On-demand circuit question

From: Michael Law (htluo@xxxxxxxxx)
Date: Fri Feb 11 2000 - 22:27:58 GMT-3


   
   Question 1: Documentation CD about OSPF on-demand circuit:
   (
   http://127.0.0.1:8080/cc/td/doc/product/software/ios112/112cg_cr/5cboo
   k/5ciprout.htm#xtocid851854 ),
   It says 'You do not want to do on a broadcast-based network topology
   because the overhead protocols (such as hellos and LSAs) cannot be
   successfully suppressed, which means the link will remain up'.
   Can anyone explain what does 'broadcast-based network topology' mean?
   Does it mean 'ip ospf-network broadcast' or 'dialer map ...
   broadcast'?
   
   Question 2: When should I place a 'broadcast' parameter in 'dialer
   map'? And why?
   
   Thanks.
   
   Michael
   



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