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Voice Traffic And Vvid - Cisco HWIC-4ESW User Manual

Etherswitch interface cards
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How to Configure EtherSwitch HWICs
DETAILED STEPS
Command
Step 1
enable
Example:
Router> enable
Step 2
configure terminal
Example:
Router# configure terminal
Step 3
interface interface-id
Example:
Router(config)# interface 0/2/1
Step 4
switchport mode trunk
Example:
Router(config-if)# switchport mode trunk
Step 5
switchport voice vlan vlan-id
Example:
Router(config-if)# switchport voice vlan
100

Voice Traffic and VVID

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.
Configuring a Single Subnet for Voice and Data
For network designs with incremental IP telephony deployment, network managers can configure the
HWICs so that the voice and data traffic coexist on the same subnet. This might be necessary when it is
impractical either to allocate an additional IP subnet for IP phones or to divide the existing IP address
space into an additional subnet at the remote branch, it might be necessary to use a single IP address
space for branch offices. (This is one of the simpler ways to deploy IP telephony.)
This configuration approach must address two key considerations:
•
•
Book Title
90
Network managers should ensure that existing subnets have enough available IP addresses for the
new Cisco IP phones, each of which requires a unique IP address.
Administering a network with a mix of IP phones and workstations on the same subnet might pose
a challenge.
Cisco HWIC-4ESW and HWIC-D-9ESW EtherSwitch Interface Cards
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
•
Enters global configuration mode.
Enters the interface configuration mode and the port to be
configured (for example, interface fa0/3/1).
Configures the port to trunk mode.
Configures the voice port with a VVID that will be used
exclusively for voice traffic.
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