Thursday, March 16, 2006
Bandwidth percent command for EIGRP. (Question #40)
Consider the following output when the help string for the EIGRP bandwidth-percent command is prompted with "?"
R1(config-if)#ip bandwidth-percent eigrp 22 ?
<1-999999> Maximum bandwidth percentage that EIGRP may use
It looks like one can configure percent values greater than 100. Is this a bug? Why would configuring bandwidth percent greater than 100 ever make sense?
R1(config-if)#ip bandwidth-percent eigrp 22 ?
<1-999999> Maximum bandwidth percentage that EIGRP may use
It looks like one can configure percent values greater than 100. Is this a bug? Why would configuring bandwidth percent greater than 100 ever make sense?
Comments:
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You can configure EIGRP to use more than 100% of "available" bandwidth, because you can lie to it about how much bandwidth you have. You could, for example, tell EIGRP that your T1 is a 128Kbps connection and that you want routing updates to consume no more than 400% of bandwitdh. In this case, EIGRP will allow itself to send up to 512Kbps of traffic to the neighbor on that interface.
The only time I can think of this as being actually useful is in a point to multipoint FR situation, where you have a variety of CIRs and have to set the interface bandwidth based on the lowest one. Then you might want to bump up EIGRP's limit to make sure it converges quickly.
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The only time I can think of this as being actually useful is in a point to multipoint FR situation, where you have a variety of CIRs and have to set the interface bandwidth based on the lowest one. Then you might want to bump up EIGRP's limit to make sure it converges quickly.
# posted by 
: Sat Mar 18, 05:40:00 AM 2006
: Sat Mar 18, 05:40:00 AM 2006 
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