Interlogix GE-DSSG-244, Руководство пользователя

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IFS NS3601-24P/4S GE-DSSG-244 and 244-POE User Manual
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4.17 Stack
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 IFS series 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 IFS series 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.
Chain Stack:
A chain of switches, that is, no redundant forwarding paths.
Figure 4-17-1
Chain Stack topology
„
Ring Stack:
A ring of switches, thereby providing redundant forwarding paths.