OSPF认证

OSPF协议数据包方法是：在OSPF数据外先封装一层OSPF报头，然后在OSPF报头外封装IP报头，并在IP报头的协议号字段中标明为89。OSPF报头中的AuType字段可以有三种选择：为0将不查看这个认证字段；为1即是通常认证，这个字段将包含一个最长为64位的口令；为2即是MD5认证，这个认证字段将包含KeyID，认证数

(The OSPF protocol data packet method is: first encapsulate a layer of OSPF header outside the OSPF data, and then encapsulate an IP header outside the OSPF header, and indicate 89 in the protocol number field of the IP header. The AuType field in the OSPF header can have three choices: 0 will not check this authentication field; 1 is normal authentication, this field will contain a password with a maximum length of 64 bits; 2 is MD5 authentication, this authentication field Will contain KeyID, authentication number)

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