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SonicOS Enhanced 4.0 Administrator Guide
Once one or both BWM settings are enabled on the WAN interface and the available bandwidth
has been declared, a Ethernet BWM tab will appear on Access Rules. The Bandwidth tab will
present either Inbound settings, Outbound settings, or both, depending on what was enabled
on the WAN interface:
The configuration on the General tab will classify the traffic. In the above example, which
assumes no other configured BWM rules, traffic from the LAN (Trusted) Zone’s LAN Subnets
destined to the VPN (Encrypted) Zone’s 10.50.165.0 remote subnet, consisting of Service
Group VOIP will be guaranteed 30% of the declared bandwidth (30% of 1500Kbps = 450Kbps),
but it will not be permitted to exceed 80% (80% of 1500Kbps = 1200Kbps), leaving 300Kbps for
other traffic.
Declaration Limits
Bandwidth Management rules each consume memory for packet queuing, so the number of
allowed queued packets and rules on SonicOS Enhanced is limited by platform (values are
subject to change):
Consider the following about bandwidth management:
• The grand total of all declared Guaranteed Bandwidth percentages across all BWM rules
cannot exceed 100%, since it is not possible to guarantee greater than 100% of the
available bandwidth.
• The grand total of all Maximum Bandwidth values must be equal to or greater than the total
Guaranteed Bandwidth.
• The grand total of all Maximum Bandwidth values may exceed 100% (e.g. every BWM rule
may specify 100% Maximum Bandwidth, if no explicit throttling is required).
Platform RAM
Max Queued
Packets
Max
Outbound
BWM Rules
Max Inbound
BWM Rules
Total
BWM Rules
PRO 4060 256MB 2080 100 100 200
PRO 5060 512MB 6240 100 100 200