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Command Line Interface
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4
Example
The following example disables port 5.
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 for 100 Mbps ports, 64-1000000 for 1 Gbps ports)
Default Setting
Broadcast Storm Control: Enabled, packet-rate limit: 64 kbps
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.
• Due to an ASIC chip limitation, the supported storm control modes include:
- broadcast
- bro multicast
- bro mul unknown unicast
This means that when multicast storm control is enabled, broadcast storm
control is also enabled (using the threshold value set by the multicast storm
control command). And when unknown unicast storm control is enabled,
broadcast and multicast storm control are also enabled (using the threshold
value set by the unknown unicast storm control command).
• Traffic storms can be controlled at the hardware level using this command or
at the software level using the
auto-traffic-control
command (page 4-238).
However, only one of these control types can be applied to a port. Enabling
hardware-level storm control on a port will disable automatic storm control on
that port.
Console(config)#interface ethernet 1/5
Console(config-if)#shutdown
Console(config-if)#
Summary of Contents for 6152PL2 FICHE
Page 2: ......
Page 6: ...vi ...
Page 8: ...viii ...
Page 32: ...Tables xxxii ...
Page 38: ...Figures xxxviii ...
Page 56: ...Initial Configuration 2 10 2 ...
Page 378: ...Configuring the Switch 3 322 3 ...
Page 817: ......