Netgear M4300-52G (GSM4352S) - Stackable Managed Switch with 48x1G and 4x10G including 2x10GBASE-T and 2xSFP+ Layer 3 软件指南
Switching Commands
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M4200 and M4300 Series ProSAFE Managed Switches
Storm-Control Commands
This section describes commands you use to configure storm-control and view storm-control
configuration information. A traffic storm is a condition that occurs when incoming packets
flood the LAN, which creates performance degradation in the network. The Storm-Control
feature protects against this condition.
configuration information. A traffic storm is a condition that occurs when incoming packets
flood the LAN, which creates performance degradation in the network. The Storm-Control
feature protects against this condition.
The switch provides broadcast, multicast, and unicast story recovery for individual interfaces.
Unicast Storm-Control protects against traffic whose MAC addresses are not known by the
system. For broadcast, multicast, and unicast storm-control, if the rate of traffic ingressing on
an interface increases beyond the configured threshold for that type, the traffic is dropped.
Unicast Storm-Control protects against traffic whose MAC addresses are not known by the
system. For broadcast, multicast, and unicast storm-control, if the rate of traffic ingressing on
an interface increases beyond the configured threshold for that type, the traffic is dropped.
To configure storm-control, you will enable the feature for all interfaces or for individual
interfaces, and you will set the threshold (storm-control level) beyond which the broadcast,
multicast, or unicast traffic will be dropped. The Storm-Control feature allows you to limit the
rate of specific types of packets through the switch on a per-port, per-type, basis.
interfaces, and you will set the threshold (storm-control level) beyond which the broadcast,
multicast, or unicast traffic will be dropped. The Storm-Control feature allows you to limit the
rate of specific types of packets through the switch on a per-port, per-type, basis.
Configuring a storm-control level also enables that form of storm-control. Disabling a
storm-control level (using the no version of the command) sets the storm-control level back to
the default value and disables that form of storm-control. Using the no version of a
storm-control command (not stating a level) disables that form of storm-control but maintains
the configured level (to be active the next time that form of storm-control is enabled.)
storm-control level (using the no version of the command) sets the storm-control level back to
the default value and disables that form of storm-control. Using the no version of a
storm-control command (not stating a level) disables that form of storm-control but maintains
the configured level (to be active the next time that form of storm-control is enabled.)
Note:
The actual rate of ingress traffic required to activate storm-control is
based on the size of incoming packets and the hard-coded average
packet size of 512 bytes - used to calculate a packet-per-second
(pps) rate - as the forwarding-plane requires pps versus an absolute
rate kbps. For example, if the configured limit is 10 percent, this is
converted to ~25000 pps, and this pps limit is set in forwarding plane
(hardware). You get the approximate desired output when 512bytes
packets are used.
based on the size of incoming packets and the hard-coded average
packet size of 512 bytes - used to calculate a packet-per-second
(pps) rate - as the forwarding-plane requires pps versus an absolute
rate kbps. For example, if the configured limit is 10 percent, this is
converted to ~25000 pps, and this pps limit is set in forwarding plane
(hardware). You get the approximate desired output when 512bytes
packets are used.
storm-control broadcast
Use this command to enable broadcast storm recovery mode for all interfaces (Global Config
mode) or one or more interfaces (Interface Config mode). If the mode is enabled, broadcast
storm recovery is active and, if the rate of L2 broadcast traffic ingressing on an interface
increases beyond the configured threshold, the traffic will be dropped. Therefore, the rate of
broadcast traffic will be limited to the configured threshold.
mode) or one or more interfaces (Interface Config mode). If the mode is enabled, broadcast
storm recovery is active and, if the rate of L2 broadcast traffic ingressing on an interface
increases beyond the configured threshold, the traffic will be dropped. Therefore, the rate of
broadcast traffic will be limited to the configured threshold.
Default
disabled
Format
storm-control broadcast
Mode
Global Config
Interface Config