Link Aggregation - Alcatel-Lucent 9500 MXC User Manual

Chapter 7. Node and Terminal Plug-ins

Link Aggregation

Vol. IV-7-76
1. Only applies to tagging options.
DAC GE VLAN Modes
Figure 7-28.
Link aggregation aggregates two or more data links so they appear as a single,
higher-bandwidth logical link. The resultant traffic capacity is the sum of the
individual link capacities.
Aggregated links also provide redundancy. Should one of the physical links fail,
affected traffic is redirected onto the remaining link, or links:
• In the event the remaining link or links do not have the capacity needed to avoid
a traffic bottleneck, appropriate QoS settings can be used to prioritize traffic
such that all high priority traffic continues to get through.
• To provide a similar level of redundancy without aggregation, hot-standby or
diversity protection is required, but with such protection the standby equipment
is not used to pass traffic.
Two modes of link aggregation are supported by DAC GE, layer 2 and layer 1.
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