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Uplink policy: A QoS policy containing VLAN mappings for uplink traffic.
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Downlink policy: A QoS policy containing VLAN mappings for downlink traffic.
How VLAN Mapping Is Implemented
This section describes how VLAN mapping is implemented on your device.
One-to-one VLAN mapping
On the downlink port
For uplink traffic
For downlink traffic
Do…
Based on…
Do…
Based on…
Replace the
customer VLAN
(CVLAN) with the
service provider
VLAN (SVLAN)
Uplink policy in the
inbound direction
Replace the SVLAN
with the original
CVLAN
Downlink policy in the
outbound direction
For information about QoS policies, refer to
QoS Configuration
in the
QoS Volume
.
Many-to-one VLAN mapping
On the downlink port
On the uplink port
For uplink traffic
For downlink traffic
Do...
Based on…
Do...
Based on…
Map all specified
customer VLANs
(CVLANs) to one
service provider
VLAN (SVLAN)
Uplink policy in the
inbound direction
Replace the SVLAN
with the original
CVLAN
DHCP snooping
address table, which
contains mappings of
the SVLAN, IP
address, MAC
address, and CVLAN
for DHCP clients
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For information about DHCP snooping, refer to
DHCP Configuration
in the
IP Services Volume
.
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For information about QoS policies, refer to
QoS Configuration
in the
QoS Volume
.
