Configuring Vlan Mapping - HP 5820X series Configuration Manual

Figure 62 Many-to-one VLAN mapping implementation
Customer
network
Each DHCP snooping entry contains information about one DHCP client, including its IP address, MAC
address, and CVLAN. For more information about DHCP snooping, see the Layer 3—IP Services
Configuration Guide.
Two-to-two VLAN mapping
Implement two-to-two VLAN mapping through the following configurations, as shown in
For uplink traffic, apply an inbound policy on the customer-side port to replace the SVLAN with a
•
new SVLAN, and apply an outbound policy on the network-side port to replace the CVLAN with a
new CVLAN.
For downlink traffic, apply an outbound policy on the customer-side port to replace the double tags
•
with the original VLAN tag pair.
Figure 63 Two-to-two VLAN mapping implementation
User network

Configuring VLAN mapping

Use the VLAN mapping methods as appropriate to the roles of your switches in the network, as described
in this table:
Task
Configuring one-to-one VLAN mapping
Configuring many-to-one VLAN mapping
Configuring two-to-two VLAN mapping
CVLAN 1 Data
CVLAN n Data
CVLAN Data
Network-side port Customer-side port
SVLAN CVLAN
SVLAN CVLAN
Network-side port Customer-side port
Inbound
uplink policy
DHCP snooping table lookup
Uplink traffic
Inbound Outbound
uplink policy uplink policy
Data SVLAN'
Data SVLAN'
Outbound
downlink policy
Uplink traffic
Switch role
Wiring-closet switch (see
Campus switch (see
Edge switch between SP networks, for example, PE
3 in Figure 59
182
SVLAN Data
SVLAN Data
SVLAN Data
Downlink traffic
CVLAN' Data
SP network
CVLAN' Data
Downlink traffic
Figure 58)
Figure 58)
SP network
Figure 63.