From: Joe Soricelli (jsoricelli@xxxxxxxx)
Date: Fri Oct 15 1999 - 12:37:11 GMT-3
The default constants are k1=k3=1 and k2=k4=k5=0.
This results in BW and DLY being used.
-joe
------------------------------------------------------------------
Joseph M. Soricelli, CCIE #4803, CCNP, CCSI #20666
EMAIL: jsoricelli@ccci.com
Chesapeake Network Solutions
8110 Gatehouse Road, Suite 101E Phone: (703) 207-0757
Falls Church, VA 22042 Fax: (703) 207-0441
FYI - About Chesapeake: We are a Cisco Certified Training and
professional services partner. We offer most of the Cisco
training courses as well as training for Fore, NetScout, and
CheckPoint-1 Firewalls. We provide network consulting services,
including design, network health, management, firewall,
and problem solving. We now have 23 CCIEs on our staff
of instructor/consultants.
-------------------------------------------------------------------
-----Original Message-----
From: John Garrett <John.Garrett.B@bayer.com>
To: -.* : <-.* :>
Cc: -.* : <-.* :>
Date: Friday, October 15, 1999 8:46 AM
Subject: Re: EIGRP route calculation
>Since the default configuration of EIGRP only uses K1 and K3, what values
are
>given to the other parameters?
>
>If it is 0, then it looks like the entire route choice depends on k1 only.
>
>John Garrett
>
>
>
>
>groupstudy nobody <nobody@groupstudy.com> on 10/15/99 12:30:56 AM
>Please respond to "DDA.RFC-822=jsoricelli@ccci.com/P=Internet/A= /C=us" @
X400
>To: "DDA.RFC-822=ccielab@groupstudy.com/P=Internet/A= /C=us"@X400
>cc:
>
>Subject: Re: EIGRP route calculation
>
>The metric is :
>
>{[k1*BW + (k2*BW)/(256-LOAD) + k3*DLY]*[k5/RLY + k4]}*256
>
>Where BW is 10^7/BW on an inteface
>Where DLY is DLY on an interface/10
>
>Smallest BW plus sum of DLYs is the default metric.
>
>-joe
>------------------------------------------------------------------
> Joseph M. Soricelli, CCIE #4803, CCNP, CCSI #20666
> EMAIL: jsoricelli@ccci.com
>
> Chesapeake Network Solutions
> 8110 Gatehouse Road, Suite 101E Phone: (703) 207-0757
> Falls Church, VA 22042 Fax: (703) 207-0441
>
> FYI - About Chesapeake: We are a Cisco Certified Training and
> professional services partner. We offer most of the Cisco
> training courses as well as training for Fore, NetScout, and
> CheckPoint-1 Firewalls. We provide network consulting services,
> including design, network health, management, firewall,
> and problem solving. We now have 23 CCIEs on our staff
> of instructor/consultants.
>-------------------------------------------------------------------
>
>-----Original Message-----
>From: josh@mstates.com <josh@mstates.com>
>To: 'Joe Soricelli' <jsoricelli@fridge.ccci.com>
>Date: Thursday, October 14, 1999 4:22 PM
>Subject: RE: EIGRP route calculation
>
>
>>Can someone please provide the actual formula for calculating the metric
on
>>EIGRP?
>>
>>-----Original Message-----
>>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>>Joe Soricelli
>>Sent: Thursday, October 14, 1999 12:58 PM
>>To: ccielab@groupstudy.com
>>Subject: Re: EIGRP route calculation
>>
>>
>>The maps helped out, Thanks.
>>
>>I can tell you that unless the defaults have been altered, that Choice A
>>will give a better metric due to bandwidth speeds.
>>
>>When you actually do the calculation based on the show int stats below,
you
>>get 68352 for Choice A and 2178048 for Choice B. Not even close!!
