User Manual

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4.19 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 devices may be connected together to constitute a ring or chain stack topology using the STX / 10Gbps SFP+ ports
as interconnect links. Dedicated stacking features built into IFS-NS4802-24P-4S 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 SFP+ stacking solution
 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.
1. Please note that from now on the stacking example images are coming from NS4802
,
however, as NS4802 stacking ports are on the front panel. View below is f
rom the
NS3601 which are not compatible with NS4802 Stacking Option.
2. if you remove one of switch from stacking group and causes stacking ID without
sequence, please re-assign stacking ID from “Stack Configuration“before you make
the other operation.
3. Stack ports are port27 and port28 and the stacking ports could be used for stacking
only, it can’t be set to “uplink”.