Is snmpv3 supported on 3500XL switches? I don't see the snmp-server user command. We have Version 12.0(5)WC15.
Sorry, my fault. I had confused the 2950 series which can run 12.1, and do have the limited support for v3 I mentioned. I had thought they did a 12.1 for those XLs to be inline with the 2950, but they have not.
The XL series does not support SNMPv3 in the 12.0 train. I double-checked, and there will not be a 12.1 for these switches, and thus v3 will not be supported.