Cable Modem的各個狀態表示

Cablle Modem 连接状态
􀃔 init(o)          Option 文件开始传输.
􀃔 init(t)            Time-of-day (TOD) 开始交换.
􀃔 init(r1)        CM 传输测距参数.
􀃔 init(r2)        CM 在测距过程中.
􀃔 init(rc)          测距结束.
􀃔 dhcp(d)      CM发出DHCP Discover 信息.
􀃔 dhcp(o)        收到DHCP Offer.
􀃔 dhcp(req)    CM 发出DHCP 请求.
􀃔 dhcp(ack)    收到DHCP 确认, IP 地址由DHCP服务器分配.
􀃔 online          CM 已注册; 可以用于数据传输.
􀃔 online(d)    CM 已注册; 但CM 的网络接入被disable.
􀃔 online(un)  CM 已注册; 但不能用于数据传输. BPI模块验证CM 身份失败.
􀃔 online(pk)    CM 已注册; BPI enabled, 分配了key encryption key (KEK) .
􀃔 online(pt)    CM 已注册; BPI enabled,分配了traffic encryption key (TEK) .
􀃔 reject(m)      CM 没有尝试去注册; 注册由于坏的mic而被拒绝.
􀃔 reject(c)        CM 没有尝试去注册; 注册由于坏的COS 而被拒绝.
􀃔 reject(r)        CM 没有尝试去注册; 注册由于没有可用的资源而被拒绝.
􀃔 reject(pk)      KEK modem key 分配被拒绝.
􀃔 reject(pt)      TEK modem 分配被拒绝.
􀃔 offline CM      不在线.

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offline          Cable modem considered offline
init(r1)        Cable modem sent initial ranging
init(r2)        Cable modem is ranging
init(rc)        Cable modem ranging complete
init(d)          Dhcp request received
init(i)          Dhcp reply received; IP address assigned
init(t)          TOD exchange started
init(o)        Option file transfer started
online        Cable modem registered, enabled for data
online(d)        Cable modem registered, but network access for the cable modem is disabled
online(pk)      Cable modem registered, BPI enabled and KEK assigned
online(pt)      Cable modem registered, BPI enabled and TEK assigned
reject(pk)      KEK modem key assignment rejected
reject(pt)      TEK modem key assignment rejected
reject(m)      Cable modem did attempt to register; registration was refused due to bad MIC ( Message Integrity Check )
reject(c)        Cable modem did attempt to register; registration was refused due to bad COS ( Class of Service)

更詳細請看
[url=]http://www.cisco.com/en/US/tech/tk86/tk168/technologies_tech_note09186a00801494b8.shtml[/url]