From: Ivan (ivan@iip.net)
Date: Sat Mar 03 2007 - 17:20:36 ART
FC must be true.
FC: RD < FD
On Saturday 03 March 2007 22:04, Nicolas Vanderheyden wrote:
> Hello people from the list,
>
> I'm trying to do load-balancing with EIGRP by modifying the variance but
> the end router doesn't seem to enter both routes into its routing table.
>
> LAB is as follow:
>
> R5 ------ R6
> \ /
> \ /
> \ /
> R7
>
> Both R5 and R6 are redistributing routes learned via OSPF (running above R5
> and R6) into EIGRP.
>
> ####
> #R5#
> ####
> router eigrp 1
> redistribute ospf 1 metric 1000 500 255 1 1500
>
> ####
> #R6#
> ####
> router eigrp 1
> redistribute ospf 1 metric 1000 100 255 1 1500
>
> ####
> #R7#
> ####
>
> router eigrp 1
> variance 6 <--- a variance of 2 should have been enough but I tried higher
> values even the max 128 but without success
> network 192.168.11.4 0.0.0.3
> network 192.168.100.0
> network 200.0.0.7 0.0.0.0
> no auto-summary
>
> R7(config-router)#do sh ip protocol
> Routing Protocol is "eigrp 1"
> Outgoing update filter list for all interfaces is not set
> Incoming update filter list for all interfaces is not set
> Default networks flagged in outgoing updates
> Default networks accepted from incoming updates
> EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
> EIGRP maximum hopcount 100
> EIGRP maximum metric variance 6
> Redistributing: eigrp 1
> EIGRP NSF-aware route hold timer is 240s
> Automatic network summarization is not in effect
> Maximum path: 4
> Routing for Networks:
> 192.168.11.4/30
> 192.168.100.0
> 200.0.0.7/32
> Routing Information Sources:
> Gateway Distance Last Update
> 192.168.100.5 90 00:22:32
> 192.168.100.6 90 00:22:32
> 192.168.11.6 90 00:23:48
> Distance: internal 90 external 170
>
> When advertised only from R5:
>
> R7(config-router)#do sh ip route 200.0.0.4
> Routing entry for 200.0.0.4/32
> Known via "eigrp 1", distance 170, metric 2690560
> Tag 200, type external
> Redistributing via eigrp 1
> Last update from 192.168.100.5 on FastEthernet0/0, 00:00:16 ago
> Routing Descriptor Blocks:
> * 192.168.100.5, from 192.168.100.5, 00:00:16 ago, via FastEthernet0/0
> Route metric is 2690560, traffic share count is 1
> Total delay is 5100 microseconds, minimum bandwidth is 1000 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 1
> Route tag 200
>
> When advertised from R6 and R5
>
> Routing entry for 200.0.0.4/32
> Known via "eigrp 1", distance 170, metric 2588160
> Tag 200, type external
> Redistributing via eigrp 1
> Last update from 192.168.100.6 on FastEthernet0/0, 00:00:01 ago
> Routing Descriptor Blocks:
> * 192.168.100.6, from 192.168.100.6, 00:00:01 ago, via FastEthernet0/0
> Route metric is 2588160, traffic share count is 1
> Total delay is 1100 microseconds, minimum bandwidth is 1000 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 1
> Route tag 200
>
>
> The only way I managed to have both routes into R7 is when having the same
> redistribute metrics on R5 and R6, but of course that was not the idea of
> this lab. I also try to clear my neighbors a few times but I always got the
> same result
>
> I'm probably missing something but I can't figure it out. If you have any
> idea that could help me, that would be great.
>
> Nicolas
>
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-- Ivan
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