TROUBLESHOOTING B 4 ...
Page 515: ......