I'm unable to configure "vtp mode transparent" on a Cisco 3548-XL switch. It's using IOS c3500XL-c3h2s-mz.120-5.WC3b.bin. The only options under vtp is "file".
switch(config)# vtp ?
Please let me know if I have to upgrade the IOS or removing the vlan.dat file. This switch was not properly reset to manufacturer's default. I was given time to reset.
It won't. 2900XL/3500XL does not support extended VLAN.
Extended VLANs support starts with the 2940/2950/2955 using version 12.1(22)EA5 and later.