in ns2 ospf what does 'mt' mean in most code

Question

In origin code in ospf in ns2, what does 'mt' mean? Does it mean any middle node in the path? Or means multi-topo, which means it contains all middle nodes.

eg: in ospf.cc

OspfPaths::iterator OspfPaths::insertPath(int destId, int mtid, int cost, int nextHop) 

Answer 1

Please read ospf.h for descriptions ...

71  //**********************************************************************************
72  // MTLink: representing MultiTopology id and metric attached to a link
73  //**********************************************************************************

78      int mtId_; // MultiTopology id

90  //**********************************************************************************
91  // MTLinkList: List of MTLink attached to a link
92  //**********************************************************************************

111     MTLinkList MTLinkList_; //MT id's and metrics attached to the link

292     int mtId_; // multiTopology id
372     // lookup the path's cost for the destId and Mtid
385     // lookup next hop list for the destId and Mtid
439     // insert next hop list for destId and mtid
463     // returns the iterator for the less cost path for mtid
1084        // returns the path for destId and Mtid