ZyXEL MES-3528 User Guide - Page 97
Subnet Based VLAN Application Example
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Chapter 9 VLAN For example, an ISP (Internet Services Provider) may divide different types of services it provides to customers into different IP subnets. Traffic for voice services is designated for IP subnet 172.16.1.0/24, video for 192.168.1.0/24 and data for 10.1.1.0/24. The Switch can then be configured to group incoming traffic based on the source IP subnet of incoming frames. You configure a subnet based VLAN with priority 6 and VID of 100 for traffic received from IP subnet 172.16.1.0/24 (voice services). You also have a subnet based VLAN with priority 5 and VID of 200 for traffic received from IP subnet 192.168.1.0/24 (video services). Lastly, you configure VLAN with priority 3 and VID of 300 for traffic received from IP subnet 10.1.1.0/24 (data services). All untagged incoming frames will be classified based on their source IP subnet and prioritized accordingly. That is video services receive the highest priority and data the lowest. Figure 53 Subnet Based VLAN Application Example Tagged Frames Internet Untagged Frames 172.16.1.0/24 VID = 100 192.168.1.0/24 VID = 200 10.1.1.0/24 VID = 300 MES-3528 User's Guide 97