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Query on RFC3036

  • From: Ravindra_Joshi <Ravindra_Joshi@BBV.Satyam.com>
  • Date: Wed, 24 Jan 2001 14:40:34 +0530

Title: Query on RFC3036

Hello,

Ref. doc : Request for Comments: 3036 (LDP Specification)                
Discovery messages provide a mechanism whereby LSRs indicate their presence in a network by sending a Hello message periodically.  This is transmitted as a UDP packet to the LDP port at the "all routers on this subnet" group multicast address. 

As per our understanding Multicasting is supported by only Class D networks....
If we hav a class B or C network, how do we send this message ?
In other words, is "all routers on this subnet group" there on Class B or C n/w?
If it's possible - pls let me know the procedure..

I might have missed something very basic - pls giv me the relevant pointer for clarifiacation..

Regards,
RB