Vlan Mapping Configuration Task List - HP 4800G Series Configuration Manual

Two-to-two VLAN mapping
In two-to-two VLAN mapping, the outer VLAN and the inner VLAN carried in a double-tagged uplink
frame received at the downlink port on the edge device of an SP network are called the original SVLAN
and CVLAN, and the VLANs that the edge device substitutes for the original SVLAN and CVLAN are
called the new SVLAN and CVLAN.
For uplink traffic
Do...
Replace the
original
SVLAN with
the new
SVLAN

VLAN Mapping Configuration Task List

You need to configure VLAN mapping on your device depending on its position in the network.
Complete the following tasks to configure VLAN mapping:
Task
Configuring One-to-One
VLAN Mapping
Configuring Many-to-One
VLAN Mapping
Configuring Two-to-Two
VLAN Mapping
For VLAN mapping to work, you are required to do the following in addition to configuring QoS policies:
Enable ARP detection to send ARP packets to the CPU to allow modification of the VLAN attributes
carried in the packets, which is impossible with the normal ARP packet processing procedure. For
information about ARP detection, refer to ARP Attack Protection Configuration in the Security
Volume.
Enable the dynamic address binding support of IP Source Guard to filter packets received on a port
based on the source IP address and MAC address bindings created dynamically to prevent illegal
packets from passing through the port. For information about this feature, refer to IP Source Guard
Configuration in the Security Volume.
On the downlink port
For downlink traffic
Based on... Do...
Replace the
new SVLAN
Uplink policy
and CVLAN
in the
with the
inbound
original
direction
SVLAN and
CVLAN
Optional
Perform this configuration on the corridor switches shown in
Optional
Perform this configuration on the campus switches shown in
Optional
Perform this configuration on an edge device connecting two SP
networks. An example is Device C in the SP 2 network in
Based
Do...
on...
Downlink Replace the
policy in the original CVLAN
outbound with the new
direction CVLAN
Remarks
1-5
On the uplink port
For uplink traffic
Based on...
Uplink policy in the
outbound direction
Figure
Figure
Figure
1-1.
1-1.
1-2.