file to see if
nis
is specified as a service for the
hosts
database
entry. If it is not, add it. Also, verify that the DNS service has
information about the remote host.
4.
If your site uses the NIS name service for name-to-address
translation, look in the
/etc/nsswitch.conf
file to see if
nis
is specified as a service for the
hosts
database entry. If it is not,
add it. Also, verify if the NIS service has information about the
remote host.
5.
If your
/etc/nsswitch.conf
file lists
files
as the only
name-to-address translation mechanism, the
/etc/hosts
file
does not have information on the remote host. See nsswitch.conf(4)
for more information.
Host reachable?
NO
YES
If a remote host is not reachable, the following message is displayed:
host is unreachable
Complete the following steps:
1.
Inspect the cabling between the local host and the link partner.
Perform a loopback test on your own system by using the
ping
command. If this is successful, your system is operating properly
to the Network Layer (OSI Layer 3).
2.
3.
Verify the remote host is running, using the
ping
command. If
the remote host does not respond, ask the host's system
administrator to start the host. For additional information about
the
ping
command, see
“Testing access to Internet network hosts”
(page 80)
.
4.
Verify that an entry exists for the remote host in your system's
ARP cache by entering the following command:
# arp hostname
If the entry is wrong or incomplete, enter the correct station
address by using the
arp
command. See arp(1M) for more
information.
5.
Make sure the network devices are configured properly on the
local host, using the
netstat -i
command.
6.
Verify that the routing tables on the local host are correct, using
the
netstat -r
command. Use the
ping
command to determine
whether the IP router is reachable.
7.
Verify that the local host's address-to-name translation for the
remote host is correct by using the
nslookup
command.
8.
Inspect the routers along the path to the remote host to determine
whether they have security features enabled that prevent you from
reaching the remote host.
File access
successful?
NO
YES
If a file cannot be accessed using the
rcp
or
rsh
command, the
following message is displayed:
permission denied
Complete the following steps:
1.
Verify that the user is intended to have access to the remote host.
The remote host might be intentionally preventing remote access.
2.
Verify that the correct host and user definitions exist in the user's
.rhosts
file on the remote host.
68
Troubleshooting HP APA
