Cannot connect to Media Agent on system - IPC

I changed the network IP of my Data protector (192.168.130.47 for
192.168.132.4), and now, I can´t complete the backup of one client.

[Critical] From: BDA-NET@qbpw006 "E:" Time: 13/12/2012 12:24:37
Cannot connect to Media Agent on system qbpw004, port
6236 (IPC Cannot Connect
System error: [10060] Connection timed out
) => aborting.

[Critical] From: VBDA@qbpw006 "E:" Time: 13/12/2012 12:24:37
Unexpected close reading NET message => aborting.

I can remove and install an agent on this client, but when I started a
backup session, I have this error.

Windows server 2003 - dataprotector and window server 2008 - client.
The client still on the network 192.168.130.X

In server QBPW006 (client) I can ping the server qbpw004 normally, and connect by telnet in port 5555.
The first problem after changed the ip addres was in cell manager license, I solved entering on licensing page (hp) and changed the ip address for licensing certificate.
Firewall is disabled in boths of servers.
Thanks