FoxGate S6124, Руководство по управлению

Страница: 82 / 391

82
Usage Guide: There are two modes that can respond up/down event of the port. The
interrupt mode means that interrupt hardware to announce the up/down change, the poll
mode means that software poll can obtain the port event, the first mode is rapid. If using
poll mode, the convergence time of MRPP is several hundred milliseconds, if using
interrupt mode, the convergence time is less than 50 milliseconds.
Notice: The scan mode of the port usually configured as poll mode, the interrupt mode is
only used to the environment of the good performance, but the security of the poll mode is
better.
Example: Configure the scan mode of the port as interrupt mode.
Switch(config)#port-scan-mode interrupt
3.1.11 rate-suppression
Command: rate-suppression {dlf | broadcast | multicast} <Kbits>
no rate-suppression {dlf | broadcast | multicast}
Function: Sets the traffic limit for broadcasts, multicasts and unknown destination
unicasts on all ports in the switch; the no command disables this traffic throttle function on
all ports in the switch, i.e., enables broadcasts, multicasts and unknown destination
unicasts to pass through the switch at line speed.
Parameters: use dlf to limit unicast traffic for unknown destination; multicast to limit
multicast traffic; broadcast to limit broadcast traffic. <Kbits> means the number of packets
allowed to pass per second, the ranging from 1 to 1000000.
Command mode: Port Mode.
Default: No limit is set by default. So, broadcasts, multicasts and unknown destination
unicasts are allowed to pass at line speed.
Usage Guide: All ports in the switch belong to a same broadcast domain if no VLAN has
been set. The switch will send the above mentioned three traffics to all ports in the
broadcast domain, which may result in broadcast storm and so may greatly degrade the
switch performance. Enabling Broadcast Storm Control can better protect the switch from
broadcast storm. Note the difference of this command in 10Gb ports and other ports. If the
allowed traffic is set to 1000kbps, this means allow 1000 kbit per second and suppress the
rest.
Example: Setting ports 1-8 allow 1000kbit broadcast packets per second.
Switch(config-if-port-range)#rate-suppression broadcast 1000
3.1.12 rate-violation