3com S7906E Manuel De Montage
1-6
On the downlink port
On the uplink port
For uplink traffic
For downlink traffic
For uplink traffic
Do... Based
on… Do...
Based
on…
Do... Based
on…
Replace the
original
SVLAN with
the new
SVLAN
original
SVLAN with
the new
SVLAN
Uplink policy
in the
inbound
direction
in the
inbound
direction
Replace the
new SVLAN
and CVLAN
with the
original
SVLAN and
CVLAN
new SVLAN
and CVLAN
with the
original
SVLAN and
CVLAN
Downlink
policy in the
outbound
direction
policy in the
outbound
direction
Replace the
original CVLAN
with the new
CVLAN
original CVLAN
with the new
CVLAN
Uplink policy in the
outbound direction
outbound direction
z
For information about DHCP snooping, refer to DHCP Configuration in the IP Services Volume.
z
For information about QoS policies, refer to QoS Configuration in the QoS Volume.
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
Remarks
Optional
Perform this configuration on the corridor
switches shown in
switches shown in
Optional
Perform this configuration on the campus
switches shown in
switches shown in
Optional
Perform this configuration on the edge devices
from which user traffic enters the SP network.
Examples are Device A and Device D in
from which user traffic enters the SP network.
Examples are Device A and Device D in
Optional
Perform this configuration on an edge device
connecting two SP networks. An example is
Device C in the SP 2 network in
connecting two SP networks. An example is
Device C in the SP 2 network in
For VLAN mapping to work, you are required to do the following in addition to configuring QoS policies:
z
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.