Configuring the V2IU 4350
3.Press Submit.
Configuring VLANs in the 4350
As depicted in the diagram below, VLANs are used to connect the 4350 to an Ethernet switch that has been configured to use VLANs.
VLANid 1/2
VLANid 1/3
VLANid 1/2/3
VLAN
Switch
VLANid 1/2/3
4350
P1
P2
WAN
(VLANid 16) P3 P4
802.1
EM006
Typically, all VoIP devices are placed in the same VLAN while data devices are placed in a different VLAN. This is to ensure priority treatment of the VoIP traffic on the LAN. Note that the 4350 does not require VLANs to prioritize VoIP traffic; prioritization is determined by the VOS Application Layer Gateway, regardless of VLAN. Some important notes about VLANs:
•A physical LAN port will operate in either 802.1 or 802.1q mode, not both simultaneously
•The 4350 supports up to 16 VLANs
•A unique IP Subnet is assigned to each VLAN
•You can associate one or more VLANs to each LAN port operating in 802.1q mode
•Traffic within a VLAN is switched among all ports with membership
•Traffic between VLANs is routed by the 4350
•The 4350 ALG can only be assigned to one VLAN id
—Only ALG traffic is prioritized over the WAN
—Other
•A DHCP server can be enabled/disabled per VLAN
•Cisco Discovery Protocol is not supported
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