MRV Communications MR2228-S2C - Manual (Page 21)

17
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