MRV Communications MR2228-S2C User Manual download pdf (Page 21)

Installing an Optional SFP Transceiver

Figure 3-5. Installing an SFP Transceiver into a slot

To install an SFP transceiver, do the following:

1. Consider network and cabling requirements to select an appropriate SFP

transceiver type.

2. Insert the transceiver with the optical connector facing outward and the slot

connector facing down. Note that SFP transceivers are keyed so they can only be

installed in one orientation.

3. Slide the SFP transceiver into the slot until it clicks into place.

Note: SFP transceivers are hot-swappable. The switch does not need to be

powered off before installing or removing a transceiver. However, always first

disconnect the network cable before removing a transceiver.

Connecting Switches in a Stack

Figure 3-6 shows how the stack cables are connected between switches in a

stack. The connection uses only Category 5 Ethernet cables. The switch supports

a line- and ring-topology stacking configuration, or can be used stand alone.

In line-topology stacking, there is a single stack cable connection between each

switch that carries two-way communications across the stack. In ring-topology

stacking, an extra cable is connected between the top and bottom switches

forming a “ring” or “closed-loop.” The closed-loop cable provides a redundant path

for the stack link, so if one link fails, stack communications can be maintained.

Figure 3-6 illustrates a ring-topology stacking configuration.

To connect up to eight switches in a stack, perform the following steps:

1. Enable the stacking ports on each unit (i.e., the Stack button pushed out)

Note: Pressing the Stack button during normal operation will cause the system to

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MRV Communications MR2228-S2C User Manual Page 21