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H3C Technologies H3C S12500-X Series Switches User Manual

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Figure 40 Application scenario of one-to-one VLAN mapping

In

Figure 40

, the network is planned as follows:

Each home gateway uses different VLANs to transmit the PC, VoD, and VoIP services.

To further sub-classify each type of traffic by customer, perform one-to-one VLAN mapping on the
wiring-closet switches, assigning a separate VLAN for each type of traffic from each customer. The
required total number of VLANs in the network can be very large.

Application scenario of one-to-two and two-to-two VLAN

mapping

Figure 41

shows a typical application scenario in which two remote sites of VPN A, Site 1 and Site 2,

must communicate across two SP networks, SP 1 and SP 2.

Campus switch

Distribution

network

DHCP client

DHCP server

Wiring - closet

switch

VLAN 1 - > VLAN 101
VLAN 2 - > VLAN 201
VLAN 3 - > VLAN 301

VLAN 1 - > VLAN 102
VLAN 2 - > VLAN 202
VLAN 3 - > VLAN 302

PC

VoD

VoIP

VLAN 2

Home gateway

VLAN 1

VLAN 3

PC

VoD

VoIP

VLAN 2

Home gateway

VLAN 1

VLAN 3

Wiring-closet

switch

VLAN 1 - > VLAN 199
VLAN 2 - > VLAN 299
VLAN 3 - > VLAN 399

VLAN 1 -> VLAN 200
VLAN 2 -> VLAN 300
VLAN 3 -> VLAN 400

PC

VoD

VoIP

VLAN 2

Home gateway

VLAN 1

VLAN 3

PC

VoD

VoIP

VLAN 2

Home gateway

VLAN 1

VLAN 3

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