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Trunking
Page 29-19
Trunking
A trunking service must be set up for each virtual circuit that will support trunking. When
trunking is set up, you specify the slot, port, DLCI, and Groups that are going to be trunked
over the virtual circuit.
The illustration below shows a sample trunking configuration. The
WSX in Los Angeles has
two trunk ports, one to Chicago and one to New York.
Trunk Ports and Virtual Circuits Over Frame Relay Network
Frame Relay virtual ports are mapped one-to-one to virtual circuits, so each of these trunk
ports is connected to a virtual circuit. When setting up Trunking you need to be aware of
your virtual circuit configurations, their
DLCIs, and their termination points. Configuring a
Trunking Service is described in Configuring a Trunking Service on page 29-62.
Note
No standard exists for trunking Groups or
VLANs over
Frame Relay. Therefore, you must configure Trunking
using Alcatel’s method.
WSX
WSX
Omni Switch/
Router
New York
Omni Switch/Router
Chicago
Omni Switch/
Router
Los Angeles
WSX
Gp. 3 Gp. 4
Gp. 2
Gp. 3
Gp. 5
Gp. 2
Gp. 3
Gp. 4
Trunk port attaches to
VC to Los Angeles.
Groups 2 and 3 Trunked.
Trunk ports attach to VCs to Chicago
and New York. Trunk Port/VC to Chica-
go carries Groups 3 and 4. Trunk Port/
VC to New York carries Groups 2 and 3.
Trunk port attaches to
VC to Los Angeles.
Groups 3 and 4 Trunked.
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yy
NN
NN
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tt
tt
ww
ww
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