Manualsbrain.com
  1. Manuels
  2. Marques
  3. 3com
  4. S7906E
  5. Manuel De Montage

3com S7906E Manuel De Montage

Télécharger
Page de 2621
 
1-4 
 
Basic Concepts of VLAN Mapping 
Figure 1-1 Basic concepts of VLAN mapping 
 
Before you configure VLAN mappings, be aware of the following concepts, which will be used 
throughout this document. 
z 
Uplink traffic: Traffic transmitted from a user network to a distribution network or an SP network.  
z 
Downlink traffic: Traffic transmitted from a distribution network or an SP network to a user network.  
z 
Uplink port: A port transmitting uplink traffic and receiving downlink traffic.  
z 
Downlink port: A port transmitting downlink traffic and receiving uplink traffic.  
z 
Uplink policy: A QoS policy containing VLAN mappings for uplink traffic. 
z 
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