Alcatel-Lucent 1643 AMS Applications And Planning Manual page 198

Ethernet Overview
Related information
Please also refer to:
•
"LAN-VPN (M-LAN) mode" (p. 11-32)
•
"IEEE 802.1Q STP virtual switch mode" (p. 11-34)
•
"Provider bridge mode" (p. 11-36)
Ethernet multipoint transport with shared bandwidth
The following figure shows a network example of a multipoint Ethernet over SDH
network with shared bandwidth:
LAN
(customer A)
STM-N ring
LAN
(customer A)
The SDH capacity is shared among more than one customer in this multipoint network.
This allows customer A to use the complete SDH bandwidth at the moment that
customer B is inactive, and vice versa. As Ethernet traffic is inherently bursty, sharing
bandwidth can increase the efficiency of the network usage.
Isolation of the traffic of different end-users can be accomplished by using transparent
tagging or VLAN tagging (see
mode of operation.
....................................................................................................................................................................................................................................
11-22
STM-N ring
LAN
(customer B)
"Tagging modes" (p.
Alcatel-Lucent - Proprietary
See notice on first page
Ethernet over SDH applications
LAN
(customer B)
LAN
(customer A)
TransLAN equipment
Ethernet connection
11-37)), depending on the desired
365-312-801R7.2
Issue 3, May 2007