The MPLS WG Archive

["N.Suresh" <nsuresh@cdotb.ernet.in>]

Hi all,
    I am implementing the LDP on linux..
    i have some queries.

   (1)   The Hello Message send on as multicast on a Multicast socket. Suppose
  that after adjacency discvery a connection is established between the
  two machines. Furthor LDP message transmission is going on the TCP
  socket. To identify the link usage we want again tranceive Hello
  message. I have the doubt that which socket we want to be use for the
  Hello message, whether the multicasted socket or the TCP socket.

(2)  If the  next hop has changed, and I have sent Label Abort msg to that
  hop. Will it be reach at there?. Then what is the significance of the
  Label Aborted message?

(3)  The Address message is used to send the Interface message to the next
  hop. But the Address Family field of the Address message tells the
  address types are either IPv4 or IPv6. What is it .

  (3.1) Is it a string value?. Actually interface address is a 48 bit address of the
   interface.
  (3.2) So how it can be either IPv4 or IPv6?.
  (3.3) The interface address are taken care by the Link Level Layers.
   So what is the need for the LDP to care by the interface address.
   One of the ans. is to identify the link through which the Hello
   msg. is comming.

    anybody has any idea?

    thanx in advance
    regards

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