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Cisco Catalyst Blade Switch 3030 Command Reference
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Chapter 2 Cisco Catalyst Blade Switch 3030 Cisco IOS Commands
auto qos voip
auto qos voip
Use the
auto qos voip
interface configuration command to automatically configure quality of service
(QoS) for voice over IP (VoIP) within a QoS domain. Use the
no
form of this command to return to the
default setting.
auto qos voip
{
cisco-phone
|
cisco-softphone
|
trust
}
no auto qos voip
[
cisco-phone
|
cisco-softphone
|
trust
]
Syntax Description
Defaults
Auto-QoS is disabled on the port.
When auto-QoS is enabled, it uses the ingress packet label to categorize traffic, to assign packet labels,
and to configure the ingress and egress queues as shown in
Table 2-1
.
cisco-phone
Identify this port as connected to a Cisco IP Phone, and automatically configure QoS
for VoIP. The QoS labels of incoming packets are trusted only when the telephone
is detected.
cisco-softphone
Identify this port as connected to a device running the Cisco SoftPhone, and
automatically configure QoS for VoIP.
trust
Identify this port as connected to a trusted switch or router, and automatically
configure QoS for VoIP. The QoS labels of incoming packets are trusted. For
nonrouted ports, the CoS value of the incoming packet is trusted.
Table 2-1
Traffic Types, Packet Labels, and Queues
VoIP Data
Traffic
VoIP Control
Traffic
Routing Protocol
Traffic
STP
1
BPDU
2
Traffic
1.
STP = Spanning Tree Protocol
2.
BPDU = bridge protocol data unit
Real-Time
Video Traffic
All Other Traffic
DSCP
3
3.
DSCP = Differentiated Services Code Point
46
24, 26
48
56
34
–
CoS
4
4.
CoS = class of service
5
3
6
7
3
–
CoS-to-Ingress
Queue Map
2, 3, 4, 5, 6, 7 (queue 2)
0, 1 (queue 1)
CoS-to-Egress
Queue Map
5 (queue 1)
3, 6, 7 (queue 2)
4 (queue 3)
2
(queue 3)
0, 1
(queue 4)
