填空题

某公司使用Windows 2003 DHCP服务器对内部主机的IP地址进行管理，DHCP服务器的新建作用域及新建保留配置如图(A)和图(B)所示。

某DHCP客户机从该DHCP服务器获取IP地址过程中，在客户机捕获的4条报文及对第4条报文的分析如下所示。请补充其中的信息。

 

编号	源IP地址	目的IP地址	报文摘要	报文捕获时间
1	0.0.0.0	（1）	DHCP:Request,Type:DHCP discover	2013-06-02 9:07:00
2	59.64.188.201	255.255.255.255	DHCP:Reply,Type:DHCP offer	2013-06-02 9:07:00
3	0.0.0.0	255.255.255.255	DHCP:Request,Type:DHCP （2）	2013-06-02 9:07:00
4	（3）	255.255.255.255	DHCP:Reply,Type:DHCP ack	2013-06-02 9:07:00

 

DHCP:-----DHCP Header-----
DHCP:Boot record type =2(Reply)
DHCP:Hardware address type =1(10M Ethernet)
DHCP:Hardware address length =6bytes
DHCP:Hops =0
DHCP:Transaction id =2219231D
DHCP:Elapsed boot time =0seconds
DHCP:Flags =0000
DHCP:0 =no broadcast
DHCP:Client self-assigned address =[0.0.0.0]
DHCP:Client address =（4）
DHCP:Next Server to use in bootstrap =[0.0.0.0]
DHCP:Relay Agent =[0.0.0.0]
DHCP:Client hardware address =001122334455
DHCP:Message Type =5(DHCP Ack)
DHCP:Address renewel interval =345600(seconds)
DHCP:Address rebinding interval =604800(seconds)
DHCP:Request IP Address lease time =691200(seconds)
DHCP:Subnet mask =（5）

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