[ns] Hello packet

Dear friends, I am working on link state protocol, and I am reading the code but I didn't find the Hello packets function? Can anyone tell me in which version can I find the Hello packet or if someone know about it can you please help me Regards Rawan

[ns] Help please

Hi, I have got this problem [code omitted becuase of length] inavaild command namw "WFQClass" while excuting "WFQClass set limit_ 5000" someone can help me please hoe to fix this errore I will be very pleased? Regards Rawan