From: Victor Cappuccio (cvictor@protokolgroup.com)
Date: Sat Apr 22 2006 - 12:19:13 GMT-3
I found this link useful
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009437d.shtml#netdiag
Eigrp load balance with a variance = 1, meaning that Equal Cost FD is
needed in order to accomplish load balancing
To get your ratio problem you will need (Composite Metric of R3) *5 =
(Composite Metric of R1)* 1
Need to manipulate the BW or the DLY (by default) to make this happens
{(10e7/minbw + dly/10) * 256} *5 = {(10e7/minbw + dly/10)*256}*1
Since you need that the FDs of the neighbors be in in the variance
factor, in order to do unequal load balancing
Try to clear you Routing Table a couple of time because you are only
installing one path to the destination and the AD from R1 < FD to R3
HTH
Victor.
allboutcisco escribis:
> Hi group,
>
> I'm going nuts on this. Appreciate if someone could explain to me what is happening. In regards to eigrp unequal cost loadbalancing, managed to tweak the delay on s0/0.12 in that it is 5 times the metric via s0/0.23 (the ratio between the metrics is 5:1). Configured a variance of 5 on R2. Yet the path is still preferred over s0/0.23 instead of doing a 5:1 on both s0/0.23 & s0/0.12.
>
> R2#sh ip ei to 100 164.1.18.0 255.255.255.0
> IP-EIGRP (AS 100): Topology entry for 164.1.18.0/24
> State is Passive, Query origin flag is 1, 1 Successor(s), FD is 3026432
> Routing Descriptor Blocks:
> 164.1.23.3 (Serial0/0.23), from 164.1.23.3, Send flag is 0x0
> Composite metric is (3026432/2181120), Route is Internal
> Vector metric:
> Minimum bandwidth is 1280 Kbit
> Total delay is 40100 microseconds
> Reliability is 255/255
> Load is 1/255
> Minimum MTU is 1500
> Hop count is 2
> 164.1.12.1 (Serial0/0.12), from 164.1.12.1, Send flag is 0x0
> Composite metric is (15132160/28160), Route is Internal
> Vector metric:
> Minimum bandwidth is 256 Kbit
> Total delay is 200480 microseconds
> Reliability is 255/255
> Load is 1/255
> Minimum MTU is 1500
> Hop count is 1
> R2#
> Rack1R2#sh ip rou 164.1.18.0
> Routing entry for 164.1.18.0/24
> Known via "eigrp 100", distance 90, metric 3026432, type internal
> Redistributing via eigrp 100
> Last update from 164.1.23.3 on Serial0/0.23, 00:20:19 ago
> Routing Descriptor Blocks:
> * 164.1.23.3, from 164.1.23.3, 00:20:19 ago, via Serial0/0.23
> Route metric is 3026432, traffic share count is 1
> Total delay is 40100 microseconds, minimum bandwidth is 1280 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 2
>
> I apologize if it's a silly question, but it just doesn't make any sense since the metrics are already in a 5:1 ratio. Appreciate any pointers on my mistakes.
>
> Sincere thanks.
>
> -kts
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Mon May 01 2006 - 11:41:58 GMT-3