Alcatel-Lucent 1643 AMS User's Operation Manual page 393

Traffic provisioning
only needs to be supported at the end nodes (i.e. at the TransLAN
with the end-customer's LAN). The rest of the network simply transports the separate
channels.
Example 1
As an example, the following figure shows the virtual concatenation of 5 × VC-12:
The 10 Mbit/s payload is put into a VC-12–5v, i.e. into a virtual concatenation group
(VCG) consisting of five virtually concatenated VC-12s. These VC-12s can travel the
network independently, and do not have to follow the same route. At the endpoint, the
VC-12–5v is reassembled, and the payload is extracted.
Example 2
The second example shows the principle of virtual concatenation in a Gigabit Ethernet
(GbE) network application. Protection of the virtually concatenated payload is possible
via standard SDH transmission protection schemes.
Network element
Ethernet
frame
LAN
....................................................................................................................................................................................................................................
365-312-807R7.2
Issue 4, May 2007
10 Mbit/s
Ethernet payload
VC-12-5v
0 1
VC-12 VC-12
VC-12 VC-12
0 1
VC-12-5v
10 Mbit/s
Ethernet payload
VC-4-7v
WAN
Alcatel-Lucent - Proprietary
See notice on first page
2 3 4
VC-12 VC-12 VC-12
VC-12 VC-12 VC-12
2 3 4
VC-4-7v
WAN
Virtual concatenation
®
cards that interface
Network element
Ethernet
frame
LAN
8-41