Black Box LRA005A-R2 - Manual (Page 57)

ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER USER’S MANUAL
6.2.1 P ING FROM THE L OCAL E THERNET
Refer to Figure 6- l.
1. From the local Router, ping a workstation on the local Ethernet.
Enter ping IP_address (of local workstation) and wait for the result. This test passes if you
see a round-trip time displayed in milliseconds. This test fails if you see a response similar
to “Target does not respond.”
If this test fails, then
• Make sure that the local workstation and local Router are physically attached to the same Ethernet,
by checking the cables.
• Verify that the local host and local Router are configured with the same network number and subnet
mask. Display the IP address and subnet mask for the Ethernet interface eth0 on the Router using
the if config command. Consult the system administration manual for the local host to determine
how to display the IP address and subnet mask for its Ethernet interface.
2. From the local Router, ping the remote Router.
• Establish a dialup connection from your Router to the remote Router. Use the -s option to
continuously transmit the ping.
On the local Router, enter:
ping -s IP_address_of_remote_Router
You should hear the modem dial, the remote system answer, and a series of tones. A Sync Router
will not emit any sounds. When the speaker turns off the connection is made. This process can take
up to 30 seconds (or much shorter, when using the sync0 interface). During this time the displayed
response from the ping command is:
Target did not respond
Once the speaker turns off, the test is successful if a round-trip time to the remote system is
displayed, similar to:
Round trip time: 180
3. From a workstation on the local Ethernet, ping the remote Router. You should only do this test if
you want the ability to configure the remote Router from this workstation on the local Ethernet.
Enter syslog on. Next enter ping -s [IP_address] (of remote Router) and wait for the result. This test
passes if you see a round-trip time displayed in milliseconds. This test fails if you see a response
similar to “Target does not respond.”
If this test fails, then:
• Determine if a WAN connection has been established between two Routers. Use the dialup interface
status command for dialup connections (look for called out or serving call), or use the ppp sync0
command for leased lines (look for IPCP opened).
• If the WAN link does not come up, try using trace [interface] to see what kind of traffic is traveling
the link.
4. From a workstation on the local Ethernet, ping a workstation on the remote Ethernet.
Wait up to 60 seconds for the result.
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