bpclntcmd

HI ALL,

I have 3 NIC on my client.

one for prod ,one for backup and one for storage.

when I run ipconfig/all,i have below nic and ip

lon100 10.1.200.36

lon100-bck 10.1.200.37

lon100-stu 10.1.200.40

Now when I run bpclntcmd -pn from client,Which nic's IP will go to master server for query?

http://www.symantec.com/business/support/index?page=content&id=TECH50198

nbu 7.1

solaris

bpclntcmd -pn
When the -pn option is run on a NetBackup host, it initiates an inquiry to the NetBackup master server, and the master server returns information about the requesting client to the requesting host. The information returned is, in effect, how the master server "identifies" the requesting host. The client contacts the first server listed in its servers list, found in the bp.conf file on UNIX/Linux clients (the SERVER= lines) and in the Backup, Archive, and Restore GUI, under File - Specify NetBackup Machines and Policy Type on a Windows client.

Bpclntcmd identifies the server replying to the request (the "expecting response from" line), and then it displays the information returned from that server. The following is an example of the output of the bpclntcmd -pn command:

> bpclntcmd -pn
expecting response from server master_server_01
client_01.domain.com client_01 192.168.0.30 3815

In the above example:

- The master server is "master_server_01"
- The connection name (peername) is "client_01.domain.com"
- The configured client name is "client_01"
- The source IP from which the connection originated is 192.168.0.30
- The source port used to connect is 3815.

The master server resolved 192.168.0.30 to "client_01.domain.com". The FQDN was not configured as a client in any policy, but the shortname "client_01" was present.

If the output showed *NULL* for the configured client name (as shown below), the client is not configured in a policy and does not show up in the image database.

> bpclntcmd -pn
expecting response from server master_server_01
client_01.domain.com *NULL* 192.168.0.30 3815

Review the policy configuration on the master server, and see if the peername is listed correctly in a policy.

Marianne
11 years ago
NBU on master server contains Client name in policy. The IP address that master and media server knows about will be used to connect to client.

Client will connect back on the interface/IP that is used for this hostname.
In this case - it will probably round-robin.

If there is a database on the client which means that the client will initiate comms to the master server, the 'Configured Client Name' will be used as source.
If this is the -bck name with 2 IP addresses, TCP/IP will choose any IP. This is outside of NBU control.

You may want to read up in Admin Guide II chapter 4 about this topic:
Host name rules

18 Replies

Nicolai
Moderator
11 years ago
Usally it will take the NIC where the default gaetway is configured.

But the qustion can't be answered fully without knowing the subnetmask and IP addresses of the master and client.

Nornally having to IP on the same subnet causes more problems than it solves - consider to disable one of them:

lon100-bck 10.1.200.37

lon100-stu 10.1.200.40

Here are some links about host routing, this will help you understand how traffice travels:

http://www.youtube.com/watch?v=pjX1msE1ccI

http://technet.microsoft.com/en-us/library/cc957855.aspx
NIKHIL234656595
Level 6
11 years ago
so which out of these 3 ip will be used ?
Will_Restore
Level 6
11 years ago
If you ping the client from the Master which IP responds? It depends on how your environment is set up & we have no visibility into that.
CRZ
Level 6
11 years ago
Which hostname does the client think is the master server and what IP address does the client think that hostname is at?

Hey, wait... I bet if you actually ran the command on your client you'd get the answer yourself a whole lot faster than hoping we'll be able to use our mind reading powers to guess what your configuration is!

(As always with your threads, I'd love to know if these servers actually exist in the real world or if you're just making up some scenario in the hopes of scoring points during an interview.)
Will_Restore
Level 6
11 years ago
NetBackup is like learning to ride a bicycle. One has to jump on and fall over flat a few times before obtaining the perfect balance.
revarooo
Level 6
11 years ago
Chris - like :)

NIKHIL - go an run the command.
NIKHIL234656595
Level 6
11 years ago
C:\Program Files\VERITAS\NetBackup\bin>bpclntcmd -pn
expecting response from server master 1
win12 win12-bck 10.13.197.66 4881

Why this ip??? on client we have 2 ip

C:\Program Files\VERITAS\NetBackup\bin>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : win12
   Primary Dns Suffix . . . . . . . : corp.org.com
   Node Type . . . . . . . . . . . . : Unknown
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection 7:win12-bck

   Connection-specific DNS Suffix . : corp.org.com
   Description . . . . . . . . . . . : TEAM : Production Load Balancer Network
   Physical Address. . . . . . . . . :
   DHCP Enabled. . . . . . . . . . . : No
   IP Address. . . . . . . . . . . . : 10.13.197.83
   Subnet Mask . . . . . . . . . . . : 255.255.255.192
   IP Address. . . . . . . . . . . . : 10.13.197.66
   Subnet Mask . . . . . . . . . . . : 255.255.255.192
   Default Gateway . . . . . . . . . : 10.13.197.65
Marianne
Level 6
11 years ago
Did you bind the different IP addresses to hostnames in Client's hosts file?

What does 'bpclntcmd -self' show?

What is the purpose of having multiple IP addresses on the same subnet?
NIKHIL234656595
Level 6
11 years ago
different IP addresses to hostnames in Client's hosts file? yes.

multiple IP addresses on the same subnet? for os team.

this is my query.

I have 3 NIC on my client.

one for prod ,one for backup and one for storage.

when I run ipconfig/all,i have below nic and ip

lon100 10.1.200.36

lon100-bck 10.1.200.37

lon100-stu 10.1.200.40

Now when I run bpclntcmd -pn from client,Which nic's IP will go to master server for query?
Marianne
Level 6
11 years ago
If you answer my questions, I will be able to answer yours.

Again:

Did you bind the different IP addresses to hostnames in Client's hosts file?
(This is how OS and TCP/IP knows which IP address to use for lon100-bck hostname)

What does 'bpclntcmd -self' show?
This will tell us what is NBU 'configured hostname'.

What is the purpose of having multiple IP addresses on the same subnet?
(Basics of TCP/IP....)