Multitech RF500S Uživatelský manuál stáhnout pdf (Strana 34)

8.4 WINIPCFG

In versions of Windows versions WINIPCFG displays the current configuration for each network adapter.

In Windows 2000 use the IPCONFIG command in a DOS box. WINIPCFG lets you look at each network

adapter in the computer. The first is the virtual adapter for dialup, and then each network adapter is shown.

The first thing to check is that the computer has the correct IP address. In addition to address and subnet

two other important fields are Adapter address and Default Gateway. The adapter address is the hardware

address assigned to the physical network interface. For Ethernet this is a 48-bit Media Access Controller

(MAC) address. The Default Gateway tells IP software where to send packets that are not on the local

LAN.

8.5 Trace Route

Trace Route uses Internet Control Message Protocol (ICMP) to find each hop between the user and the

remote host, and the delay to each hop. This is very useful to determine the underlying cause of slow or

unavailable hosts. Trace Route uses the Time To Live (TTL) field to cause the ICMP packet to be rejected

because it has gone through too many hops. When this occurs the host informs the sender that the packet

has expired. Trace Route uses this information to build a path map and response time list to each hop

between the source and destination. Note in some cases hosts do not respond to being pinged, Trace Route

still works but it will timeout to those hosts.

The Windows version of Trace Route is TRACERT a command line utility. VisualRoute provides the same

information as TRACERT in a graphical format. In addition it performs a WHOIS lookup to determine

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Multitech RF500S Uživatelský manuál Strana 34