Black Box LRA005A-R2 - Manual (Page 152)

ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER REFERENCE MANUAL
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• dialup modemX dial_log—Use to view the types of packets that caused the last 5 dials.
• history—Use history to check and verify all commands entered since you logged on.
• ifconfig iface—Use ifconfig to view the status of the interfaces.
• performance—Displays performance statistics, dynamically updated every ten seconds.
• ping IP_address—For TCP/IP sites only. When trying to determine if an IP routing problem exists, use
ping first. Use ping to verify that you can connect out (of your network). For example, try “ping
rns.com.” Ping sends an ICMP echo-request packet to a remote host. A successful ping means that
the packet was able to get to the remote host, and the remote host knew how to send the packet back
to the Router.
• ppp iface—Use ppp to display and configure Point-To-Point Protocol (PPP) statistics. The Router uses
PPP to establish communication with remote devices. When used without optional parameters, ppp
iface displays information about the current state of authentication, and the status of the PPP
connection. Also use ppp to provide local and remote IP addresses, and to show if the line is
connected or not.
• tip iface—For TCP/IP sites only. Use tip to enter modem commands directly, i.e., to send modem
commands directly to the modem interfaces. Use tip when trying to determine if a particular modem
is functioning properly and responding to Router commands. Tip is similar to a “Terminal Mode”
session on a communications program, and can only can be used on an inactive modem interface. To
make an interface inactive, type “dialup modemX inactive,” where modemX is the interface desired.
After your tip session, bring the modem interface back up by issuing either a “dialup modemX
demand” or “dialup modemX demand_backoff” if the line is configured for LAN-to-LAN, or “dialup
modemX client” if the line is configured for User-to-LAN.
• trace iface—Use trace to view packet traffic across the Router, as it happens. Trace also displays the
headers of all packets seen on that interface, which is useful when determining which types of
packets are moving across a specific interface. Packets are shown with their origin and destination
addresses.
• traceroute IP_address—For TCP/IP sites only. Use traceroute to show you the route taken to reach an
IP address. Try “traceroute rns.com.” Traceroute displays each individual device that the Router is
sending packets through, to get to the remote ip_address. Use traceroute to determine if packets are
being routed correctly by the Router and the other routers on your network.
• update [iface] now—Use update to dial the modem or ISDN line and connect to the remote system
on a particular dialup interface. Use update to test the Router’s dialer script. Using update now with
no interface specified will dial all modem and ISDN lines.
1.7.3 CONFIG.NET E XAMPLE
At boot time, the Router executes the CONFIG.NET file on the Router boot diskette (much like a DOS
batch file). Each line in the CONFIG.NET file is a command that you can execute manually from the
system console (or telnet session, or terminal emulator).
The following CONFIG.NET file represents a simple Router configuration. If you decide to use parts
of it, make sure you use your own IP addresses and IPX network numbers.
CONFIG.NET file (supporting TCP/IP and IPX routing)
hostname Router
ip address 0.0.0.0
ifconfig console mtu 1500
ifconfig eth0 netmask 255.255.255.0 broadcast 0.0.0.255 mtu 1500