IS-IS creates and maintains adjacencies and neighbor relations by using the Hello protocol.
For the following options, which are Hello packets used in IS-IS?
A.
A generic Hello
B.
Point-to-point Level 1, point-to-point Level 2, LAN Level 1, LAN Level 2
C.
Point-to-point Level 1, point-to-point Level 2, LAN
D.
Point-to-point, LAN Level 1, LAN Level 2