>>
>>-joe
>>------------------------------------------------------------------
>> Joseph M. Soricelli, CCIE #4803, CCNP, CCSI #20666
>> EMAIL: jsoricelli@ccci.com
>>
>> Chesapeake Network Solutions
>> 8110 Gatehouse Road, Suite 101E Phone: (703) 207-0757
>> Falls Church, VA 22042 Fax: (703) 207-0441
>>
>> FYI - About Chesapeake: We are a Cisco Certified Training and
>> professional services partner. We offer most of the Cisco
>> training courses as well as training for Fore, NetScout, and
>> CheckPoint-1 Firewalls. We provide network consulting services,
>> including design, network health, management, firewall,
>> and problem solving. We now have 23 CCIEs on our staff
>> of instructor/consultants.
>>-------------------------------------------------------------------
>>
>>-----Original Message-----
>>From: Jason Aarons <jaarons@hotmail.com>
>>To: jsoricelli@fridge.ccci.com <jsoricelli@fridge.ccci.com>;
>>ccielab@groupstudy.com <ccielab@groupstudy.com>
>>Date: Thursday, October 14, 1999 2:27 PM
>>Subject: Re: EIGRP route calculation
>>
>>
>>>Here is a map of the choices. Choice A has not been installed (yet) but
>>>neeed to know if it will create a better EIGRP metric than Choice B.
>Also,
>>>this is good stuff..since I included load with EIGRP into the picture..
>>>
>>>
>>>Choice A.
>>>Source---FE---Router1--DS3--Router2--FE---Router3---OC12---Router4---FE--
-
>-
>>Destination
>>>
>>>Choice B.
>>>Source----FE---Router1----T1----Router4----FE----Desination
>>>
>>>
>>>After mapping it out, I added some details below and corrected some
>>errors -
>>>jason
>>>
>>>
>>>----Original Message Follows----
>>>From: "Joe Soricelli" <jsoricelli@ccci.com>
>>>To: "Jason Aarons" <jaarons@hotmail.com>
>>>Subject: Re: EIGRP route calculation
>>>Date: Thu, 14 Oct 1999 08:33:56 -0400
>>>
>>>Jason-
>>>
>>>A little more detail please. First, a map would be good. Second, are
you
>>>trying to figure out why one route was choosen over another?
>>>
>>>-joe
>>>------------------------------------------------------------------
>>>
>>>-----Original Message-----
>>>From: Jason Aarons <jaarons@hotmail.com>
>>>To: ccielab@groupstudy.com <ccielab@groupstudy.com>
>>>Date: Wednesday, October 13, 1999 5:47 PM
>>>Subject: EIGRP route calculation
>>>
>>>
>>> >Problem:
>>> >
>>> >Using K1, K2, K3 (bandwidth, delay, load) determine whether the metric
>>via
>>> >Router1-Router2-Router3 is better Router1s direct T-1 (and given
>>> >load).
>>> >
>>> >
>>> >ROUTER1#show int serial5/0
>>> >Serial5/0 is up, line protocol is up
>>> > MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec, rely 255/255, load 1/255
>>> >
>>> >ROUTER2#show int faste0/0
>>> >FastEthernet0/0 is up, line protocol is up
>>> > MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load
1/255
>>> >
>>> >ROUTER3#show int pos5/0/0
>>> >POS5/0/0 is up, line protocol is up
>>> > MTU 4470 bytes, BW 155000 Kbit, DLY 100 usec, rely 255/255, load
>3/255
>>> >
>>>Router4#show int faste5/1/0
>>>FastEthernet5/1/0 is up, line protocol is up
>>> MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255
>>>
>>> >
>>> >
>>> >! Router1 a direct T-1 to destinateion with metric 2181634
>>> >router1#show ip route x.y.z.a
>>> >Routing entry for x.y.z.a/24
>>> > Known via "eigrp 260", distance 110, metric 2181634, type internal
>>> > Redistributing via eigrp 120
>>> > Last update from x.y.z.b on Serial3/2, 00:33:11 ago
>>> > Routing Descriptor Blocks:
>>> > * x.y.z.b, from x.y.z.b, 00:33:11 ago, via Serial3/2
>>> > Route metric is 2181634, traffic share count is 1
>>> > Total delay is 20200 microseconds, minimum bandwidth is 1544 Kbit
>>> > Reliability 255/255, minimum MTU 1500 bytes
>>> > Loading 7/255, Hops 2
>>> >
>>>
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