Skip to content


by Cisco
Product Line: Cisco Small Business Smart Switches
Product Type: SMDES248 Smart Managed Switch
Original price $668.00 - Original price $768.00
Original price
$668.00 - $768.00
Current price $668.00
Title: Used

Orders typically ship within 1-3 Business days, if you need an item to ship sooner please contact us.

Product Description

The SM-D-ES2-48 is a double wide Ethernet switch module with 48 ports supporting 10/100 Mbps speed, designed for integration with Cisco routers including the Cisco 3945, Cisco 3925, Cisco 2951, and Cisco 2921. It features Layer 2 capabilities, Fast and Gigabit Ethernet connections via RJ-45 connectors, and supports both half and full duplex operations with autonegotiation for speed and duplex settings. The module offers trunk and SFP support, configured through the Cisco Command-Line Interface, making it suitable for connecting a variety of devices including Cisco IP phones and wireless access points.

Key Feature for the SMDES248

  • What is the port speed of the Ethernet ports?
    The Ethernet ports support speeds of 10/100 Mbps.
  • Does the device support Layer 3 functionality?
    No, the device operates at Layer 2 only.
  • Can the device provide power over Ethernet (PoE)?
    No, this device does not support PoE.
  • Which routers are compatible with this device?
    It is compatible with Cisco 3945, Cisco 3925, Cisco 2951, and Cisco 2921 routers.
  • Does the device offer Gigabit Ethernet connections?
    Yes, it supports Gigabit Ethernet connections via RJ-45 connectors.
  • Is trunk support available on this device?
    Yes, trunk support is available.
  • Does the device have SFP support?
    Yes, SFP support is included.
  • How can the device be configured?
    Device configuration is supported through the Cisco Command-Line Interface.
  • How are the ports numbered on the device?
    Ports are numbered from right to left, top to bottom.
  • What are the LED states for the enable and port LEDs?
    The enable LED has 3 states, and the port LED has 6 states.

Product Review

The Cisco SM-D-ES2-48 module offers 48 Ethernet ports supporting speeds up to 100 Mbps, suitable for connecting a variety of devices including Cisco IP phones and wireless access points. While it provides Layer 2 functionality and supports both Fast and Gigabit Ethernet connections, it lacks Layer 3 capabilities and does not support Power over Ethernet (PoE), limiting its use in environments requiring advanced routing features or power delivery over Ethernet. Additionally, its support for SFP modules, trunking, and auto-negotiation of port speed and duplex settings enhances its flexibility in network design and integration into supported Cisco routers.


The Cisco SM-D-ES2-48 is a highly versatile Ethernet switch module designed for integration with specific Cisco routers, including the Cisco 3945, Cisco 3925, Cisco 2951, and Cisco 2921 models. This module enhances the connectivity capabilities of these routers by providing additional Ethernet ports for network expansion. The SM-D-ES2-48 is characterized by its double-wide form factor, fitting seamlessly into compatible router slots to expand network infrastructure without the need for external switches. Equipped with 48 Ethernet ports, this module facilitates both Fast Ethernet and Gigabit Ethernet connections through RJ-45 connectors, enabling a wide range of network speeds from 10 to 100 Mbps. Each port supports half or full duplex operation, allowing for flexible network configurations based on specific bandwidth and transmission needs. The port setup features autonegotiation for speed and duplex settings, optimizing performance without manual configuration. Despite its extensive capabilities, the SM-D-ES2-48 does not support Power over Ethernet (PoE), limiting its use to devices that do not require power supply over Ethernet cabling. However, it compensates with robust support for Layer 2 features, although it lacks Layer 3 functionality. This focus on Layer 2 allows for efficient local network management and configuration, including trunk support for aggregating multiple network links into a single logical link. Key specifications include: -
  • SFP (Small Form-factor Pluggable) support for fiber connectivity options, enhancing the module's versatility in connecting to distant network segments or high-speed network backbones.
  • Trunk support, enabling the aggregation of several physical links into a single logical link for improved bandwidth and network redundancy.
  • Configuration via the Cisco Command-Line Interface (CLI), offering precise control over network settings and the ability to script and automate configuration tasks.
The module also features comprehensive LED indicators for port and system status. Each port is equipped with an LED that can display up to six different states, providing immediate visual feedback on port activity, speed, and link status. Additionally, the module includes an Enable LED with three states, offering at-a-glance information about the module's operational status. Designed for direct connection to a range of network devices, including Cisco IP phones, wireless access points, and workstations, the SM-D-ES2-48 serves as a critical component in creating a cohesive, efficient network environment. Its configuration support ensures that network administrators can tailor the module to meet specific network requirements, leveraging the Cisco CLI for detailed setup and management. The physical layout of the module, with port numbering from right to left and top to bottom, is designed for intuitive connection and maintenance, ensuring that network expansions or modifications can be performed with minimal disruption. In summary, the Cisco SM-D-ES2-48 Ethernet switch module is a key component for network administrators seeking to expand the connectivity options of compatible Cisco routers. With its comprehensive range of Ethernet port capabilities, Layer 2 support, and flexible configuration options, it represents a critical tool for enhancing network performance and reliability.


Item CodeCisco SM-D-ES2-48
Total Ports48
Type of PortsEthernet
Port Velocity10/100 Mbps
Module ShapeDouble Wide
Support for Layer 2Yes
Support for Layer 3No
Capability for Power over EthernetNo
Compatible RoutersCisco 3945, Cisco 3925, Cisco 2951, Cisco 2921
Capability for Fast EthernetYes, Via RJ-45 Connectors
Capability for Gigabit EthernetYes, Via RJ-45 Connectors
Support for Link AggregationYes
Compatibility with SFP ModulesYes
Availability of a Physical Management InterfaceNo
Operational Modes of PortsHalf Duplex, Full Duplex, 10 Mbps, or 100 Mbps
Automatic Configuration of Speed and DuplexYes
Indicator for ActivationYes
Indicator Lights for PortsYes
Variants for Activation Indicator3
Variants for Indicator Lights on Ports6
Usage ScenariosConnecting Cisco IP phones, wireless access points, workstations, and various network peripherals
Support for ConfigurationYes
Configuration ProcedureThrough Cisco Command-Line Interface
CLI Verification Code508
Orientation of Port NumbersRight to Left, Top to Bottom

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare