MSM7xx Controllers Configuration Guide v6.4.0

Data rate limits
These settings enable you to limit the total incoming or outgoing data rate on the Internet network
profile (MSM720) or Internet port (all other controllers). If traffic exceeds the rate you set for short
bursts, it is buffered. Long overages will result in data being dropped.
To utilize the full available bandwidth, the Maximum transmit rate and Maximum receive rate
should be set to match the incoming and outgoing data rates supported by the connection
established on the Internet port.
Bandwidth levels
The controller provides four levels of traffic priority that you can use to manage traffic flow: Very
High, High, Normal, and Low. The settings for each level are customizable, allowing performance
to be tailored to meet a wide variety of scenarios.
Assigning traffic to a bandwidth level
Traffic can be assigned to a specific bandwidth level for each VSC and for each user. For bandwidth
control to be operational, you must first enable the Data rate limits option. Once this is done, you
can assign traffic to bandwidth levels as follows:
• In a VSC, select the default level for all user traffic in the Bandwidth control box. This level
applies to users who do not have a specific assignment in their user account.
• In a users account profile, set the Bandwidth level in the Bandwidth limits box.
• Or if you are using a RADIUS server to validate user logins, set the bandwidth level using a
Colubris AV-Pair value. See “Bandwidth level” (page 485).
To control the default bandwidth level for all users, see “Default user bandwidth level”
(page 473).
NOTE:
• Management traffic (which includes RADIUS, SNMP, and administrative sessions) is assigned
to bandwidth level Very High and cannot be changed.
• All traffic assigned to a particular bandwidth level shares the allocated bandwidth for that
level across all VSCs. This means that if you have three VSCs all assigning user traffic to High,
all users share the bandwidth allocated to the High level.
Customizing bandwidth levels
Bandwidth levels are arranged in order of priority from Very High to Low. Priority determines how
free bandwidth is allocated once the minimum rate is met for each level. Free bandwidth is always
assigned to the higher priority levels first.
52 Network configuration