First value is for TOS where only 0 is supported must have been a pre curser to some EIGRP QoS which didn't kick off same with OSPF which supports only TOS 0 but isn't used in the algorithm.
The confusing thing with this is in the redistribute IOS command under the EIGRP process you have K1 Bandwidth K3 Delay K4 Reliability K2 Load K5 MTU default-metric uses the same order default-metric K1 Bandwidth K3 Delay K4 Reliability K2 Load K5 MTU But metric weights uses "the correct order" K1 Bandwidth K2 Load K3 Delay K4 Reliability K5 MTU K6 is for metric wide 64-bit EIGRP computations (named configs only) for the correct calculation of 1G+ links Where context sensitive help will give you the hand you need for default-metric & redistribute commands but not for metric weights... why did the coder do that... Ah well -- BR Tony Sent from my iPad > On 31 Mar 2014, at 19:04, Bob McCouch <[email protected]> wrote: > > Hi Jim, > > The formula is right above table 1: > > EIGRP composite cost metric = 256*((K1*Bw) + (K2*Bw)/(256 - Load) + > (K3*Delay)*(K5/(Reliability + K4))) > > So your solution (ignoring the leading 0, which off the top of my head I > forget the significance of -- maybe that's the magic new K they added in > recent code), would use BW, Delay, and then 0/Reliability+1, which clearly > wouldn't do much for you. Off hand, I forget if IOS just ignores K4 if K5 > is not also set, but you'd kind of think it would need to so as to avoid a > divide-by-zero error. > > I always remember that the default is "10100" because it looks like 10/100 > as in a switch port. So obviously positions 1 & 3 (K1, and K3) rep the > default weighted values of BW and Delay. I'd look up anything else, as the > consequences are huge to forgetting which on is reliability and which one > is load (as you've observed). > > >> On Mon, Mar 31, 2014 at 1:43 PM, Jim Newell <[email protected]> wrote: >> >> Thanks Bob. I navigated to that link yesterday while trying to complete a >> task >> and looked at the items listed in table 1 and the items in table 2 and >> made an >> assumption that they should be matched up according to the listed order. >> When >> checking the proposed solution later I had one value in the wrong location. >> >> Requirement was to use delay, load and bandwidth: >> My solution: metric weights 0 1 0 1 1 0 >> Proposed solution: metric weights 0 1 1 1 0 0 >> >> I have run into issues with this topic before, so it may just be that I am >> missing something obvious >> >> Much appreciated >> Kind regards >> jpn >> >> ------ Original Message ------ >> Received: 12:12 PM EDT, 03/31/2014 >> From: Bob McCouch <[email protected]> >> To: Jim Newell <[email protected]>Cc: CCIE OSL <[email protected] >> Subject: Re: [OSL | CCIE_RS] EIGRP Metric Weight >> >> Doc-CD is a good place to start: >> >> >> http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-mt/ire-15-mt-book/ire-enhanced-igrp.html#GUID-79D5B9EF-B4D4-4034-B275-347E866420C0 >> >> Support Home > Products > Cisco IOS and NX-OS Software > Cisco IOS > Cisco >> IOS Software Release 15M&T > Cisco IOS 15.1M&T > Cisco IOS 15.1(4)M > IP >> Routing: EIGRP Configuration Guide > EIGRP > EIGRP Cost Metrics >> >> >> >>> On Mon, Mar 31, 2014 at 8:59 AM, Jim Newell <[email protected]> wrote: >>> >>> Greetings, >>> I am not sure anyone else has had this same issue. I find myself always >>> failing tasks that require adjusting the metric weights under the EIGRP >>> process - something that should be easy points. I have searched >>> unsuccessfully for a good reference that shows how bandwidth, delay and >>> load >>> are mapped to values K1, K2, etc. If anyone has a good, reliable >> reference >>> that clears this up can you kindly point me to it. >>> >>> Much appreciated >>> Kind regards >>> jpn >>> >>> _______________________________________________ >>> Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: >>> >>> iPexpert on YouTube: www.youtube.com/ipexpertinc >> >> >> >> _______________________________________________ >> Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: >> >> iPexpert on YouTube: www.youtube.com/ipexpertinc > _______________________________________________ > Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: > > iPexpert on YouTube: www.youtube.com/ipexpertinc _______________________________________________ Free CCIE R&S, Collaboration, Data Center, Wireless & Security Videos :: iPexpert on YouTube: www.youtube.com/ipexpertinc
