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switching question
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| this question is from a question set. i have a doubt abt the right answer. as per the set it is b, but i think it is a. what do u think ?
Once the failure of a forwarding link is detected, which functionality allows a block port of a switch to quickly begin forwarding?
a. Portfast
b. UplinkFast
c. BacknoneFast
d. SwitchlinkFast
wud appreciate any quick responses, exam is on tuesday | |
| SureshHomepage 2002-05-26, 7:19 pm |
| Choice B is correct.
UplinkFast can enable a blocked port to more quickly enter the forwarding
state if a directly connected link fails.
BackboneFast allows faster convergence when a failure occurs on a link that is not directly attached.
In simple terms, UplinkFast enables faster recovery and convergence when a directly attached link fails whereas a BackboneFast allows faster convergence when a failure occurs on a link that is not directly attached.
Though it is not in picture here, the PortFast allows a computer that is directly connected to a switch to communicate
with the network immediately. | |
| hawk2000 2002-05-26, 7:24 pm |
| I'll go for B | |
| Snowbird 2002-05-28, 7:38 am |
| B is the correct answer. spanning tree portfast is only used to connect end users (at access layer )
Snowbird. | |
| yanoaaa 2002-05-28, 7:46 am |
| B>
Uplink fast.
Cisco press switching book page 165.
Uplink fast allows a blocked port on a switch to almost immediately begin forwarding after detecting the failure of the forwarding link, | |
| javed 2002-05-28, 11:20 am |
| thanks guys. i passed today with 881  | |
| docmeyer 2002-05-31, 9:08 am |
| I need to get off my duff and set an exam date myself! |
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