Re: Using EIGRP Variance

Dear Shahid,

The problem is EIGRP feasibility condition(FC) is not met.
10.10.1.5 is your current succesor . But 10.10.1.3 is not the feasible
succesor.This is due to the fact the AD (advertised distance) of 10.10.1.3
is 833280 is greater than feasible distance (624896)of current successor
10.10.1.5.
So FC condition is not met. To resolve this you have to do cost
manipulation in the downstream router to make 10.10.1.3 eligible to met FC
condition. After that you can use variance for unequal cost load balancing.

Thanks,
Shekhar

On Sun, May 13, 2012 at 7:24 PM, 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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Received on Sun May 13 2012 - 20:00:39 ART