More details are needed to determine the exact cause of the failure. For one, what switch is this, and what code is it running? Additionally, the ChangeAudit.log and JRun logs under NMSROOT\objects\jrun\jsm-cw2000\logs will be needed. Additional debugging may also need to be enabled.
Typical causes of vlan.dat fetch failures include a nonexistent vlan.dat (perhaps the switch is using a running-config based VLAN configuration), no telnet or SSH access to the switch (vlan.dat must be fetched using telnet or SSH and TFTP), or an issue with NAT between the device and the CiscoWorks server.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...