1. Method 1: Clear the cached host name and IP address on the HDP3500E master server.
a. Log in to the HDP3500E master server as the root user.
b. Run the following command to clear the cached host name and IP address on the HDP3500E master server.
# /usr/openv/netbackup/bin/bpclntcmd -clear_host_cache
2. Method 2: Delete all files in the host_cache directory.
The resident program on the back end uses the DNS in the host file to rebuild the host cache.
When the HDP3500E master server attempts to establish a connection, the NetBackup saves the mapping between host names and IP addresses in the local cache to accelerate the searching of the server names and IP addresses. After the IP address of the client is changed, the NetBackup cannot identify the mapping between the host name and the new IP address. The NetBackup still uses the mapping between the host name and the original IP address.