泰克-OSPF
OSPF 一、邻接建立的七中状态及用途 1、Init 2、Twoway P2P MA 用途是什么 DR wait P2P MA 3 Exstart a. ? B.DBD C. 4 Exchange A. DBD 5 Loading A. LSR 6 Full a. LSR B. DBD C. LSDB 7 A.DNA DC B. virtual-link OSPF 1 Hello OSPF DR BDR 2 DD DD LSDB LSDB LSA Header LSA Header LSA LSA LSA Header LSA LSA Header LSA DD Master Slave Master DD 1 Slave Master 3 LSR DD LSR LSA LSA 4 LSU LSU LSA LSA LSA Flooding LSAck LSA LSA 5 LSAck LSAck LSU LSA Header LSAck LSA 三、数据报文格式 Hello hello packet 1 DBD 2 LSR 3 LSU 4 LSACK 5 Hello Packet LSA ID Router-LSA LSR LSA Network Mask 32 Hello HelloInterval 16 Hello Options 8 可选项： E Flood AS