[Tex/LaTex] Forest have label for nodes that is separate from content

Question

I am trying to get a hierarchical tree built using the forest package where each node is labelled with the parent nodes label + the node index, e.g,:

I've tried a lot of different things, including various node walks.
There are two issues:
1) labels appear directly above nodes (e.g., right on the edge line)
2) I can't get this recursive labelling working at all – the best I can do is make each nodes label "parentIndex.nodeIndex"

Answer 1

Since you not provide code for your tree, I use some my tree:

\documentclass[border=3mm]{standalone}
\usepackage[edges]{forest}

\begin{document}
\tikzset{every label/.style={xshift=-4ex, text width=6ex, align=right, 
                             inner sep=1pt, font=\footnotesize, text=red}}
  \begin{forest}
    for tree={              % style of tree nodes
      font=\footnotesize,
      draw, semithick, rounded corners,
            align = center,
        inner sep = 2mm,
                            % style of tree (edges, distances, direction)
             edge = {draw, semithick, -stealth},
    parent anchor = east,
     child anchor = west,
             grow = south,
    forked edge,            % for forked edge
            l sep = 12mm,   % level distance
         fork sep = 6mm,    % distance from parent to branching point
                }
    [Multimedia\\ RSS,label=1
      [Multimedia\\ Content,label=1.1]
      [Multimedia\\ Content,label=1.2.3.4]
    ]
  \end{forest}
\end{document}