lamav Tue, 04/13/2010 - 08:24

Hi, Bill:


STP is a layer 2/switching technology that prevents a packet from being endlessly forwarded in circles on a switched network by blocking redundant links.


Split horizon is a tool used by routers running distance vector routing proctocols when advertising routes to prevent a packet from being caught in a loop on a routed network after reconvergence.


Makes sense?


Victor

kevin.hu Tue, 04/13/2010 - 08:28

STP is a layer 2 loop prevention tool.  STP uses BPDU to learn and block ports to break the loop.  SH is a layer 3 loop prevention tool.  SH states that route learned from an interface will not be advertised back out to that same interface.

kevin.hu Tue, 04/13/2010 - 08:29

STP is a layer 2 loop prevention tool.  STP uses BPDU to learn and block ports to break the loop.  SH is a layer 3 loop prevention tool.  SH states that route learned from an interface will not be advertised back out to that same interface.

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