For a wireless client computer to communicate with a correspondent host on the Internet by the host’s domain name (e.g. http://www.wi-fi.com), it first sends a DNS request to a DNS server on the Internet. The DNS request trav- els first to the AP, then the AP relays this request to the default gateway of the client computer. Finally, this request is forwarded by the gateway to the DNS server on the Internet. The DNS reply issued by the DNS server is transmitted back to the client computer following a reverse path. When the client computer receives the DNS reply, it knows the IP address of the corre- spondent host and sends further packets to this IP address.

As illustrated in Fig. 110, the communication path could be broken at some of the stages. The OS-provided network diagnostic tool, ping.exe, can be employed to find out TCP/IP-related communication problems.

NOTE: If two or more NICs are installed and operating on a client computer, TCP/IP may not work properly due to incorrect entries in the routing table. Use the OS-provided command-line network tool, route.exe, to add or delete entries from the routing table. Or, use Windows-provided Device Manager to disable unnecessary NICs.

Solve the following problems in order:

•My SMC2586W-G does not respond to ping from the client computer.

•Are two or more NICs installed on the client computer?

•Use Windows-provided Device Manager to disable unnecessary NICs.

•Is the underlying link (Ethernet or IEEE 802.11g) established?

•Make sure the Ethernet link is OK.

•Make sure the wireless settings of the wireless client computer and of the SMC2586W-G match.

•Are the IP address of the client computer and the IP address of the SMC2586W-G in the same IP subnet?

•Use WinIPCfg.exe or IPConfig.exe to see the current IP address of the client computer. Make sure the IP address of the client computer and the IP address of the SMC2586W-G are in the same IP subnet.

TIP: If you forget the current IP address of the SMC2586W-G, use Wireless Router/AP Browser to get the information (see Appendix B-3).use the SMC Scan utility that is on the CD.

•The DNS server(s) of the client computer do not respond to ping from the client computer.

•Solve the preceding problems first.

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SMC2586W-G specifications

SMC Networks SMC2586W-G is a versatile wireless router designed to meet the connectivity needs of both home and small office environments. This device combines reliable performance with user-friendly features, ensuring a seamless internet experience for various applications, including streaming, gaming, and online work.

One of the standout features of the SMC2586W-G is its dual-band capabilities, offering both 2.4 GHz and 5 GHz bands. The dual-band functionality allows users to optimize their wireless networks by connecting devices to the band that best suits their needs. The 2.4 GHz band provides extended coverage and better penetration through walls, making it ideal for general web browsing and older devices. In contrast, the 5 GHz band offers faster speeds and less interference, perfect for high-bandwidth activities such as video streaming and online gaming.

In terms of throughput, the SMC2586W-G supports the 802.11ac standard, delivering impressive speeds of up to 1.75 Gbps under optimal conditions. This high-speed capability enhances overall network efficiency, allowing multiple devices to connect simultaneously without compromising performance. With four Gigabit Ethernet ports, the router also facilitates reliable wired connections for devices that require minimal latency, such as gaming consoles and desktop computers.

Security is a critical aspect of any network solution, and the SMC2586W-G excels in this area. It features advanced encryption protocols, including WPA2-PSK, to protect user data from unauthorized access. Additionally, the router supports a robust firewall and an Integrated Virtual Private Network (VPN) pass-through for enhanced privacy during internet use.

Installation and setup are straightforward with the SMC2586W-G, thanks to its web-based interface and WPS (Wi-Fi Protected Setup) button. These features allow users to easily customize settings, manage connected devices, and secure their networks with minimal hassle.

Overall, the SMC Networks SMC2586W-G router combines innovative technologies, user-friendly features, and robust performance, making it an excellent choice for users seeking reliable wireless connectivity in their homes or small offices. Whether it's for browsing, streaming, or gaming, this router delivers a balanced experience that meets the demands of modern internet users.
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