Planet SGSW-24240 — user Manual for Switch Stacking and Topology Features [200/328]

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User’s Manual of WGSW-24040 / WGSW-24040R

SGSW-24040 / SGSW-24040R

200

4.16 Stacking

– SGSW-24040 / SGSW-24040R

Using Stacking, it is possible to connect a number of switches together in a stack, which behaves as a single switch as seen

from outside the stack.

Two types of stack topologies are supported:

 Ring topology

 Chain topology (same as a disconnected ring)

Multiple PLANET SGSW-24040 / SGSW-24040R devices may be connected together to constitute a ring or chain stack

topology using the STX / 5Gbps ports as interconnect links. Dedicated stacking features built into SGSW-24040 /

SGSW-24040R makes all devices in the stack operate together as a single, much larger switch. Among the stacking features

are:

 Hardware controlled stack wide learning and continuous automatic MAC table synchronization

 Shortest path forwarding, providing low latency and optimal use of stacking link bandwidth

 QoS consistency across stack

 Single point of management for simple stack administration

 Low Cost and Flexible HDMI-like Stacking cables

 Real Plug and Play connectivity



The following figure shows an example with five devices in a ring topology stack. Each device in the stack is, in a stack context,

called a unit. The ports connecting the units are called stack ports, and the ports connecting to external hosts and switches are

called front ports.