Cisco SG300 VLAN rate-limit

Question

I have a Cisco SG300 small business switch and 541 APs. There are 2 VLANs in our network. One must be limited by bandwidth. Does anyone have an idea for configure vlan rate-limiting on SG300? And please describe CIR & CBS for me. Thanks.

Answer 1

http://www.cisco.com/en/US/partner/products/ps10898/prod_command_reference_list.html
Cisco Small Business 300 Series Managed Switches Command Line Interface Guide Release 1.3
Select CIR and CBS according to your design. You can use a larger CBS when performance is not ideal.
49.23 rate-limit (VLAN)
Use the Layer 2 rate-limit (VLAN) Global Configuration mode command to limit the
incoming traffic rate for a VLAN. Use the no form of this command to disable the
rate limit.
Syntax
rate-limit vlan-id committed-rate committed-burst
no rate-limit vlan
Parameters
• vlan-id—Specifies the VLAN ID.
• committed-rate—Specifies the average traffic rate (CIR) in kbits per second
(kbps). (Range: 3-57982058)
• committed-burst—Specifies the maximum burst size (CBS) in bytes.
(Range: 3000-19173960)
Default Configuration
Rate limiting is disabled.
Committed-burst-bytes is 128K.
Command Mode
Global Configuration mode
User Guidelines
Traffic policing in a policy map takes precedence over VLAN rate limiting. If a
packet is subject to traffic policing in a policy map and is associated with a VLAN
that is rate limited, the packet is counted only in the traffic policing of the policy
map.
This command does not work in Layer 3 mode. It does not work in conjunction with
IP Source Guard.
Example
The following example limits the rate on VLAN 11 to 150000 kbps or the normal
burst size to 9600 bytes.
switchxxxxxx(config)# rate-limit 11 150000 9600