Number of nodes exceeds node-field-size

[Huiwen Li <huiwenli@nortelnetworks.com>]

Hi,

I am simulating with a relatively large topology, which has 200 nodes as
sender and 200 nodes as receiver. When I ran ns, it gave me the error
message:

Number of nodes exceeds node-field-size of 7 bits

And I found this is defined in Simulator instproc check-node-sum, which is
called in Simulator instproc node. I don't know if I could change this
setting or there is any other way to define a pretty large topology?

Thanks a lot,
Huiwen