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188 Telindus 2400
Chapter 9
User manual
Configuring routing
Element
Description
splitHorizon
Use this element to enable or disable split horizon
operation.
Default:poisonedReverse
Range: enumerated, see below
The splitHorizon element has the following values:
Value
Description
disabled
Split horizon is disabled.
enabled
Split horizon is enabled.
Split horizon operation prevents that routing information
exits the interface through which the information was
received in the first place. This optimises communications among multiple routers, particularly when links are
broken. It also prevents routing loops.
poisonedReverse
Poisoned reverse split horizon is used.
Whereas “simple” split horizon simply omits the routes
learned from one neighbour in updates sent to that
neighbour, poisoned reverse split horizon includes such
routes in updates but sets their metrics to infinity.