User manual

120 20131-301 Gemini G3 - User Manual

5.4 Troubleshooting Tools

5.4.1 Network Connectivity

• PING (DOS/WINDOWS)

The ping command determines whether a specific IP address is accessible. It works by send-

ing a packet to the specified address and waiting for a reply. It is useful for troubleshooting

“end-to-end” reachability, network connectivity, and network latency.

Available for MS-Windows 9x, ME, NT, 2000, and XP as well as Unix & Free BSD.

EXAMPLE:

ping 192.168.204.1 displays the response with turn around time in milliseconds.

• TRACERT (WINDOWS)

The tracert command is used to visually see a network packet being sent and received and

the number of hops required for that packet to get to its destination.

Available for MS-DOS 6.2, MS-Windows 9x, ME, NT, 2000, and XP.

Note:

Users with MS-Windows 2000 or XP who need additional information on network la-

tency and network loss may also use the pathping command.

EXAMPLE

tracert www.yahoo.com at the command prompt displays the intermediate routers be-

tween local host to the www.yahoo.com site.

5.4.2 Configuration Information

• WINIPCFG (WIN95/98), IPCONFIG (WIN2K) or IFCONFIG (UNIX)

Ipconfig is a DOS utility, which can be used from MS-DOS or a MS-DOS shell to display

the network settings currently assigned and given by a network. This command can be util-

ized to verify a network connection as well as to verify network settings.

Available for MS-DOS, MS-Windows 9x, ME, NT, 2000, and XP.

EXAMPLE

ipconfig /all at the command prompt displays the Ethernet MAC address, IP address,

IP netmask, default IP gateway, DNS server… information.

• ARP

View and update the system ARP table

The Address Resolution Protocol (ARP) is used with the IP protocol for mapping a 32-bit

Internet Protocol address to a MAC address that is recognized in the local network specified

in RFC 826. Once recognized the server or networking device returns a response containing

the required address.

Available for MS-Windows 9x, ME, NT, 2000, and XP.

EXAMPLE

arp -a displays all entries in the ARP cache. Useful in manipulating ARP caches.

• ROUTE

View and update the system routing table