Split Trunking Support with HP Auto Port Aggregation

Figure 2. Failover group with redundant switches
Switch #1
Failover Group
lan900
Link Aggregate
lan902
(Standby)
Link Aggregate
lan901
(Primary)
Switch #2
HP-UX Server
The main drawback of this configuration is that only half of the physical links are used for traffic,
while the other half are always on standby. Thus the bandwidth is one-half that of lan900 in Figure 1
under normal conditions.
With the split trunk configuration shown in Figure 3, all physical links of the link aggregate lan900
are connected to two switches participating in a stack. Unlike Figure 2, all physical links participate
in traffic. The link aggregation bandwidth is reduced only when a member switch in the stack fails.
Maximum bandwidth is the same as lan900 in Figure 1 under normal conditions.
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