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Extreme Networks Data Sheet

High Availability

Cost-effective Controller

Redundancy

Summit WM controllers can operate in a

load sharing redundant mode that enables

both the primary and backup controllers to

be actively servicing trafﬁc during normal

operation. Controllers are paired so each

can assume the load of the other during a

failure. Should either controller fail, its

Altitude APs connect to the backup

controller (see Figure 6) without the need

for additional AP licenses that competing

solutions require. In a failover situation a

controller can support up to double the

number of APs. So for example, a

Summit WM20 can support an additional

32 APs in a failover situation, for a total of

64 APs.

Self-healing Radio Network

Summit WM offers self healing capability

for the radio network. At the radio level,

DRM will detect AP failures and boost the

power output of the neighboring APs to

compensate for the gap in coverage (see

Figure 7). This eliminates middle of the

night support calls when an AP fails.

With increased access to mission critical applications, enterprise users expect wireless service reliability to be at the same

level they have experienced with wired access. All aspects of the Summit WM solution provide enterprise-grade high

availability.

Figure 7: Dynamic Radio

Management

Summit

WM20

Summit

WM20

32 APs 32 APs 64 APs

Summit

WM20

Summit

WM20

Failover

Figure 6: Summit WM Controller Redundancy Scheme

1 2 3 4 5 6 7 8 9

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