PDF(1.3 MB) View with Adobe Reader on a variety of devices
ePub(1.3 MB) View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone
Mobi (Kindle)(391.5 KB) View on Kindle device or Kindle app on multiple devices
Updated:December 10, 2018
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
Voice VLAN Properties on ESW2-350G Switches
The Voice VLAN is used when traffic from VoIP equipment is assigned to a specific VLAN that is made up of voice devices (such as IP phones, VoIP endpoints, and voice systems). The switch can automatically detect and add port members to the Voice VLAN, and assign the configured QoS (Quality of Service) to packets from the Voice VLAN. If the voice devices are in different voice VLANs, IP routers are needed to provide communication.
This article explains how to configure Voice VLAN properties on ESW2-350G Switches.
• ESW2-350G • ESW2-350G-DC
Configure Voice VLAN Properties
Step 1. Log in to the web configuration utility and choose VLAN Management > Voice VLAN > Properties. The Properties page opens:
Step 2. In the Voice VLAN ID field, enter the ID of the VLAN that is to be the Voice VLAN.
Step 3. Choose the value from the CoS/802.1p drop down list . This is used by LLDP-MED as a voice network policy. The value ranges from 0 to 7. By default, 5 is selected.
Note: Changes in the voice VLAN ID, CoS/802.1p, and/or DSCP cause the switch to advertise the administrative voice VLAN as a static voice VLAN. If the option Auto Voice VLAN Activation triggered by external Voice VLAN is selected, then the default values need to be maintained. The VLAN ID cannot be the default VLAN, but can be a range.
Step 4. Choose the DSCP value that is used by the LLDP-MED as a voice network policy from the DSCP drop-down list. By default, 46 is selected.
Step 5. In the Dynamic Voice VLAN Settings area, click one of the following fields to disable or enable dynamic voice VLAN.
• Enable Auto Voice VLAN — Set the Dynamic Voice VLAN to Telephony OUI (Organization Unique Identifier). The switch automatically adds the port to the voice VLAN if it receives a packet which source MAC address matches the one of the telephone OUI.
• Disable — Disables Auto Voice VLAN or Telephony OUI.
Note: If you do not choose Enable Auto Voice VLAN, skip to Step 7.
Step 6. In the Auto Voice VLAN Activation field, if Auto Voice VLAN is enabled, click one of the following options.
• Immediate — Immediately activate the Auto Voice VLAN.
• By External Voice VLAN Trigger — When the device detects a voice VLAN advertisement, Auto Voice VLAN is activated.
Note: Re-configure voice VLAN ID, CoS/802.1p or DSCP manually from their default values which results in a static voice VLAN, which has high priority than voice CLAN that is learned from external sources.
Step 7. Click Apply.
Restart Auto Voice VLAN
Step 1. Log in to the web configuration utility and choose VLAN Management > Voice VLAN > Auto Voice VLAN. The Auto Voice VLAN page opens:
Step 2. Click Restart Auto Voice VLAN. A new window appears:
Step 3. Click OK to restart the Auto Voice VLAN. The default voice VLAN is used and all switches on the network with Auto Voice VLAN enabled restart their discovery and synchronization processes.