3 Comments on “Drag the term on the left to its definition on the right.”

1. vota pota says:

   April 1, 2016 at 11:50 am

   Poison reverse is another way of avoiding routing loops. Once you learn of a route through an interface, advertise it as unreachable back through that same interface.

   Once a router discovers it has lost contact with a neighboring router, it will immediately forward a routing update with the inoperable route metric set to infinity. Additionally, the router will broadcast the route with an infinite metric.

   LSA are used to reliably flood link-state advertisement packets. LSA is sent to all routers in the OSPF area to signal a change in topology. This causes all routers to recalculate all of their routes using the Djikstra (SPF) algorithm.

   
   
   
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2. Henry Chan says:

   April 4, 2016 at 5:44 am

   Poison reverse – fail – advertise back
   LSA – flood

   
   
   
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3. Henry Chan says:

   April 4, 2016 at 5:45 am

   Hold down – don’t update yet

   
   
   
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