Allied Telesis AR400 SERIES Software Release 2.7.1 - Manual (Page 130)

130 AR400 Series Router User Guide
Software Release 2.7.1
C613-02021-00 REV F
To set PING defaults, enter the command:
SET PING [{[IPADDRESS=]ipadd|[IPXADDRESS=]network:station|
[APPLEADDRESS=]network.node}] [LENGTH=number]
[NUMBER={number|CONTINUOUS}] [PATTERN=hexnum]
[{SIPADDRESS=ipadd|SIPXADDRESS=network:station|SAPPLEADDR
ESS=network.node}] [SCREENOUTPUT={YES|NO}]
[TIMEOUT=number] [TOS=number]
To display the default PING settings and summary information, enter the
command:
SHOW PING
The stop a PING that is in progress, enter the command:
STOP PING
If you can PING the end destination, then the physical and layer 2 links are
functioning, and any difficulties are in the network or higher layers.
If PING to the end destination fails, PING intermediate network addresses. If
you can successfully PING some network addresses, and not others, you can
deduce which link in the network is down.
Note that if Network Address Translation (NAT) is configured on the remote router,
PINGing devices connected to it may give misleading information.
For more information about using PING, see the Internet Protocol (IP) chapter in
the Software Reference.
Troubleshooting IP Configurations
No Route Exists to the Remote Router
1. Wait for RIP update
Wait for at least one minute to ensure that a RIP update has been received
(See “Routing Information Protocol (RIP)” on page 119).
2. Try using Telnet to access the remote router.
To Telnet from the local router to the remote router, and from the remote
router to the local router, enter the command:
TELNET {ipadd|ipv6add|host}
3. Check PPP link
To check that the PPP link is OPENED for both LCP and IP, enter the
command:
SHOW PPP
The display should look like that shown in Figure 24 on page 131. For more
information on how to check the PPP link see “Point-to-Point Protocol (PPP)”
on page 5-1 in the Point-to-Point Protocol (PPP) chapter in the Software
Reference.