Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 2120)

VCStack Introduction
Software Reference for x310 Series Switches
82.6 AlliedWare Plus TM Operating System - Version 5.4.4C C613-50046-01 REV A
Employing link aggregation rather than spanning tree to manage the parallel paths,
enables the bandwidth of both data links to be utilized under normal conditions, whilst
enabling a single data link to operate should its partner link fail.
Figure 82-6: VCStack Resilient Stacked Topology Example
This network employs two SwitchBlade® x908 switches to form an expandable network
core. These switches are stacked and so appear as a single logical switch (note that smaller
switches such as the x610 can be also be used to form the stacked core or stacked
distribution).
This network topology supplies multiple dual connections to a number of downstream
distribution switches that can in turn connect to user devices. Similarly, the dual network
paths provide very reliable connectivity to the servers portion of the network.
Resilient_SBx900
Servers
Stacking
Links
Server Aggregation
Core
Distribution
Edge
Stack
10 Gigabit link
1 Gigabit link
Link aggregation
x210-16 x210-16 x210-16
x210 x210
x510 or x610
x510 or x610
x210
x510 or x610
x210 x210 x210
SBx908
SBx908