Accton Technology ES4710BD - Manual (Page 165)

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E ES4710BD 10 Slots L2/L3/L4 Chassis Switch
7.2.1.2.9 rate-suppression
Command: rate-suppression {dlf | broadcast | multicast}
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 rate-suppression” 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. stands for the number of packets allowed to
pass through per second for non-10Gb ports. For 10 Gb ports, the number of packets allowed to pass
through multiplies 1,040. The valid range for both port types is 1 to 262,143.
Command mode: Interface 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 abovementioned 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 3, this means allow 3,120
packets per second and discard the rest for 10Gb ports. However, the same setting for non-10Gb
ports means to allow 3 broadcast packets per second and discard the rest.
Example: Setting ports 8 – 10 (1000Mbps) of slot 2 to allow 3 broadcast packets per second.
Switch(Config)#interface ethernet 2/8-10
Switch(Config-Port-Range)#rate-suppression broadcast 3
7.2.1.2.10 shutdown
Command: shutdown
no shutdown
Function: Shuts down the specified Ethernet port; the “no shutdown” command opens the port.
Command mode: Interface Mode
Default: Ethernet port is open by default.
Usage Guide: When Ethernet port is shut down, no data frames are sent in the port, and the port
status displayed when the user types the “show interface” command is “down”.
Example: Opening ports 1/1-8.
Switch(Config)#interface ethernet1/1-8
Switch(Config-Port-Range)#no shutdown