Cisco EHWIC-D-8ESG-P | 8-Port Gigabit PoE WAN Module

Cisco EHWIC-D-8ESG-P Performance & Technical Details

Cisco EHWIC-D-8ESG-P represents a significant advancement in branch-office network consolidation. By integrating an 8-port Gigabit switch directly into the router’s interface slots, organizations can deliver high-speed data and power to the edge of their network without the expense or rack-space requirements of external standalone switches.

High-Performance Switching

This module offers 16 Gbps of non-blocking switching capacity, ensuring wire-speed performance across all eight ports. Whether you are transferring large files, streaming high-definition video, or running latency-sensitive VoIP applications, the EHWIC-D-8ESG-P handles heavy traffic loads with enterprise-grade stability.

Advanced Power over Ethernet (PoE) & ePoE

Engineered for modern converged networks, this module supports:

• Standard PoE (IEEE 802.3af): Provides up to 15.4W per port for standard IP phones and security cameras.

• Cisco Enhanced PoE (ePoE): Delivers up to 20W per port, supporting higher-power devices like high-end wireless access points or specialized sensors.

• Intelligent Power Management: Integrated with Cisco EnergyWise, allowing administrators to monitor and control power usage at the port level to reduce energy costs across the branch.

Enterprise-Grade Layer 2 Features

• Network Segmentation: Supports up to 64 VLANs (platform dependent) with IEEE 802.1Q trunking, allowing for strict isolation of guest, voice, and internal data traffic.

• Redundancy: Full support for Spanning Tree Protocol (STP) and PVST+ to prevent network loops and ensure path redundancy.

• Quality of Service (QoS): Uses 802.1p CoS tagging to prioritize mission-critical voice and video traffic over standard data.

• Security: Features 802.1X port-based authentication and secure MAC address filtering (up to 8,000 entries) to prevent unauthorized network access at the physical layer.

Technical Specifications

Frequently Asked Questions (FAQs)

1. Does the EHWIC-D-8ESG-P support hot-swapping? No. The EHWIC-D-8ESG-P is not hot-swappable. You must power down the router before installing or removing the module to avoid damaging the hardware or the router backplane.

2. Why are my ports not providing power to my IP phones? PoE functionality requires the host router to have an internal PoE power supply installed (such as the AC-POE model). Without this internal power source, the card functions only as a standard data switch.

3. What is the difference between the EHWIC-D-8ESG and EHWIC-D-8ESG-P? The “-P” version includes hardware support for Power over Ethernet (PoE). The standard EHWIC-D-8ESG version provides the same 8 Gigabit ports but lacks the circuitry to power connected devices.

4. Can I use this card in a Cisco 1921 router? Yes, however, the 1921 only has two EHWIC slots. Since this is a double-wide card, it will occupy both available slots, preventing the installation of any other interface modules.

5. How do I verify the module is correctly recognized by the system? Once the router is powered on, use the Cisco IOS command show diag or show interfaces status to confirm the ports are recognized and active within the chassis.