IE实验中的多播资料

Helper-map for Broadcast to multicast conversion and vice versa. The following is an example which illustrates the use of the helper-map command at the first-hop and the last-hop, to convert a broadcast stream directed to port 2000 to a mu


  Helper-map for Broadcast to multicast conversion and vice versa.
  The following is an example which illustrates the use of the helper-map command at the first-hop and the last-hop, to convert a broadcast stream directed to port 2000 to a multicast stream and back.
  
  On the first hop router
  -----------------------
  The following example converts broadcast streams to port 2000 to a multicast stream(G = 224.5.5.5)
  
  int < ... > /* incoming interface of broadcast stream */
  ip multicast helper-map broadcast 224.5.5.5 101
  ip pim dense
  .....
  
  ip forward-protocol udp 2000
  access-list 101 permit udp any any eq 2000
  access-list 101 deny udp any any
  
  On the last hop router
  ---------------------
  
  int <...> /* incoming interface of multicast stream */
  ip multicast helper-map 224.5.5.5 178.21.34.255 101
  ip pim dense
  .....
  
  
  ip forward-protocol udp 2000
  access-list 101 permit udp any any eq 2000
  access-list 101 deny udp any any
  
  Note:
  o Configuring the multicast helper map command (to convert multicast to
  broadcast) will also automatically configure "ip igmp join-group "
  on the interface. The router must be joined to the multicast group to be translated to a broadcast address.
  o In Cisco IOS 12.0, it is necessary to configure the interface command "ip directed-broadcast" along with helper-map command. By default, it is turned off.
  

【责编:admin】

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郑重声明:本文版权归原作者所有,转载文章仅为传播更多信息之目的,如作者信息标记有误,请第一时间联系我们修改或删除,多谢。

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