The HWIC-4ESW EtherSwitch 10/100 high-speed card interface WAN HWIC supported on Cisco 1800 (Modular) / 1941 Cisco 2800/2900, 3800/3900 series and Cisco integrated services routers offer small businesses to large customers and branch offices an option to adapt switching and routing in one device. This combination enables ease of configuration, deployment and management while using the strong characteristics of Cisco routing and Cisco Catalyst Switch Cisco EtherSwitch HWIC modular features.

They are capable of providing line-rate Layer 2 switching between Ethernet ports using Cisco IOS Catalyst Software. Features such as autonomous port detection, Quality of Service, VLAN support from 802.1p and 802.1Q standards, and 802.1D Spanning Tree protocols are standard feats on the Cisco EtherSwitch HWIC. Cisco EtherSwitch HWIC is available in standard 4 or 9 – port 10/100BASE-TX switch HWIC and Power-over-Ethernet configurations. 4-port Cisco EtherSwitch HWIC has four 10/100 Ethernet ports on the top, with capabilities for inline power support for all four ports. 9-port Cisco EtherSwitch HWIC has nine on 10/100 Ethernet ports, with options for inline power support for 8 and 9 gates. The ninth port does not support inline power but is enabled to be used as a regular switch port for the cable channels and other standard data applications.

The PoE configurations consist of a 4- or 9-port 10/100 BASE-TX and a 4 – or 8-port card inline power daughter module. The power module daughter card houses a power controller for detection, classification, and allow the power to 802.3af powered devices attached to the HWIC's. The online version of power Cisco EtherSwitch HWIC can power Cisco IP phones, Cisco wireless access points, or any IEEE 802.3af compliant device. Support for optional power line 4 – and 9-port Cisco HWIC 2800/2900 and 3800/3900 series routers Cisco integrated services requires the use of a field replaceable power line.

A HWIC-4ESW in a branch office's data deployment provides the flexibility to integrate routing and switching functions in one unit for low port density. This deployment provides high-speed connections between computers, servers and other network resources in a single unit of Layer 2 and allows WAN connection at Layer 3 router. 4- or 9-port Cisco EtherSwitch HWIC when combined with voice modules for analog or digital Cisco Integrated Services give the enterprise infrastructure deployments small and large branches of IP telephony. This solution can be combined with Cisco CallManager Express IP phone or Cisco IOS Survivable Remote Site Telephony. SRST runs on the local branch of the router, allowing it to automatically detect a network failure, and initiate a process of intelligence to automatically configure the router to provide call processing redundancy backup for IP phones in the office. In the case of an implementation of CallManager Express, the call processing functions are available on the branch router without a call manager.

HWIC-4ESW-POE optional internal chassis provides IP phone power and phone discovery for IP phones. In addition, the HWIC-4ESW-POE supports different VLAN settings for IP phones. Auxiliary VLAN feature allows network administrators to segment phones in different logical networks, even if the data and voice infrastructures are physically the same. This feature allows the discovery of Cisco 4- and 9-port EtherSwitch HWIC (code HWIC-4ESW-POE or HWIC-D-9ESW-POE) to automatically detect the IP phone and power line. 4 – and 9-port Cisco EtherSwitch HWIC 10/100Base-T managed Layer 2 switch HWIC form factor for Cisco Integrated Services Router. 4-port HWIC form factor will be a 9-port HWIC size and in double-width form factor. The switch supports IEEE 802.1D Spanning Tree Protocol and can connect up to 4 or 9 local area networks up to 15 IEEE 802.1Q-based VLAN (802.1Q).

Note: Both HWIC 4- and 9-port HWIC support up to 15 VLANs. They can also be optionally configured to provide 4 or 8 port 802.3af inline power or Cisco PoE equipment. PoE support is not available for the Cisco 1841.

Source by Alex Rist