What are the uplink port configurations on the Cisco Catalyst 3120G?

It features up to 8 external Gigabit Ethernet uplinks: 4x 10/100/1000BASE-T RJ-45 ports (two configurable for crossover failover) and 4x SFP Gigabit Ethernet ports using TwinGig Converter Modules in X2 slots. Supports Cisco SFP modules for fiber SX/LX connectivity with wire-speed performance at 59.2 Mpps.

Is this switch compatible with HPE BladeSystem?

Yes, the WS-CBS3120G is designed specifically for HPE BladeSystem c-Class enclosures as a blade switch. It integrates 16 internal 1Gb ports to servers, powered by the chassis, and supports Virtual Blade Switch stacking up to nine units for redundant top-of-rack emulation.

What management features does it support?

Managed via Cisco IOS Software with CLI console, SNMP v1/v2c/v3, Telnet. Includes security like ACLs, authentication, port security; QoS with 802.1p/DSCP; jumbo frames to 9018 bytes; and RSPAN for remote monitoring across stacked switches.

What are the environmental operating conditions?

Operates at 0 to 43°C (32 to 109°F), 10 to 85% non-condensing humidity; stores at -20 to 70°C (-4 to 158°F). Weighs 1.27 kg, powered by HPE enclosure with no internal PSUs, and features UID, Health, and port LEDs for status.

Does it support Layer 3 features?

As a Layer 2/3 switch, it supports basic IP unicast routing (Static, RIPv1/v2) and advanced protocols like OSPF, EIGRP, BGPv4 for load balancing in scalable LANs, alongside full Layer 2 capabilities like spanning tree and QoS.

What is the performance specification?

Offers wire-speed switching on 16 internal 1Gb ports and 8 uplinks, with 59.2 Mpps forwarding (64-byte packets), 256 MB DDR SDRAM, 64 MB Flash, and configurable MTU up to 9018 bytes for jumbo frames in data/video applications.

WS-CBS3120G - HPE Catalyst Blade Switch 3120G for HP Up to 8 Gigabit Ethernet uplinks: 4x 10/100/1000BASE-T; 4x SFP Gigabit Ethernet using TwinGig

Name: WS-CBS3120G - HPE Catalyst Blade Switch 3120G for HP Up to 8 Gigabit Ethernet uplinks: 4x 10/100/1000BASE-T; 4x SFP Gigabit Ethernet using TwinGig
Brand: HPE
SKU: WS-CBS3120G

WS-CBS3120G - HPE Catalyst Blade Switch 3120G for HP Up to 8 Gigabit Ethernet uplinks: 4x 10/100/1000BASE-T; 4x SFP Gigabit Ethernet using TwinGig | US IT Hardware

Product overview

The Cisco Catalyst Blade Switch 3120G (SKU: WS-CBS3120G) is a Layer 2/3 Ethernet blade switch designed for HPE BladeSystem c-Class enclosures. It provides up to 8 external Gigabit Ethernet uplinks: 4x 10/100/1000BASE-T RJ-45 ports and 4x SFP ports via TwinGig Converter Modules in X2 slots. Powered by the HPE blade enclosure, it weighs 1.27 kg and supports wire-speed switching at 59.2 Mpps with 256 MB DDR SDRAM and 64 MB Flash. Operating temperature ranges from 0 to 43°C, with storage up to 70°C and 10-85% humidity. Management via Cisco IOS includes ACLs, authentication, and port security. Status LEDs cover UID, health, and ports 19-22. It enables stacking up to nine switches into a Virtual Blade Switch for resilient, scalable connectivity, reducing cabling and complexity in blade server environments. Ideal for enterprise data centers requiring high-performance server edge switching.

8x Gigabit uplinks: 4x BASE-T + 4x SFP via TwinGig
Wire-speed 59.2 Mpps, jumbo frames to 9018 bytes
Cisco IOS: ACLs, QoS, port security, VBS stacking
HPE BladeSystem form factor, 1.27 kg weight
0-43°C operation, 10-85% humidity tolerance
256 MB DRAM, 64 MB Flash for robust performance

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	WS-CBS3120G
Brand	HPE
Condition	New
Model	Catalyst Blade Switch 3120G for HP
Product Line	Catalyst Blade Switch 3120 Series
Product Type	Layer 2/3 Ethernet Blade Switch for blade servers
SNMP Support	v1, v2c, v3
Management Interface	Cisco IOS Software; supports ACLs, authentication, port-level security

Storage

Flash Memory
SDRAM	256 MB

Compatible systems

Compatible with HPE BladeSystem c7000 and c3000 enclosures

HPE BladeSystem
Model: c-Class
Form factor: Blade Enclosure
Generation: c7000, c3000
Designed for HPE blade server environments

Best for

Blade Server Connectivity
Provides 16 internal 1Gb ports to blade servers and 8 external Gigabit uplinks for seamless integration in HPE chassis, supporting wire-speed performance.
Data Center Edge Switching
Emulates redundant top-of-rack switching with Virtual Blade Switch stacking up to nine units, reducing cabling and management overhead via Cisco IOS.
Virtualized Environments
Supports jumbo frames up to 9018 bytes and QoS for high-bandwidth applications, with SFP flexibility for copper/fiber uplinks.
Secure Enterprise Networking
Features ACLs, port security, and authentication for controlled access in enterprise blade infrastructures.

Frequently asked questions

Details

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Forwarding Rate	59.2 Mpps
Switching Capacity	128 Gbps
Maximum Transmission Unit	9018 bytes (jumbo frames)

Power Supplies	Powered by HPE blade enclosure; no internal PSUs

Weight	1.27 kg (2.8 lbs)
Form Factor	Blade switch for HPE blade server chassis
Status LEDs	UID LED; Health LED; LEDs for ports 19-20, 21-22

Storage Temperature	-20 to 70°C (-4 to 158°F)
Operating Temperature	0 to 43°C (32 to 109°F)
Operating Relative Humidity	10 to 85% (non-condensing)

Interface/Ports

Console Port	1x Console Port
Ethernet Ports	Up to 8 Gigabit Ethernet uplinks: 4x 10/100/1000BASE-T; 4x SFP Gigabit Ethernet using TwinGig Converter Modules in X2 slots
Internal Ports	16 x 1Gb
Network Interfaces	Gigabit Ethernet uplinks with SFP support; X2 slots for TwinGig or 10GbE modules

HPE Catalyst Blade Switch 3120G for HP Up to 8 Gigabit Ethernet uplinks: 4x 10/100/1000BASE-T; 4x SFP Gigabit Ethernet using TwinGig