
Features
1-2 Introduction
Figure 1-2 G3G124-24 Switch (rear view) with 1200 and 400-watt power supplies installed
Features
TheG‐Seriesswitchesincludethefollowingfeatures:
•Abasesystem(chassis)containingfixedinterfacesinthelowerleftfrontpanel
–24RJ45(10/100/1000Mbps,100 0BASE‐TXcopper)portsplus2comboSFPports(G3G124‐
24andG3G124‐24P)
–24SFPports(G3G170‐24)
•Input/OutputModules(IOMs)
TherearethreeI/Oslotsonthefront
oftheG‐Seriesswitch,eachofwhichcanbepopulated
withtheavailableIOMs.IOMscanbeinsertedorremovedwhenpowerissuppliedtothebase
systemwithoutimpactingothermodules.TheIOMsavailablefortheG3basesystemsare:
–G3G‐24TX,a24‐10/100/1000copperportand2
comboportSFPmodule
–G3G‐24SFP,a24‐portSFPmodule
–G3K‐2XFP,a2‐portXFPmodule
–G3K‐4XFP,a4‐portXFPmodule
1 AC power inlet 5 Memory slot with coverplate (reserved for future use)
2 PWR Slot 2 with 1200-watt power supply 6 Password reset button
3 PWR Slot 1 with 400-watt power supply 7 Optional module slot (reserved for later use)
4
Captive screw
Notes: Each combo SFP port on the G3G124-24, G3G124-24P or G3G-24TX supports the
installation of Mini-GBICs for 1000Base-SX, 1000Base-LX, 100Base-FX or 1000Base-T copper
SFP transceivers.
Each combo SFP port in use on these 10/100/1000 base systems or the G3G-24TX module
eliminates the availability of one RJ45 port. In other words, only 24 ports per slot can be active at
any given time on components equipped with a combination of RJ45 and SFP interfaces. When an
SFP transceiver (Mini-GBIC) SFP port 23 establishes a link, RJ45 port 23 is disabled. When an
SFP transceiver (Mini-GBIC) in SFP port 24 establishes a link, RJ45 port 24 is disabled.