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Home > Archive > CCNA > November 2001 > Loops!
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| I know that split horizon, route poisoning, and holddowns are for preventing loops, my question is how do an admin implment them? do they run by default or they have to be set?
TIA | |
| Silkysmoothe1 2001-11-10, 2:41 pm |
| Depends on what protocols you are working with otherwise, Yes! you would initiate these technologies. Some protocols will automaticaly initiate (rip) csma?
I'm at work,,not enough time to give details,,,,Darn IT-weekend jobs,,,,I'm sure somone can give more details,,,,
Sorry,,,, | |
| doctorcisco 2001-11-12, 11:19 am |
| quote:
Originally posted by web
I know that split horizon, route poisoning, and holddowns are for preventing loops, my question is how do an admin implment them? do they run by default or they have to be set?
TIA
They're on by default. They're in the material so that you learn what routing loops are, and the mechanisms used by distance-vector protocols to avoid them.
You can change the default value for the holddown time, which is definitely a "Just because you can doesn't mean you should" sort of thing.
There are additional issues with split horizon and frame relay under certain circumstances, but that's not really CCNA material.
HTH,
doctorcisco | |
| strikeattack 2001-11-12, 12:15 pm |
| Just like Spanning-Tree is enabled by default on all Catalyst switches, these types of mechanisms are also enabled by default on routers. The material covers them so that you are aware that they exist and what their functions are. | |
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| Big thanks to you guys  |
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