Cisco ME-3400EG-12CS-M Managed Ethernet Access Switch

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The Cisco ME-3400EG-12CS-M is a managed Ethernet access switch designed for enterprise and service-provider environments that require flexible copper and fiber connectivity. As part of the Cisco ME 3400E Series, this switch combines performance, reliability, and modularity for edge and access-layer deployments.

It features 12 dual-purpose Gigabit Ethernet ports, each configurable as either a 10/100/1000 Mbps RJ-45 copper port or an SFP fiber port, along with 4 dedicated SFP-based Gigabit Ethernet / 100BASE-X uplink ports. This design allows network administrators to adapt connectivity based on site requirements without replacing hardware.

With Cisco IOS-based management, the ME-3400EG-12CS-M supports advanced switching features such as VLAN segmentation, Quality of Service (QoS), multicast handling, and optional Layer 3 capabilities, making it suitable for carrier Ethernet access, aggregation, and enterprise edge networks.

Key Features – Cisco ME-3400EG-12CS-M

• Ports:
 o 12 dual-purpose ports (10/100/1000 Mbps RJ-45 or SFP)
 o 4 × SFP-based Gigabit Ethernet / 100BASE-X ports

• Port Flexibility:
 o Dual-purpose design allows copper or fiber on the same physical port

• Switch Type:
 o Managed Ethernet switch (Layer 2 with optional Layer 3 features)

• Management:
 o Cisco IOS software
 o CLI, SNMP, VLANs, QoS, multicast support

• Memory:
 o 128 MB RAM
 o 32 MB flash memory

• MAC Address Table:
 o Approximately 8,000 entries

• Form Factor:
 o 1U rack-mountable or desktop installation

• Reliability:
 o Supports field-replaceable power supply options for improved uptime

Use Cases

• Carrier Ethernet access and aggregation networks
• Enterprise branch and campus edge switching
• Mixed copper and fiber access environments
• Managed access networks requiring QoS and VLAN control

Technical Specifications

• Device Type: Managed Ethernet access switch
• Switching Mode: Layer 2 (Layer 3 optional via software)
• Copper Ports: Up to 12 × 10/100/1000 Mbps
• Fiber Ports: Up to 16 total SFP ports (depending on configuration)
• RAM: 128 MB
• Flash: 32 MB
• MAC Address Capacity: ~8K

Physical Specifications

• Height: Approx. 1.75 in
• Rack Units: 1U
• Width: Approx. 17.5 in
• Depth: Approx. 12 in
• Weight: Approx. 8.6 lbs

Ideal For

• Service providers delivering Ethernet access services
• Enterprise networks requiring flexible port options
• Edge and aggregation layers in managed network environments
• Deployments requiring long-term reliability and modular design

Warranty

• Standard Cisco manufacturer warranty
• Eligible for Cisco support and service contracts (as applicable)

FAQs – Cisco ME-3400EG-12CS-M

Q1: What is a dual-purpose port?
A1: A dual-purpose port can function as either a copper RJ-45 Ethernet port or an SFP fiber port, allowing flexible deployment based on cabling needs.

Q2: How many total ports are available on this switch?
A2: The switch includes 12 dual-purpose ports and 4 dedicated SFP uplink ports, supporting a mix of copper and fiber connections.

Q3: Is this switch suitable for enterprise use?
A3: Yes. It supports VLANs, QoS, and full management features, making it suitable for enterprise edge and access networks.

Q4: Does this switch support Layer 3 routing?
A4: By default, it operates as a Layer 2 switch. Optional software features can enable Layer 3 capabilities depending on deployment requirements.

Q5: Can the switch be rack-mounted?
A5: Yes. The ME-3400EG-12CS-M is a 1U rack-mountable switch and can also be used in desktop installations.

Q6: What type of environments is this switch best suited for?
A6: It is ideal for carrier Ethernet, enterprise access networks, and environments requiring both copper and fiber connectivity.