LevelOne GEL-5261, User Manual

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Congestion Control
The switch can set the maximum upload or download data transfer rate for any
port. It can also control traffic storms by setting a maximum threshold for broadcast
traffic or multicast traffic. It can also set bounding thresholds for broadcast and
multicast storms which can be used to automatically trigger rate limits or to shut
down a port.
Congestion Control includes following options:
◆ Rate Limiting – Sets the input and output rate limits for a port.
◆ Storm Control – Sets the traffic storm threshold for each interface.
Rate Limiting
Use the Traffic > Rate Limit page to apply rate limiting to ingress or egress ports.
This function allows the network manager to control the maximum rate for traffic
received or transmitted on an interface. Rate limiting is configured on interfaces at
the edge of a network to limit traffic into or out of the network. Packets that exceed
the acceptable amount of traffic are dropped.
Rate limiting can be applied to individual ports or trunks. When an interface is
configured with this feature, the traffic rate will be monitored by the hardware to
verify conformity. Non-conforming traffic is dropped, conforming traffic is
forwarded without any changes.
Parameters
These parameters are displayed:
◆
Interface – Displays the switch’s ports or trunks.
◆
Type – Indicates the port type. (1000BASE-T, 1000BASE SFP)
◆
Status – Enables or disables the rate limit. (Default: Disabled)
◆ Rate – Sets the rate limit level.
(Range: 64 - 1,000,000 kbits per second for Gigabit Ethernet ports
◆ Resolution – The resolution at which the rate can be configured is 16 kbits/sec