Cisco NIM-ES2-8 8-Port Layer 2 Gigabit Ethernet Switch Module

Description

The Cisco NIM-ES2-8 is an enterprise-grade 8-port Layer 2 Gigabit Ethernet Switch Network Interface Module (NIM) designed to expand LAN switching capabilities within compatible Cisco Integrated Services Router platforms.

Instead of requiring a separate standalone Ethernet switch, the NIM-ES2-8 integrates switching functionality directly into the supported router chassis. This makes it particularly useful for branch offices, small and medium-sized enterprise networks, and deployments where centralized router-and-switch management and efficient equipment utilization are important.

The module provides eight 10/100/1000BASE-T Gigabit Ethernet switch ports and uses a single-wide NIM form factor. Cisco identifies the NIM-ES2-8 as an 8-port Layer 2 Gigabit Ethernet switch module for its supported router platforms.

Key Features

• Model: Cisco NIM-ES2-8
• Product Type: Layer 2 Gigabit Ethernet Switch Network Interface Module
• Number of Ports: 8
• Port Speed: 10/100/1000 Mbps
• Ethernet Type: Gigabit Ethernet
• Switching Layer: Layer 2
• Form Factor: Single-wide NIM
• Interface: RJ-45 copper Ethernet
• Designed For: Compatible Cisco Integrated Services Routers
• MAC Address Table: Up to 4,000 entries
• Application: Enterprise LAN and branch-office networking

Eight Gigabit Ethernet Ports

The NIM-ES2-8 provides eight 10/100/1000 Ethernet switch ports, allowing multiple local network devices to connect directly to the host Cisco router.

The auto-negotiating Ethernet ports support 10 Mbps, 100 Mbps, and 1000 Mbps connectivity, allowing the module to accommodate a mixture of legacy Fast Ethernet and Gigabit Ethernet devices.

Typical connected devices can include:

• Desktop computers
• Network printers
• IP phones
• Wireless access points
• Servers
• Network appliances
• Security devices
• Other Ethernet-enabled endpoints

Integrated Layer 2 Switching

The NIM-ES2-8 provides Layer 2 switching capabilities within the router platform.

This allows connected devices to communicate across the local LAN while enabling network administrators to implement VLAN-based segmentation and other supported Layer 2 functions through Cisco IOS XE.

Cisco documentation describes the NIM-ES2-8 as providing Layer 2 switching features and a connection to the router’s multigigabit fabric for intermodule communication.

Efficient Branch-Office Deployment

The NIM-ES2-8 is particularly useful where organizations want to combine routing and LAN switching in a single physical platform.

Integrating the switch module into a compatible Cisco router can help:

• Reduce the number of standalone network devices
• Simplify branch-office equipment deployment
• Consolidate network infrastructure
• Reduce rack and cabinet requirements
• Centralize network management
• Expand the number of available LAN ports

This design is well suited to enterprise branch offices and distributed network environments.

Layer 2 Networking and VLAN Support

As a Layer 2 switch module, the NIM-ES2-8 can be used to create logical LAN segments using VLANs and supported Cisco switching features.

VLAN-based segmentation can help organizations separate different classes of traffic, such as:

• Corporate users
• Voice traffic
• Guest networks
• Management traffic
• Business applications
• Dedicated network services

The exact VLAN, trunking, spanning-tree, QoS, and other feature availability depends on the Cisco IOS XE release and host platform configuration.

4,000-Entry MAC Address Table

Cisco’s installation documentation specifies a maximum 4K-entry MAC address table for the Cisco 4-port and 8-port Layer 2 Gigabit EtherSwitch NIM family.

This allows the module to learn and maintain MAC addresses for connected network devices and forward Ethernet frames based on their destination addresses.

Single-Wide NIM Form Factor

The NIM-ES2-8 uses a single-wide Network Interface Module form factor, allowing it to be installed into a compatible Cisco router’s NIM slot.

Cisco specifies the NIM-ES2-8 dimensions as approximately:

0.8 × 6.2 × 4.8 inches
2.1 × 15.7 × 12.2 cm

Its integrated form factor makes it a practical option for expanding router-based LAN connectivity without deploying a separate chassis.

Enterprise Networking Applications

The Cisco NIM-ES2-8 can be used in a wide range of professional networking environments, including:

• Branch offices
• Small and medium-sized enterprise networks
• Retail locations
• Remote offices
• Corporate LANs
• Distributed enterprise networks
• Voice and data deployments
• Network infrastructure upgrades
• Cisco router expansions

It is particularly useful when additional local Ethernet ports are required on a compatible Cisco router.

