JDmailNY
join:2007-12-02
Pearl River, NY | What is Route Poisoning
I have been studying for the CCNA and Route Poisoning in two of my referances seem to not agree.
Is Route Poisoning a cause to a problem or is it a solution ????
What is the correct definition
Thanks |
|
Bink
join:2006-05-14
Denver, CO | »en.wikipedia.org/wiki/Route_poisoning |
|
jza80
join:2005-10-29
Sacramento, CA
1 edit | reply to JDmailNY
Its a solution to a problem. Theres route poisoning and split horizon with poison reverse.
.
.
This is what my book says:
1. The split horizon rule says that a router should not advertise a network through the interface from which the update came.
2. Route poisoning is used to mark the route as unreachable in a routing update that is sent to other routers. Unreachable is interpreted as a metric that is set to the maximum. For RIP, a poisoned route has a metric of 16.
3. The rule for split horizon with poison reverse states when sending updates out a specific interface, designate any networks that were learned on that interface as unreachable.
Split horizon with poison reverse is a combination of split horizon and route poisoning. Although the split horizon part of it works differently then split horizon itself.
.
.
All of the above are methods to prevent routing loops. |
|
