Cisco Cisco SG200-26P 26-port Gigabit PoE Smart Switch メンテナンスマニュアル

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VLAN Management
Voice and Media
Cisco Small Business SF200E Series Advanced Smart Switch
120
5
 
The type of the original default VLAN is changed from Default to Static, and 
it can be deleted. One exception is VLAN 1. Even if it is no longer designated 
as the default VLAN, VLAN 1 cannot be deleted.
To select a default VLAN:
STEP 1
Click VLAN Management Default VLAN Settings in the navigation window.
STEP  2
Select the VLAN from the list.
STEP  3
Click Apply.
Voice and Media
Voice-over-Internet-Protocol (VoIP) allows using a computer data network for 
voice telephone calls. With the increased deployment of delay-sensitive 
applications such as VoIP in modern networks, proper QoS configuration is 
needed to ensure high-quality performance. The Voice and Media feature 
provides a simple classification mechanism for voice packets so that they can be 
prioritized above data packets.
The Voice and Media feature identifies VoIP streams in Ethernet switches and 
provides them with a better Class-of-Service (CoS) than ordinary traffic. The 
switch supports two types of Voice and Media:
Protocol-based—Identifies a VoIP session using the Session Initiation 
Protocol (SIP) and H.323 control traffic, and assigns these packets the 
highest priority on the voice VLAN.
OUI-based—Ports that are enabled for this feature automatically become 
members of the configured voice VLAN. The switch detects 
Organizationally Unique Identifier (OUI) values in the first three bytes of the 
MAC addresses in client packets to classify them on the VoIP VLAN and 
prioritize them on the Auto VoIP-enabled ports.
These topics for more information on the configuration pages available in VLAN 
Management
 > Voice and Media: