Congestion Control
117
Instruction Manual - NXA-ENET8-POE+
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.
The following table lists the options on this page:
Perform these steps to configure rate limits:
1.
Click
Traffic
>
Rate Limit
.
2.
Set the interface type to Port or Trunk.
3.
Enable the
Rate Limit Status
for the required interface.
4.
Set the rate limit for required interfaces.
5.
Click
Apply
.
Traffic - Rate Limit Options
Interface
Displays the switch's ports or trunks.
Type
Indicates the port type (1000BASE-T, 10GBASE SFP+, or 1000BASE SFP (used when the
transceiver type is used in an SFP+ port))
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; 64 - 10,000,000 kbits per
second for 10 Gigabit Ethernet ports)
Resolution
Indicates the resolution at which the rate can be configured.
FIG. 129
Configuring Rate Limits