INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Error 48: Server unable to resolve client name!!

Error 48: Server unable to resolve client name!!

(OP)
Hi all,

INFO:
We have netbackup MP4.5 on solaris 8!
And have about 20 clients (Win XP SP2)which get their IP addresses from a windows server.
And i need to configure those clients for netbackup.

DONE:
Installed netbackup client s/w on 2 of our test machines and given them unique netbackup client names ( differnt from their computer name and their temporary host name).
Also gave them a valid Announce_DHCP_Interval value 4320 so that it should tell the server about its new IP address after every 4320 secs if it has changed since its last announcement.

Configured our server for these clients (by giving bpclient command and so adding netbackup client names to client database of the server). Also wrote all our dynamic addresses and their corresponding host names to /etc/hosts file.

PROBLEM:
During a backup, server is giving error code 48 which is :client name couldnot be resolved).

Another thing which i noticed was that when i give the following command to see what's in the client database of the server..
/usr/openv/netbackup/bin/admincmd/bpclient -L -All

I get entries like the following..
client name : client01 (which i gave on both client and server)
Current host:
Hostname: *NULL*
IP address: 0.0.0.0
Connect on non reserved port: No
No call back connections: No
Dynamic address: Yes
Free Browse: Allow
List restore: Now specified
Max jobs this client: Not specified

Ideally,netbackup client should notify the server of its  netbackup client name and network hostname and so the current host,hostname and IP address fields should display these values for the client..

But even after waiting for more than 4320 * 4 secs..Nothing has happened and server is giving error 48 and client database still shows the above default values..(IP address 0.0.0.0 and ......)

Any help is really appreciated..
Im sorry if i gave too many unnecessary details!!
Thanks in advance
-Jyoti

RE: Error 48: Server unable to resolve client name!!

Put the client hostname in the servers /etc/hosts file and also look at /usr/openv/netbackup/bp.conf.

>---------------------------------------Lawrence Feldman
SR. QA. Engineer SNAP Appliance
lfeldman@snapappliance.com
                  

RE: Error 48: Server unable to resolve client name!!

(OP)

I can't add client hostname to /etc/hosts as our client hostnames (IP addresses) are dynamic. Doing that would mean running a script before every backup.

Thanks for the help!

RE: Error 48: Server unable to resolve client name!!

Could it be a DNS problem? What does nslookup (gethostbyname and gethostbyaddr respecitvely) say if your using that name service?

HTH,

mrjazz

RE: Error 48: Server unable to resolve client name!!

(OP)

Ya,its actually gethostname which is failing.
Probably im not able to make myself clear.

This is the problem only. Although /etc/hosts file has all the possible IP addresses with their network hostname the too the server is not able to resolve the net backup client name.
Basically the client should go to server after every t secs( which i have specified in the client registery) and should thell the server about its current IP address and name. Apparently,somehow this is not happening because client database in the server is still giving null for the host name and 0.0.0.0 for the IP address.
Iam lookinf for a way by which I can force the client to contact the server and tell its details.
I checked my server for any firewall problem but that's not even the case.Server didn't block the client message.

Thanks everyone,
Your help and time is really appreciated.
-Jyoti

RE: Error 48: Server unable to resolve client name!!

Make sure you can do a reverse lookup of the host in DNS.

RE: Error 48: Server unable to resolve client name!!

Try and reinstall the netbackup client on the client machine. Make sure you can ping back and forth by IP and hostname as well.

Is the client on a different subnet or DMZ?

RE: Error 48: Server unable to resolve client name!!

(OP)
I can ping from the server by IP address and not by host name which is because client is never going to the server and telling about its netbackup client name so that the server could make an entry in its client database.
Ofcourse,I can ping server from the client both by host name as well as IP address.

Ya,few of of our clients are on different subnet.

Thanks a ton for help!!

RE: Error 48: Server unable to resolve client name!!

just to clarify, you have added the clinet into a policy already correct?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close