Alcatel-Lucent 1643 AMS Applications And Planning Manual page 77

Network Topologies
Corporate Head Office
Corp. A Branch Office
VLAN Trunking
At the ISP premises, the aggregated LAN traffic from multiple customers (i.e. multiple
VLANs) via one single high capacity Ethernet link (Fast Ethernet) to data equipment
in a Central Office or ISP POP such as an IP edge Router, IP Service Switch or ATM
Switch, can be handled by means of the VLAN trunking feature. VLAN trunking is a
possible application of the IEEE 802.1Q and IEEE 802.1 ad VLAN tagging scheme.
Main benefit of the VLAN trunking feature is that TransLAN
user LAN traffic via one high capacity LAN port instead of multiple low speed LAN
ports, thus reducing port, space and cabling costs. The following figure illustrates an
example of VLAN Trunking.
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365-312-801R7.2
Issue 3, May 2007
Corp. A
E1
PBX
LAN
Corp. B
E1
PBX
LAN
Metro AM
STM-1 Access/Edge Ring
Metro AM
PBX
E1
LAN
Alcatel-Lucent - Proprietary
Multi-service application with the TransLAN
LAN
STM-16 Metro/Regional Ring
ADM
Corp. A Branch Office
PBX
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E1
LAN
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®
CO or POP
Digital
ISP Router
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To Internet
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or Metropolis AMS
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