NetRunner WAN User’s Manual
Network Planning
2-5
Dual Composite Link Load Balancing (with Redundancy) Application
(for all NetRunner models except the NR75E model)
All WAN network link traffic between NetRunner nodes is load balanced
between Link A and Link B. In the event of a single link failure, all traffic is
automatically rerouted over the remaining link. Note that in this application
with NetRunner 2000E units, dual 128 Kbps links are possible; however this
link speed may limit the number or type of devices that can be attached due
to processor constraints.
PBX
Fax
PBX
Fax
Node A
Node B
Link B
Link A
NetRunner
2000E
NetRunner
2000E
Phone
Link Load Balancing
String
If several NetRunner units are linked together, a string topology is created.
There is a maximum of six nodetonode hops allowed for units with voice/fax
modules.
Any or all of these may be NetRunner 500ET, 1000E or 2000E network node
units. NetRunner 75E
1
can be at the ends of the string only.
Å
PBX
NetRunner
NetRunner
NetRunner
NetRunner
Å
Å
Å
Typical String Network
__________
1
The exception to this is frame relay links.