[ns] Realistic IPv4 forwarding in a Node?

[Rob Ballantyne <ballanty@sfu.ca>]

  Hi All,

  I've tried a couple of questions and haven't gotten any responses.
I'm guessing that that's due to the fact that they might have beeen
too narrow.

  Here's a question I hope isn't:  Is there a "realistic" IPv4
forwarding
Node or a way to use them so that they are.  By realistic I mean are
capable of doing variable subnet length matching (including most
specific
route matching)?  

  For example:

  If a router contained routes:

    192.168.0.0/16 -> next hop addr A
    192.168.1.0/24 -> hext hop addr B
    10.0.0.0/8     -> next hop addr C

  Since ns-2 uses 32 bits for addresses the v4 addresses shouldn't be
a problem.  Hierarchical routing though seems to use a fixed bit
configuration
at each node so the above variable length matches wouldn't work there.

  Any help greatly appreciated!

Cheers,

Rob
-- 
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| Rob Ballantyne                         |                              
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| email: ballanty@cecm.sfu.ca            |             _____            
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| Research Manager                       |               |              
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| Centre for Experimental and            |    -----------O-----------   
|
|    Contructive Mathematics             |                              
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| Simon Fraser University                |                              
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| Burnaby, BC, CANADA    V5A 1S6         |                              
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