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A superior solution: Virtual Chassis Stacking
(VCS) and Link Aggregation (LAG)
VCS
Device
resiliency
(Virtual Chassis Stacking)
Allied Telesis now provides a superior solution for enterprise
network resiliency.
In essence, the solution is very simple: the core of the network
is a set of switches connected together to form a single virtual
chassis. In normal operation, the virtual chassis acts as a single
switch.The edge switches have dual connections to the virtual
chassis using port aggregation (as seen in figure 2).
10 Gigabit link
1 Gigabit link
10/100 link
Link aggregation
4
|
Allied Telesis Solutions: VCStack
+
LAG
Path
resiliency
(Link Aggregation)
8600
8000S
Resiliency in this network is delivered by the virtual chassis and
the multiple links:
■
Edge switches have dual connections to the virtual chassis.This
provides resiliency in the case of broken links or failed ports.
■
Each link from an edge switch connects to different virtual chassis
members.This provides resiliency in the case of core switch
failure.
"The virtual chassis acts as a single switch..."
SwitchBlade x908
x900
EDGE
Servers
CORE
Figure 2:Virtual Chassis Stacking