Here is a glossary of terms used in router administration and network troubleshooting. Understanding these terms will help you in the task.

DNS (Domain Name Service)
The hierarchical storage service translates domain names into IP addresses. Every time a domain name is used, a DNS service would convert the name into the corresponding IP address. The system involves a network of servers who correspond with each other until they arrive on the correct IP address.

Ethernet (MAC) Address
This is a 48-bit number with hexadecimal digits for Layer 2 networking maintained by IEEE (The Institute of Electrical and Electronics Engineers). The digits are hardwired into network adapters.

TCP/IP (Transmission Control Protocol/Internet Protocol)
This is a protocol for identifying devices and grouping them into networks. The current version of IP is IPv4 (a series of four numbers separated by dots). IPv6, the new version, is under development.

Router (Gateway)
The device sends data packets along networks. It would check the address of the target destination and dispatch the data packet to another subnet or the target computer. Machines in a local network are configured to know the router’s IP address (usually, or

This is a LAN technology, a link layer protocol in the TCP/IP stack, laying out how networked devices can format data for transmission to other machines on the same network segment. It would also how to put the data out on the network connection.

The term is used for certain types of wireless local area networks which use specs in the 802.11 family. Stuff that gets approved in the Wi-Fi Alliance tests for interoperability, security and application-specific protocols are christened ‘Wi-Fi Certified’.

LAN (Local Area Network)
LAN is a set of devices sharing a common communications line or wireless link to a server. It would include computers and peripherals linked to a server within a distinct geographic area such commercial establishment, or office premises.

WAN (Wide Area Network)
WAN denotes a wider telecommunication structure from a LAN. Though it may be privately owned or rented, WAN includes public networks.

MAN (Metropolitan Area Network)
The network links users with computer resources in an area larger than that covered by a local area network (LAN) but smaller than the region covered by a wide area network (WAN).

Bandwidth Reservation
The process involves assigning priority to different flows of traffic based on their criticality and delay-sensitivity. Focus is on making the best use of available bandwidth. In case the network becomes packed, lower-priority traffic may be dropped.