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Cisco WS-C3750G-12S-SD Switch Overview
WS-C3750G-12S-SD belongs to the Cisco Catalyst 3750 Series Switches; it widely used in the campus local area network (LAN) access. Cisco Catalyst 3750G-12S switch is innovative switch that improve LAN operating efficiency by combining industry-leading ease of use and the highest resiliency available for stackable switch. This product 3750G-12S features Cisco StackWise technology which is a 32 Gbps stack interconnect that allows customers to build a unified, highly resilient switching system-one switch at a time.
Cisco WS-C3750G-12S-SD Switch Parameters
| Device Type | Switch - Managed - stackable |
| Enclosure Type | Rack-mountable 1U |
| Subtype | Gigabit Ethernet |
| Ports | 12 x SFP |
| MAC Address Table Size | 12K entries |
| Remote Management Protocol | SNMP, RMON, HTTP |
| Features | Full duplex capability, IP-routing, DHCP support, ARP support, VLAN support, IGMP snooping, manageable, stackable |
| Compliant Standards | IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s |
| Power | DC -36 -72 V |
Dimensions (WxDxH) | 44.5 cm x 32.6 cm x 4.4 cm |
| Weight | 4.6 kg |
Optical Transceivers for Cisco WS-C3750G-12S-SD Switch
Based on the SFP (optical module form factor) Gigabit Ethernet ports accommodate range SFP (optical module form factor) optical transceivers, including Cisco 1000BASE-T, 1000BASE-SX, 1000Base-LX/LH, 1000BASE-ZX. For more information on these Cisco optical transceivers, please check the following table.
| MFG Part number | Description | Price |
| GLC-T | Cisco GLC-T Compatible 1000BASE-T SFP Copper RJ-45 100m Transceiver | US$13.02 |
| GLC-TE | Cisco GLC-TE Transceiver Module Compatible 1000M SFP Copper 100m | US$13.02 |
| GLC-LH-SM | Cisco GLC-LH-SM Compatible 1000Base-LX/LH SFP 1310nm 10km Transceiver | US$7.00 |
| GLC-LH-SMD | Cisco GLC-LH-SMD Compatible 1000Base-LX/LH SFP 1310nm 10km DOM Transceiver | US$7.00 |
| GLC-SX-MM | Cisco GLC-SX-MM-RGD Compatible 1000BASE-SX SFP 850nm 550m DOM Transceiver | US$6.00 |
| GLC-SX-MMD | Cisco GLC-SX-MMD Compatible 1000BASE-SX SFP 850nm 550m DOM Transceiver | US$6.00 |
| GLC-ZX-SM | Cisco GLC-ZX-SM Compatible 1000BASE-ZX SFP 1550nm 70km Transceiver | US$24.00 |
| GLC-ZX-SMD | Cisco GLC-ZX-SMD Compatible 1000BASE-ZX SFP 1550nm 70km DOM Transceiver | US$24.00 |
| GLC-BX-D | Cisco GLC-BX-D Compatible 1000BASE-BX-D SFP 1490nm-TX/1310nm-RX 10km DOM Transceiver | US$12.00 |
| GLC-BX-U | Cisco GLC-BX-U Compatible 1000BASE-BX-U SFP 1310nm-TX/1490nm-RX 10km DOM Transceiver | US$9.00 |
| CWDM SFP | 1.25G CWDM SFP 1270~1450nm 120km LC DDM Optical Transceiver | US$55.00 |
| SFP-GE-S | Cisco SFP-GE-S Compatible 1000BASE-SX SFP 850nm 550m DOM Transceiver | US$6.00 |
| SFP-GE-L | Cisco SFP-GE-L Compatible 1000BASE-LX/LH SFP 1310nm 10km DOM Transceiver | US$7.00 |
| SFP-GE-T | Cisco SFP-GE-T Compatible 1000BASE-T SFP Copper RJ-45 100m Transceiver | US$13.02 |
| SFP-GE-Z | Cisco SFP-GE-Z Compatible 1000BASE-ZX SFP 1550nm 70km DOM Transceiver | US$24.18 |
| DWDM SFP | 1.25G DWDM 80km SFP Transceiver 1528~1564nm LC SM Duplex DDM Optical Module | US$186.00 |
Note: Cozlink compatible with Cisco optical module. For more information, please feel free to contact us.
How to determine what types of optical transceivers for Cisco switches?
1. Finding the corresponding optical module compatibility matrix via Cisco official website.
2. On the running switches, enter the privileged mode and input # "show idprom interface gi1 / 0/48" command, you can query the optical module model and serial number, If not, try to input other two commands: xuxic or show idprom int g2/6
3. Checking the type and port based on the specification, it can be used as long as it is gigabit SFP optical module interface. But the specific models to be decided according to the actual demand, such as type, the actual use of distance, single-mode or multimode, single fiber or dual fiber etc. Welcome to consult Cozlink engineer.
Summary
The Cisco WS-C3750G-12S-SD uses Gigabit Ethernet SFP optical transceivers to establish fiber optic connections. These transceiver transceivers are field-replaceable, and provide uplink interfaces when inserted in an SFP module slot. This high quality Cisco switch works with a number of Gigabit Ethernet SFP optical transceivers. You can easily find these high quality fiber optic transceivers at very competitive rates on Cozlink. What makes this even better that Cozlink also offer you a wide range of patch cords, fiber optic pigtails and high speed cables to choose from and Cozlink also ensure that you get the same day shipping.
