Backup Failing with Error 23

[saransoftware]

bash-3.00# bptestbpcd -client Client_A -debug
20:04:45.828 [13600] <2> bptestbpcd: VERBOSE = 2
20:04:52.937 [13600] <2> setup_connect_options: gethostbyname failed for Client_A: NO_ADDRESS (4)
20:04:52.938 [13600] <2> setup_connect_options: cannot find host: Client_A, h_errno=4
20:04:52.938 [13600] <2> nb_connect_to_vnetd_or_legacy: ../../../nb/lib/comm.c.2017: setup_connect_options failed: 48 148
20:04:52.938 [13600] <2> local_bpcr_connect: nb_connect_to_vnetd_service(Client_A) failed: 48
20:04:52.938 [13600] <2> local_bpcr_connect: Can't connect to client Client_A
20:04:52.938 [13600] <2> ConnectToBPCD: bpcd_connect_and_verify(Client_A, Client_A) failed: 48
<16>bptestbpcd main: Function ConnectToBPCD(Client_A) failed: 48
20:04:52.940 [13600] <16> bptestbpcd main: Function ConnectToBPCD(Client_A) failed: 48
<2>bptestbpcd: client hostname could not be found
20:04:52.941 [13600] <2> bptestbpcd: client hostname could not be found
<2>bptestbpcd: EXIT status = 48
20:04:52.942 [13600] <2> bptestbpcd: EXIT status = 48
client hostname could not be found

Can Any one help me..?
saransoftware@gmail.com

[varunprakash]

Check that name resolution is valid (hostnames are case-sensitive depending on the OS used). Try to "ping" the client from the server where this error occurs. Use the hostname for the client, as specified in the NetBackup Policy for the failing backup.

Add host name/IP entries for the Master Server, Media Server and Client in their respective /etc/hosts files

Windows:  %SystemRoot%\system32\drivers\etc\hosts

Change the /etc/nsswitch.conf file on all servers and the client to resolve hostnames by "files" first.nsswitch.conf is a UNIX-based specific file that configures name-service. (Unix only)

[CRZ]

Underscores aren't kosher with DNS, if I recall correctly.  You can probably still get away with it if you put it directly in the hosts file, but if the hostname is really "Client_A" you might want to give it an alias that doesn't have an underscore in it and try that instead.

(If that's just a name change to obscure your hostname, then I haven't helped you at all.  Sorry!  :) )