Subnet Based Vlans; Configuring Subnet Based Vlan - ZyXEL Communications MSC1024G Series User Manual

Managment switch card

Hide thumbs Also See for MSC1024G Series:

Table of Contents

Table 38 ACL > Loop Guard: Slot (continued)

5.21 Subnet Based VLANs

Subnet based VLANs allow you to group traffic into logical VLANs based on the source IP

subnet you specify. When a frame is received on a port, the MSC checks if a tag is added

already and the IP subnet it came from. The untagged packets from the same IP subnet are then

placed in the same subnet based VLAN. One advantage of using subnet based VLANs is that

priority can be assigned to traffic from the same IP subnet.

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 MSC 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 75 Subnet Based VLAN Application Example

172.16.1.0/24

Click ACL > Subnet VLAN to display the configuration screen as shown.

MSC1000G/1024G/1224G Series User's Guide

This field displays the time (in seconds) a port in dynamic mode waits to become

active again after shut down by the system.

Select the radio button of the port from which you want to copy settings.

Tagged Frames

192.168.1.0/24

Chapter 5 Access Control List Screens

Msc1224g series Msc1000g series