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Configuring one-to-one VLAN mapping
About one-to-one VLAN mapping
Configure one-to-one VLAN mapping on the customer-side ports of wiring-closet switches
(see Figure 1) to isolate tra
ffic of the same service type from different homes.
Procedure
1. Enter system view.
system-view
2. Enter interface view.
{ Enter Layer 2 Ethernet interface view.
interface interface-type interface-number
{ Enter Layer 2 aggregate interface view.
interface bridge-aggregation interface-number
3. Set the link type of the port.
port link-type { hybrid | trunk }
By default, the link type of a port is access.
4. Assign the port to the original VLAN and the translated VLAN.
{ Assign the trunk port to the original VLAN and the translated VLAN.
port trunk permit vlan vlan-id-list
By default, a trunk port is assigned to VLAN 1.
{ Assign the hybrid port to the original VLAN and the translated VLAN as a tagged member.
port hybrid vlan vlan-id-list tagged
By default, a hybrid port is an untagged member of the VLAN to which the port belongs
when its link type is access.
5. Configure a one-to-one VLAN mapping.
vlan mapping vlan-id translated-vlan vlan-id
By default, no VLAN mapping is configured on an interface.
Configuring many-to-one VLAN mapping
About many-to-one VLAN mapping
Configure many-to-one VLAN mapping on campus switches (see Figure 1) to transmit the same type
of traffic from different users in one VLAN.
Configuring many-to-one VLAN mapping in dynamic IP
address assignment environment
About many-to-one VLAN mapping in dynamic IP address assignment environment
In a network that uses dynamic address assignment, configure many-to-one VLAN mapping with
DHCP snooping.
The switch replaces the SVLAN tag of the downlink traffic with the associated CVLAN tag based on
the DHCP snooping entry lookup.
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