3Com Switch 4800G PWR 24-Port, Руководство по настройке

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Only ports on the front panel of the device support the auto-negotiation speed configuration feature.
And ports on the extended interface card do not support this feature currently.
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After you configure auto-negotiation speed(s) for a port, if you execute the undo speed command
or the speed auto command, the auto-negotiation speed setting of the port restores to the default
setting.
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The effect of executing speed auto 10 100 1000 equals to that of executing speed auto , that is,
the port is configured to support all the auto-negotiation speeds: 10 Mbps, 100 Mbps, and 1000
Mbps.
Limiting Traffic on individual Ports
By performing the following configurations, you can limit the incoming broadcast traffic on individual
ports. When a type of incoming traffic exceeds the threshold you set, the system drops the packets
exceeding the traffic limit to reduce the traffic ratio of this type to the reasonable range, so as to keep
normal network service.
Follow these steps to limit traffic on port:
To do... Use the command... Remarks
Enter system view system-view —
Limit broadcast traffic received
on each port broadcast-suppression { ratio
| pps max-pps }
Optional
By default, the switch does not
suppress broadcast traffic.
Enter Ethernet port view
interface interface-type
interface-number
—
Limit broadcast traffic received
on the current port broadcast-suppression { ratio
| pps max-pps }
Optional
By default, the switch does not
suppress broadcast traffic.
Enabling Flow Control on a Port
Flow control is enabled on both the local and peer switches. If congestion occurs on the local switch:
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The local switch sends a message to notify the peer switch of stopping sending packets to itself or
reducing the sending rate temporarily.
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The peer switch will stop sending packets to the local switch or reduce the sending rate temporarily
when it receives the message; and vice versa. By this way, packet loss is avoided and the network
service operates normally.
Follow these steps to enable flow control on a port:
To do... Use the command... Remarks
Enter system view system-view —
Enter Ethernet port view
interface interface-type
interface-number
—