I think the "vsi_search_string be an array" problem could be solved as following steps: 1. An item such as (vsi_support_key_string="{supported forwarding mode: (0x40) reflective relay, supported capabilities: (0x7) RTE ECP VDP}";) is configured well in the .conf file. 2. The application read this value from .conf file as a long string. 3. The application executes supporting function about VSI and check whether the output returned is a substring of vsi_support_key_string. If the output contains in the vsi_support_key_string, supporting of VSI is proved. Sincerely yours, Xu Wang I don't have 'lldptool' installed on my system, so I cannot verify the output or the fix. does) change between versions. >What you have is just "two" versions of differences. What if there's a 3rd version that had/has >something different? Is the output different on different archs/OS's? configuration file? Rather than two >constant strings. to do this. I also think the >comments in the .conf file could be beefed up so someone would know what to look for. Is that a >specific field in the output or is that string what is returned. Essentially how would someone know >what to look for in order to add a new/different string. ......