Re: Using EIGRP Variance

Ok good explanation I actually did mean advertised and not admin distance, ah nuts

BR

Sent from my iPhone on 3

On 13 May 2012, at 20:34, Carlos G Mendioroz <tron_at_huapi.ba.ar> wrote:

> 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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>>>
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>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina

Blogs and organic groups at http://www.ccie.net
Received on Sun May 13 2012 - 20:38:49 ART