Label Allocation in optical domain

["mitali J" <mitali5@lycos.com>]

Hi All,
        I have a doubt related to the label allocation
in GMPLS. If I have two nodes A and B directly
connected by a bi-directional STM-16 link. Further
assume that this link is able to switch connections of
VC-4 granularity only. I will number 16 VC-4s in STM
-16 as say from 1...16 that are avaliable for
allocation. If a request comes from node A to
establish the bi-directional VC-4 connection (with
suggested label say 2, upstream label 2). Node B
allocates the label 2 to this connection. This means
that the available labels at nodes A and B after
successful establishment of the connection are
1,3,4...16 at both the ends. Now if a request comes
from A to establish a uni-directional connection from
A to B with suggested label as say 1. Node B will go
ahead and allocate label 1. This means label 1 is
allocated in direction of data flow from A to B but
the same label viz. 1 is free for allocation (for some
uni-directional LSP establishment from B to A) for the
data flow from node B to A.

Is this method of allocation correct ?

I would appreciate if anyone can provide link to information on fiber and lambda allocation too.

Regards,
mitali.