Little math here .
Basically it is exponential factor determined by using the equation.
:-)
From: [email protected]
Date: Wed, 17 Mar 2010 17:21:00 -0400
To: [email protected]
CC: [email protected]
Subject: Re: [OSL | CCIE_RS] BGP Route Dampening
The example in the Cisco Press book rather. The half-life actually will
determine the rate of decay. As I said, the time that it takes for the penalty
to decay by half is the half-life time. Therefore, the half-life determines
the decay rate.
On Wed, Mar 17, 2010 at 4:54 PM, Joe Astorino <[email protected]> wrote:
Actually, that is not correct. The half-life is the amount of time it takes
for the penalty to decay by half of the original value. For instance -- If you
have a penalty of 1000 on a prefix assigned, with a default half-life of 15
minutes, than after 15 minutes the penalty will be at 500.
The specific example that was brought up on cisco.com appears to be inaccurate.
Don't worry, it's not the first time : )
On Wed, Mar 17, 2010 at 4:50 PM, Patrice Ngassam <[email protected]> wrote:
15 minutes is the time it will take to decrease the penalty to zero, in 7.5
minutes the penalty will reach half of its initial value. half-time has more to
do with Penalty than Time.
Patrice Ngassam
Ceritified Cisco CCNP, CCDP, CCIP
From: [email protected]
Date: Wed, 17 Mar 2010 16:35:19 -0400
To: [email protected]
CC: [email protected]
Subject: Re: [OSL | CCIE_RS] BGP Route Dampening
Well, what is the original penalty value given?
On Wed, Mar 17, 2010 at 4:31 PM, Cristian Nedelcu
<[email protected]> wrote:
"The rate of decrease in the penalty is a function of the half-life. The
half-life is the amount of time for the penalty to decrease to half of its
current value. If the half-life is 15 minutes, the penalty decreases to 500 in
7.5 minutes."
>From BGP-4 Command and Configuration Handbook
why 7,5 min and not 15 min ?
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Regards,
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Sr. Technical Instructor - IPexpert
Mailto: [email protected]
Telephone: +1.810.326.1444
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Voice, Security & Service Provider) certification(s) with training locations
throughout the United States, Europe, South Asia and Australia. Be sure to
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Regards,
Joe Astorino - CCIE #24347 (Earned not bought)
Sr. Technical Instructor - IPexpert
Mailto: [email protected]
Telephone: +1.810.326.1444
Live Assistance, Please visit: www.ipexpert.com/chat
eFax: +1.810.454.0130
IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio
Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S,
Voice, Security & Service Provider) certification(s) with training locations
throughout the United States, Europe, South Asia and Australia. Be sure to
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website at www.ipexpert.com
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