Cisco IOS XE Integration

The NIM-ES2-8 is managed through the Cisco router platform and supported Cisco IOS software environment.

Cisco documentation states that the Gigabit Ethernet LAN Switch NIMs are supported in IP Base and later images, with no separate Cisco IOS software technology or feature licenses required for the switch module itself according to the referenced documentation.

Software and feature support can vary by router platform and IOS XE release, so administrators should verify the software requirements for their specific deployment.

Router Integration

The NIM-ES2-8 is designed to work as an integrated switching module rather than as a standalone Ethernet switch.

This architecture allows network administrators to manage routing and local switching functions through the Cisco router infrastructure.

Cisco documentation identifies the NIM-ES2-8 among the Ethernet switch NIMs supported by Cisco 4000 Series Integrated Services Router platforms.

Important: NIM-ES2-8 vs. NIM-ES2-8-P

The NIM-ES2-8 should not be confused with the NIM-ES2-8-P.

• NIM-ES2-8: 8-port Layer 2 Gigabit Ethernet switch module
• NIM-ES2-8-P: 8-port Layer 2 Gigabit Ethernet switch module with PoE/PoE+ support

If Power over Ethernet is required for IP phones, access points, cameras, or other powered devices, the PoE-capable model should be selected instead.

Technical Specifications

Specifications are based on Cisco’s published documentation for the NIM-ES2-8.

Ideal for Network Expansion

The NIM-ES2-8 is an excellent solution for organizations that need additional Ethernet connectivity without deploying an additional standalone switch.

It can expand the LAN port capacity of a compatible Cisco router while maintaining the benefits of an integrated networking architecture.

For businesses with distributed locations, this can simplify deployment and provide a compact solution for connecting local users and network equipment.

Installation and Compatibility

Before purchasing, customers should verify that their Cisco router has a compatible NIM slot and supports the NIM-ES2-8.

Cisco documentation lists compatibility across supported Cisco 4000 Series ISR platforms, with the number of supported modules varying by router model.

Compatibility should be confirmed against the exact router model, IOS/IOS XE release, and intended configuration before installation.

Product Benefits

8-Port Expansion

Adds eight Gigabit Ethernet switch ports to a compatible Cisco router.

Gigabit Performance

Supports 10/100/1000 Mbps Ethernet connections for flexible LAN deployment.

Integrated Switching

Provides Layer 2 switching directly within the router chassis.

Space Efficient

The single-wide NIM form factor eliminates the need for a separate switch chassis for basic local LAN expansion.

Enterprise Features

Supports Cisco Layer 2 networking capabilities suitable for professional LAN deployments.

Centralized Management

Allows the switch module to be managed as part of the Cisco router infrastructure.

Branch-Office Ready

Well suited for branch offices and distributed enterprise environments where network equipment consolidation is beneficial.

What’s Included

Recommended online-store listing:

• 1 × Cisco NIM-ES2-8 8-Port Layer 2 Gigabit Ethernet Switch Module

Any mounting accessories, cables, documentation, or additional components should only be listed as included if they are supplied with the actual inventory.

Compatibility Notice

The Cisco NIM-ES2-8 is a modular network component and is not a standalone Ethernet switch.

It requires installation in a compatible Cisco router/platform with an appropriate NIM slot.

Customers should verify compatibility with their exact Cisco router model and software version before ordering.

The NIM-ES2-8 is also not the PoE version. Customers requiring PoE should consider the NIM-ES2-8-P instead.

Product Summary

The Cisco NIM-ES2-8 8-Port Layer 2 Gigabit Ethernet Switch Module provides a practical way to expand LAN connectivity within compatible Cisco Integrated Services Router platforms.

With eight 10/100/1000 Mbps Ethernet ports, Layer 2 switching, a single-wide NIM form factor, and support for up to 4,000 MAC table entries, it is designed for enterprise branch-office and integrated routing-and-switching environments.

It is an ideal choice for Cisco router upgrades, LAN expansion, branch-office deployments, enterprise networking, infrastructure consolidation, and replacement of existing NIM-ES2-8 modules.

Brand: Cisco
Model: NIM-ES2-8
Ports: 8 × 10/100/1000 Ethernet
Switching: Layer 2
Form Factor: Single-wide NIM
MAC Table: Up to 4,000 entries
PoE: No
Primary Use: Enterprise LAN Expansion & Branch Networking