Related information
Please also refer to:
• “LAN-VPN (M-LAN) mode” (p. 8-64)
• “IEEE 802.1Q STP virtual switch mode” (p. 8-65)
• “Provider bridge mode” (p. 8-67)
Ethernet multipoint transport with shared bandwidth
The following figure shows a network example of a multipoint Ethernet over SDH
network with shared bandwidth:
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 “Tagging modes” (p. 8-68)), depending on the desired
mode of operation.
TransLAN equipment
STM-N ring
STM-N ring
Ethernet connection
LAN
(customer A)
LAN
(customer A)
LAN
(customer A)
LAN
(customer B)
LAN
(customer B)
Traffic provisioning
Ethernet over SDH applications
....................................................................................................................................................................................................................................
365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
8-53
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