EIGRP bandwidth question....

Answered Question
Apr 12th, 2010
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This is a question that never got answered on the cisco learning network fourm that I am curious about....I never could find the answer.


If you change the default EIGRP bandwidth from 50% to something else with the ip bandwidth-percent EIGRP AS %% command, where can you look to see this change reflected?


Thank you,

Jimmy

Correct Answer by hstoddart about 7 years 1 month ago
Correct Answer by Tharak Abraham about 7 years 1 month ago

Jimmy,


You can indirectly check this by having a close analysis on how EIGRP paces its packet.

The "sh ip eigrp interface" should give you a column indicating the pacing time in millisecs.


Each time a data packet is queued,  EIGRP determines how long to wait before sending the packet based on the formula


(8 * 100 * packet size in bytes) / (bandwidth in kbps * bandwidth           percentage)


This does have an effect on the protocols behaviour on the links !


Hope that helped !

Correct Answer by Jon Marshall about 7 years 1 month ago

Jimmy


Do you mean other than doing a "sh run" because if you modify the eigrp bandwidth on an interface it will be reflected in the running config.


Jon

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Correct Answer
Jon Marshall Tue, 04/13/2010 - 01:26
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Jimmy


Do you mean other than doing a "sh run" because if you modify the eigrp bandwidth on an interface it will be reflected in the running config.


Jon

Correct Answer
Tharak Abraham Tue, 04/13/2010 - 05:05
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Jimmy,


You can indirectly check this by having a close analysis on how EIGRP paces its packet.

The "sh ip eigrp interface" should give you a column indicating the pacing time in millisecs.


Each time a data packet is queued,  EIGRP determines how long to wait before sending the packet based on the formula


(8 * 100 * packet size in bytes) / (bandwidth in kbps * bandwidth           percentage)


This does have an effect on the protocols behaviour on the links !


Hope that helped !

jimmysands73_2 Tue, 04/13/2010 - 17:22
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Thank to all that replied.  I was really just interested in this question because it never got answered on the Cisco Learning Network fourm.



I think the correct answer is the only place we will see this change is the startup/running config.

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