GDZL-Rsp

GDZL-Req

GNZ-Rsp

GNZ-Req

ZI-Rsp

ZI-Req

          Zone Change SUI flag

          NDC SUI flag

          ND and NRC SUI flag

          Net Added SUI flag

          SZI Flag

          Hop Count Reduction

          Remapping Active

          Last Flag

Zone Change

Network Dist. Change

Network Route Change

Network Deleted

Network Added

Null

Tickle-ACK

Tickle

13

12

11

10

Open-Response

Open-Request

Zone-Response

Zone-Request

RD-Packet

RI-Update

RI-ACK

RI-Response

RI-Request