Re: Using EIGRP Variance

Indeed (you could be wrong :)
Admin distance is never ever compared to a protocol metric.
As for EIGRP, the advertising neighbour metric has to be better (strict)
than our metric for it to be a feasible sucessor.

Why ? Because that way you are sure that he is not sending back the
traffic to you, thus making a loop. Why strict ? Because EIGRP considers
0 as a valid cost. Weird, but that's the way it is.

-Carlos

Tony Singh @ 13/05/2012 15:51 -0300 dixit:
> Does the composite metric of the 2nd route not need to equal or better the admin distance of the preferred route for this to work, I could be wrong.
>
> BR
>
> Sent from my iPhone on 3
>
> On 13 May 2012, at 16:24, "Shahid Mushtaq"<bxperts_at_gmail.com> wrote:
>
>> Dear Forum,
>>
>>
>>
>> I am facing the issue with EIGRP Un-Equal cost load balancing. Even by using
>> variance the link with low cost is not installed inside routing table.
>>
>>
>>
>> Below is the EIGRP topology table and the configuration.
>>
>>
>>
>> ================================
>>
>> R6#show ip eigrp topology 10.10.24.0 255.255.255.0
>>
>> IP-EIGRP (AS 100): Topology entry for 10.10.24.0/24
>>
>> State is Passive, Query origin flag is 1, 1 Successor(s), FD is 624896
>>
>> Routing Descriptor Blocks:
>>
>> 10.10.1.5 (FastEthernet0/0), from 10.10.1.5, Send flag is 0x0
>>
>> Composite metric is (624896/624896), Route is Internal
>>
>> Vector metric:
>>
>> Minimum bandwidth is 4096 Kbit
>>
>> Total delay is 3000 microseconds
>>
>> Reliability is 255/255
>>
>> Load is 1/255
>>
>> Minimum MTU is 1476
>>
>> Hop count is 2
>>
>> 10.10.1.3 (FastEthernet0/0), from 10.10.1.3, Send flag is 0x0
>>
>> Composite metric is (833280/833280), Route is Internal
>>
>> Vector metric:
>>
>> Minimum bandwidth is 3072 Kbit
>>
>> Total delay is 3000 microseconds
>>
>> Reliability is 255/255
>>
>> Load is 1/255
>>
>> Minimum MTU is 1500
>>
>> Hop count is 2
>>
>> ==========================================
>>
>> R6#sh run | s eigrp
>>
>> router eigrp 100
>>
>> variance 2
>>
>> network 10.10.1.1 0.0.0.0
>>
>> metric weights 0 1 0 0 0 0
>>
>> no auto-summary
>>
>> neighbor 10.10.1.5 FastEthernet0/0
>>
>> neighbor 10.10.1.3 FastEthernet0/0
>>
>> =========================================
>>
>>
>>
>> Regards,
>>
>>
>>
>>
>> Shahid
>>
>>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net