Switchport Packet-Rate - Supermicro SSE-G2252 User Manual

SSE-G2252/SSE-G2252P Switches User's Manual

switchport packet-rate

This command configures broadcast, multicast and unknown unicast storm control. Use
the no form to restore the default setting.
Syntax
switchport {broadcast | multicast | unicast} packet-rate rate
no switchport {broadcast | multicast | unicast}
broadcast - Specifies storm control for broadcast traffic.
multicast - Specifies storm control for multicast traffic.
unicast - Specifies storm control for unknown unicast traffic.
rate - Threshold level as a rate; i.e., kilobits per second. (Range: 64-100000 Kbps
for Fast Ethernet ports, 64-1000000 Kbps for Gigabit Ethernet ports)
Default Setting
Broadcast Storm Control: Disabled
Multicast Storm Control: Disabled
Unknown Unicast Storm Control: Disabled
Command Mode
Interface Configuration (Ethernet)
Command Usage
• When traffic exceeds the threshold specified for broadcast and multicast or
unknown unicast traffic, packets exceeding the threshold are dropped until the rate
falls back down beneath the threshold.
• Traffic storms can be controlled at the hardware level using this command or at the
software level using the
control types can be applied to a port. Enabling hardware-level storm control on a
port will disable automatic storm control on that port.
• The rate limits set by this command are also used by automatic storm control when
the control response is set to rate limiting by the
command.
• Using both rate limiting and storm control on the same interface may lead to
unexpected results. For example, suppose broadcast storm control is set to 500
Kbps by the command "switchport broadcast packet-rate 500," and the rate limit is
set to 20000 Kbps by the command "rate-limit input 20000" on a Fast Ethernet port.
Since 20000 Kbps is 1/5 of line speed (100 Mbps), the received rate will actually be
100 Kbps, or 1/5 of the 500 Kbps limit set by the storm control command. It is
therefore not advisable to use both of these commands on the same interface.
auto-traffic-control command. However, only one of these
27-12
auto-traffic-control action