Open port 10000 on EMC VNX 5500

port 10000 (NDMP) is open on datamover by default, so you should be able to telnet to any interface on the datamover on port 10000 and get this gibberish prompt. Are you sure there are no firewalls between your system and an interface on datamover (don't test against control station).

Yes there are no firewall, as both are internal, storage and the system from where I am doing telnet. So what can be the issue?

run this from control station

server_netstat server_2 -a | grep -i ndmp

it's listening, socket is open so port is open.

This command shows tcp *.ndmp listen

But how can I check which ports are open? any command for that?

have a read of Configuring NDMP Backups on Celerra, its an EMC Doc, P/N 300-009-984 you will find it either with powerlink ( or support as its renamed) or a google.

he/she tried to telnet to the CIFS server

I think there is some confusion here as to where you need to backup

The CIFS Server will normally reside on a virtual Data Mover, which in turn will reside on a physical data mover, which will be from server_2 to server_4 depending on your hardware and redundancy config. You need to have NDMP backup pointing at the physical Data Mover the VDM resides on,

Once you have verified the NDMP port is enabled ( by nmap or telnet to the port ), ensure an NDMP account exists and your backup software uses the password when attempting to start an NDMP session.

I have CIFS server on physical datamover server_2.

But how can we point NDMP backup to datamover, as it is not resolvable, no DNS entry.

Also what do you mean by "NDMP account" exists, which account and password?

Thanks

regarding the procedure you are following, its wrong.

Telnet is disabled by default on most modern unix/linux distros to force you to use ssh as telnet carried communications across the network in cleartext which is a simple opportunity for malicious listening to gather things like passwords.

NDMP does not communicate with the Control Station, its configuration and debugging is managed by the control station however NDMP communicates between the Data Movers where the data is accessed and the end point where the data flows to ( we will ignore 3-way NDMP here as it will muddy the waters ).

this is what you should get when you try to telnet to port 10000 to an interface on your datamover. If you can't do this from your backup application server, it will not be able to do anything else.

telnet 10.2.14.181 10000

Connected to vnx5700.mycompany.com (10.2.14.181).

Escape character is '^]'.

�$U(�

ok, before you said you were not getting that far ?

as far as NDMP configuration is concerned, you need to create an NDMP account on server_2, that account will be used for NDMP configuration in Networker or whatever application you are trying to use.

/nas/sbin/server_user -add -md5 -password

Yes I am getting this kind of gibbrish reply on telnet.

But on configuring the NDMP client on Network side with NASADMIN or SYSADMIN credentials gives the error that it cannot communicate with target, i.e. CIFS server.