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• Each household subscribes to PC, VoD, and VoIP services, and obtains the IP address through
DHCP.
• On the home gateways, VLANs 1, 2, and 3 are assigned to PC, VoD, and VoIP traffic,
respectively.
To isolate traffic of the same service type from different households, configure one-to-one VLAN
mappings on the wiring-closet switches. This feature assigns one VLAN to each type of traffic from
each household.
To save VLAN resources, configure many-to-one VLAN mappings on the campus switch (Switch C).
This feature transmits the same type of traffic from different households in one VLAN. Use VLANs
501, 502, and 503 for PC, VoD, and VoIP traffic, respectively.
Table 20 VLAN mappings for each service
Service
VLANs on home
gateways
VLANs on wiring-closet switches
(Switch A and Switch B)
VLANs on campus
switch (Switch C)
PC VLAN 1 VLANs 101, 102, 103, 104 VLAN 501
VoD VLAN 2 VLANs 201, 202, 203, 204 VLAN 502
VoIP VLAN 3 VLANs 301, 302, 303, 304 VLAN 503
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