3Com WL-603 User Manual page 107

Figure 80 VLAN Screen
Click Add VLAN to create a new entry (see
Figure 81 VLAN Profile Screen
Enter a description for your VLAN in the Description field.
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Enter the IP Address and subnet mask in the corresponding fields.
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Select to set the NAT Domain as public or private.
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IGMP Snooping: enabling it will turn on the feature that allows an
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Ethernet switch to "listen in" on the IGMP conversation between
hosts and routers.
IGMP Querier: enabling this function will send out periodic IGMP
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queries.
Click Apply.
Advanced
Figure 81).
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