Payload S RP packet structure Time to Live 11 bit field representing the hop-count. It is decremented every time a node forwards a packet. If the TTL reaches zero it is stripped off the ring, thus allowing for a total node space of 2048 nodes on a ring. When a packet is first sent onto the ring the TTL should be set to at least twice the total number of nodes on the ring. This bit is almost always set to 1.
Higher values indicate higher priority.
Protocol Type 2-octet field similar to EtherType field.