Defining minimum and maximum bandwidths

A minimum bandwidth for certain applications is defined in LANconfig by a Firewall rule according to the following conditions:

• The rule does not need an action, because QoS rules always implicitly assume “transfer” as action.
• The guaranteed bandwidth is defined on index card 'QoS'.

• The option 'Action only for default route' limits the rule to those packets, which are sent or received via default route.
  • The option 'Action only for VPN route' limits the rule to those packets, which are sent or received via VPN tunnel.
  • The option 'Forced' defines a static reservation of bandwidth. Bandwidth reserved in this way cannot be used for any other connections, even while the preferred connection is inactive.
  • The option 'Per connection' resp. 'Globally' specifies, whether the minimum bandwidth set here is valid for each single connection corresponding to this rule (’per connection’), or, if this should be the upper limit for the sum of all connections together (’globally’).
• Like for other Firewall rules, index cards 'Stations' and 'Services' determine for which stations in the LAN / WAN and for which protocols this rule applies.

LANconfig: Firewall/QoS / Rules / Filter rules / Quality of Service

WEBconfig: Setup / IP router / Firewall / Rule list

A required minimum bandwidth is introduced by “%Q”. Here it is implicitly assumed that the respective rule is an “Accept” action, and that the packets will thus be transmitted.

A maximum bandwidth is simply defined by a limit rule, which discards by a “Drop” action all packets, which exceed the defined bandwidth.

Examples:

• %Qcds32: Minimum bandwidth of 32 kbps for each connection
• %Lgds256 %d: Maximum bandwidth of 256 kbps for all connections (globally)