Configuring Separate Voice And Data Subnets - Cisco HWIC-4ESW - EtherSwitch HWIC Switch User Manual

How to Configure EtherSwitch HWICs

Configuring Separate Voice and Data Subnets

The HWICs can automatically configure voice VLAN. This capability overcomes the management
complexity of overlaying a voice topology onto a data network while maintaining the quality of voice
traffic. With the automatically configured voice VLAN feature, network administrators can segment
phones into separate logical networks, even though the data and voice infrastructure is physically the
same. The voice VLAN feature places the phones into their own VLANs without the need for end-user
intervention. A user can plug the phone into the switch, and the switch provides the phone with the
necessary VLAN information.
For ease of network administration and increased scalability, network managers can configure the
HWICs to support Cisco IP phones such that the voice and data traffic reside on separate subnets. You
should always use separate VLANs when you are able to segment the existing IP address space of your
branch office.
User priority bits in the 802.1p portion of the 802.1Q standard header are used to provide prioritization
in Ethernet switches. This is a vital component in designing Cisco AVVID networks.
The HWICs provides the performance and intelligent services of Cisco IOS software for branch office
applications. The HWICs can identify user applications—such as voice or multicast video—and classify
traffic with the appropriate priority levels.
Follow these steps to automatically configure Cisco IP phones to send voice traffic on the voice VLAN
ID (VVID) on a per-port basis (see the
SUMMARY STEPS
1.
2.
3.
4.
5.
DETAILED STEPS
Command or Action
Step 1
enable
Example:
Router> enable
Step 2
configure terminal
Example:
Router# configure terminal
Step 3
interface interface-type interface-number
Example:
Router(config)# interface fastethernet
0/2/1
76
enable
configure terminal
interface interface-type interface-number
switchport mode trunk
switchport voice vlan vlan-id
Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
"Voice Traffic and VVID" section on page
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
•
Enters global configuration mode.
Specifies the port to be configured and enters interface
configuration mode.
Enter the interface type and interface number.
•
77).