Netbackup with DHCP (Wired and Wi-Fi)
We have DHCP for Wired and and RADIUS (Wi-Fi). For both lease is same (7 days). DNS is set for autoscavenging at 7 days. No-Refresh and Refresh intervals are set to 7 days. Nightmare comes when NBU queries with DNS and it finds end system (laptop) IP different. Ports are enabled throughout DHCP Scope pools to NBU master/media server
NBU Master/Media ; 7.5 Windows 2008 R2 ENT sp1
MSDP enabled
most of time backup failes with status 58/59. 59 used to if client is not able to resolve master/media server name. but we checked in registry also they are correct. for 58, if we check in DNS and update new ip what client is carrying NBU works. Is there any way i can bind NBU connections over NetBIOS name only . Irrrespective of IP client has. as i can't update host entry for all clients whose ip frequently gets changed.
Bear in mind that NetBackup actually has its own built in DNS cache and this may be causing your issue.
It may be better (worth trying) to setup scheduled tasks on the Master and Media Servers that run bat files each day to update then just prior to the backups starting:
ipconfig /flushdns
followed by:
bpclntcmd -clear_host_cache
Hope this helps