Configuring The Switch - Linksys SPA921 - Cisco - IP Phone Installation And Configuration Manual

Connecting the Equipment
Connecting and Configuring the Switch
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SPA9000 Voice System Installation and Configuration Guide for Setup Wizard

Configuring the Switch

You need to enable port fast to facilitate the broadcast communications between
the SPA9000 and the phones. You also need to configure the Quality of Service
settings to help to prevent network delays affecting voice communications.
•
Enable spanning tree and port fast.
If the switch does not provide a way to enable port fast, then you must
NOTE
disable spanning tree. The preferred method is to enable spanning
tree and port fast.
•
Enable QoS with DSCP.
Enabling Spanning Tree and Port Fast on the SLM224P Switch
To avoid timing issues related to Spanning Tree Protocol (STP) and to allow
multicasting to work correctly for SPA9000 Voice System, enable port fast on the
switch ports that will be connected to the SPA9000 and the SPA9xx IP phones.
When Port Fast is enabled, Fast Link mode is active. In Fast Link mode, the Port
State is automatically placed in the forwarding state when the port link is up. Fast
Link optimizes the STP protocol convergence. STP convergence can take 30-60
seconds in large networks.
Choose the ports that you will use to connect the SPA9000 and the IP phones.
Connect the administration computer to the switch.
Start Internet Explorer, and enter the IP address of the switch. The default IP
address of the switch is 192. 1 68. 1 .254. The default User ID is admin, with no
password. After you log on, the Home page appears.
Click Spanning Tree tab > STP Port Settings.
From the Port drop-down list, choose the port number for the SPA9000.
Make sure that the Enable STP check box is checked, to enable STP on the port.
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