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Chapter 11: Deployment Examples CLI
QoS Policy: "voice"
Voice
The policy assigns the highest priority to voice traffic (Class 6). For each voice session up to 512 kbps,
The policy assigns the highest priority to voice traffic (class 6). For each voice session up to
cluster members provide "strict" forwarding, that is, they forward traffic immediately without queueing
512 Kbps, hive members provide "strict" forwarding; that is, they forward traffic immediately
it.
without queuing it.
Streaming
Media
Because streaming media (Class 5) needs more bandwidth than voice does, the policy defines a higher
Because streaming media (class 5) needs more bandwidth than voice does, the policy
forwarding rate for it: 20,000 kbps. It sorts streaming media into forwarding queues using the Weighted
defines a higher forwarding rate for it: 20,000 Kbps. It sorts streaming media into forwarding
Round Robin (WRR) mechanism. It also prioritizes streaming media by assigning a higher weight (90)
queues using the WRR (weighted round robin) mechanism. It also prioritizes streaming media
than it assigns data traffic (Class 3 = 60, Class 2 = 30).
by assigning a higher weight (90) than it assigns data traffic (class 3 = 60, class 2 = 30).
Data
The policy sorts class 3 and 2 traffic into forwarding queues using WRR and defines the highest forward-
The policy sorts class 3 and 2 traffic into forwarding queues using WRR and defines the highest
ing rate: 54,000 kbps or 1,000,000 kbps, depending on the SmartPath AP model that you are configur-
forwarding rate: 54,000 Kbps or 1,000,000 Kbps, depending on the SmartPath AP model that
ing. It gives Class 3 (for e-mail protocols SMTP and POP3) a higher WRR weight (60) so that the
you are configuring. It gives class 3 (for e-mail protocols SMTP and POP3) a higher WRR
SmartPath AP queues more e-mail traffic in proportion to other types of traffic in Class 2, which has a
weight (60) so that the SmartPath AP queues more e-mail traffic in proportion to other types of
weight of 30 by default. As a result, e-mail traffic has a better chance of being forwarded than other
traffic in class 2, which has a weight of 30 by default. As a result, e-mail traffic has a better
types of traffic when bandwidth is scarce.
chance of being forwarded than other types of traffic when bandwidth is scarce.
Class 2 is for all types of traffic not mapped to an Black Box class—such as HTTP for example.
NOTE: This example assumes that the RADIUS and AD servers were previously configured and populated with user accounts and
have been serving a wired network (not shown). The only additional configuration is to enable the RADIUS server to accept
authentication requests from the SmartPath APs.
Finally, you create a user profile "employee-net" and apply the QoS policy "voice" to the user profile on each cluster member.
You also configure the RADIUS server to return attributes in its authentication responses to indicate the user group to which the
cluster members then assign users.
Step 1: Map traffic types to QoS classes on SmartPath AP-1.
1. Map the MAC organizational unit identifier (OUI) of network users' VoIP phones to Class 6.
qos classifier-map oui 00:12:3b qos 6
In this example, all network users use VoIP phones from the same vendor whose OUI (that is, the MAC address prefix ) is
00:12:3b. When SmartPath AP-1 receives traffic from a client whose source MAC address contains this OUI, it assigns it to Class
6.
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qos policy voice qos 6 strict 512 0
qos policy voice qos 5 wrr 20000 90
qos policy voice qos 3 wrr { 54000 | 1000000 } 60
qos policy voice qos 2 wrr { 54000 | 1000000 } 30
* You do not need to enter this command because it just sets the default
values for class 2. It is shown to provide contrast with the previous command.
Figure 11-9. QoS policy "voice" for voice, streaming media, and data.
724-746-5500 | blackbox.com
*
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