Transcript Distance Vector Routing Pertemuan 14 1

Pertemuan 14
Distance Vector Routing
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Discussion Topics
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Distance vector routing updates
Distance vector routing loop issues
Defining a maximum count
Eliminating routing loops through split horizon
Route poisoning
Avoiding routing loops with triggered updates
Preventing routing loops with hold-down timers
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Distance Vector Updates
Problem: Routing Loops
• Routing loops can occur when inconsistent
routing tables are not updated due to slow
convergence in a changing network.
Problem: Counting to Infinity
Solution: Defining a Maximum
for Infinity
Solution: Split Horizon
Solution: Route Poisoning
Solution: Triggered Updates
Solution: Holddown Timers