Re: Statically mapping broadcasts

From: Uchil Perera (uchil.groupstudy@yahoo.com)
Date: Sat Jan 05 2008 - 06:36:27 ARST


Hi,
   
  When you configure frame-relay map commands on the spoke routers you only need to specify one broadcast key word as it is mapped to the same DLCI
   
  ex.
  frame-relay map ip 1.1.1.1 301 broadcast
  frame-relay map ip 1.1.1.2 301
   
  If you configure broadcast key word on all the map statements, it will send redundant broadcast.
   
  ex.
  frame-relay map ip 1.1.1.1 301 broadcast
  frame-relay map ip 1.1.1.2 301 broadcast
   
  On the hub router, you need the broadcast key word for all the separate DLCI mappings
   
  frame-relay map ip 1.1.1.2 102 broadcast
  frame-relay map ip 1.1.1.3 103 broadcast
   
  Regards
   
  Uchil
  CCIE # 18536
   
   
  

Peter <engpeter@gmail.com> wrote:
  Experts,

Working in IEWB VOL2,

Reading in the task:

"Do not send any redundant broadcast traffic from the spokes to the hub"?

I understood not to "statically map" broadcast traffic from spokes to the
hub.

However, when configuring OSPF later, not to use neighbor, requires

broadcast to be correctly mapped for the 224.0.0.5 hellos to flow.

Any comment what they mean by: "Do not send any redundant broadcast traffic
from the spokes to the hub"?

Cheers,

Peter



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