2-16
Catalyst 3750 Metro Switch Command Reference
OL-9645-10
Chapter 2 Catalyst 3750 Metro Switch Cisco IOS Commands
auto qos voip
shows the generated auto-QoS configuration for the egress queue-set.
Command Modes
Interface configuration
Command History
Usage Guidelines
Use this command to configure the QoS appropriate for VoIP traffic within the QoS domain. The QoS
domain includes the switch, the interior of the network, and edge devices that can classify inbound traffic
for QoS.
In releases earlier than Cisco IOS Release 12.2(25)EY, auto-QoS configures the switch only for VoIP
with Cisco IP Phones on switch ports.
In Cisco IOS Release 12.2(25)EY or later, auto-QoS configures the switch for VoIP with Cisco IP Phones
on switch and routed ports and for VoIP with devices running the Cisco SoftPhone application. These
releases support only Cisco IP SoftPhone Version 1.3(3) or later. Connected devices must use Cisco Call
Manager Version 4 or later.
To take advantage of the auto-QoS defaults, you should enable auto-QoS before you configure other QoS
commands. You can fine-tune the auto-QoS configuration
after
you enable auto-QoS.
Table 2-2
Auto-QoS Configuration for the Ingress Queues
Ingress Queue
Queue Number
CoS-to-Queue Map
Queue Weight
(Bandwidth)
Queue (Buffer)
Size
SRR
1
shared
1.
SRR = shaped round robin. Ingress queues support shared mode only.
1
0, 1
81 percent
67 percent
Priority
2
2, 3, 4, 5, 6, 7
19 percent
33 percent
Table 2-3
Auto-QoS Configuration for the Egress Queue-Set
Egress Queue
1
1.
On an enhanced-services (ES) port, the
srr-queue bandwidth shape
interface configuration command is not part of the
generated
auto qos voip
command list.
Queue Number
in the
Queue-Set
CoS-to-Queue Map
Queue Weight
(Bandwidth)
Queue (Buffer)
Size
Priority (shaped)
1
5
10 percent
10 percent
SRR shared
2
3, 6, 7
10 percent
10 percent
SRR shared
3
2, 4
60 percent
26 percent
SRR shared
4
0, 1
20 percent
54 percent
Release
Modification
12.1(14)AX
This command was introduced.
12.2(25)EY
The
cisco-softphone
keyword was added, and the generated auto-QoS
configuration changed.
