Technical data

234 Meru System Director Configuration Guide © 2012 Meru Networks, Inc.
Configuring QoS Rules With the Web UI
19. In the Priority box, type the priority at which the flow is placed in a best-effort
queue. Packets in a higher priority best-effort queue are transmitted by access
points before packets in lower-priority queues, but after packets for reserved
flows.
Priority can be a value from 0 through 8, with 0 specifying no priority and 8
specifying the highest priority. The default value is 0. If you enable priority
(specify a non-zero value), you cannot specify an average packet rate or token
bucket rate.
20. In the Traffic Control list, select one of the following:
— On
— Off
For all types of flows (explicit, detected, and best-effort), selecting On for traffic
control restricts the flow to the rate you specified. Packets above that rate are
dropped.
21. In the DiffServ Codepoint list, select the appropriate DiffServ setting, if
applicable.
22. In the QoS Rule Logging list, select whether to enable or disable logging activity
for this QoS rule:
— On
— Off
23. In the QoS Rule Logging Frequency field, change the default collection interval in
which packets related to this rule are logged, if QoS Logging is enabled. The
interval must be a number between 30 and 60 (seconds).
24. Match Checkbox: For any field with the corresponding Match checkbox selected,
packets must match the information in the field or they are dropped. If no match
box is checked, the opposite happens and all criteria are matched. Also see More
About the Match Checkbox and Flow Class Checkbox.
25. Flow Class Checkbox: Flow Class options are relevant only for Flow Control rules
(rules with Traffic Control enabled and Token Bucket Rate specified) and Firewall
rules. This is typically rate limiting. When Flow Class is checked for a field, if a
packet has matched a rule (either Flow Control or Firewall types), these fields
are stored in the Flow Class entry. A Flow Class entry is used by the system for
aggregating a set of flows so that they can be subjected to similar behavior, be it
dropping the packets, or rate limiting them.
For example, if a rule has a Src IP address of 0.0.0.0 and the Flow Class box
checked, and Token Bucket Rate set to 10 kbytes/sec, all packets passing through
the system must match this rule, and each flow will be allowed a maximum
throughput of 10000 bytes/sec. If the rule were to have Src IP address of 10.0.0.10
and the Flow Class box checked, with a Token Bucket Rate of 10 kbytes/sec, all
packets coming from a machine with IP address 10.0.0.10, must match this rule,
and the cumulative throughput allowed for this machine shall be no more than
10000bytes/sec. Also see More About the Match Checkbox and Flow Class
Checkbox.
26. To add the QoS rule, click OK.