From: Victor Cappuccio (cvictor@protokolgroup.com)
Date: Sat Apr 22 2006 - 01:22:41 GMT-3
I found the answer metric = BW + DLY, where the Bw(i) is the min bw and
the Dly(i) is the sum of delay
I had it in from of my eyes
Rack1R1#$rp topology 192.168.1.0 255.255.255.0 | in
(from|bandwidth|delay)
164.1.12.2 (Serial0/0), from 164.1.12.2, Send flag is 0x0
*Minimum bandwidth is 256 Kbit*
Total delay is 25100 microseconds
164.1.13.3 (Serial0/1), from 164.1.13.3, Send flag is 0x0
*Minimum bandwidth is 256 Kbit*
Total delay is 45100 microseconds
http://www.cisco.com/warp/public/103/eigrp-toc.html
Sorry for the spam folks
Victor Cappuccio escribis:
> Guys
>
> Im trying to understand the command traffic-share in EIGRP but, I
> think I came to the conclusion that EIGRP by default uses balanced
> unequal load sharing using the metric to determine how many packets
> are sent to which interface
>
> Please could anyone provide more detailed information on how to modify
> the DLY when you are not allowed to modify the bandwidth just to get
> certain ration let say 5:1?
>
> Thanks
> Victor.
>
>
> Rack1R1#show ip route 192.168.1.0
> Routing entry for 192.168.1.0/24
> Known via "eigrp 100", distance 90, metric 10642432, type internal
> Redistributing via eigrp 100
> Last update from 164.1.13.3 on Serial0/1, 00:00:12 ago
> Routing Descriptor Blocks:
> * 164.1.12.2, from 164.1.12.2, 00:00:12 ago, via Serial0/0
> Route metric is 10642432, traffic share count is 240
> Total delay is 25100 microseconds, minimum bandwidth is 256 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 2
> 164.1.13.3, from 164.1.13.3, 00:00:12 ago, via Serial0/1
> Route metric is 11154432, traffic share count is 229
> Total delay is 45100 microseconds, minimum bandwidth is 256 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 3
>
> Rack1R1#conf te
> Enter configuration commands, one per line. End with CNTL/Z.
> Rack1R1(config)#router eigrp 100
> Rack1R1(config-router)#traffic-share ?
> balanced Share inversely proportional to metric
> min All traffic shared among min metric paths
>
> Rack1R1(config-router)#traffic-share ba
> Rack1R1(config-router)#traffic-share balanced ?
> <cr>
>
> Rack1R1(config-router)#traffic-share balanced
> Rack1R1(config-router)#do crt
> Rack1R1(config-router)#do show ip route 192.168.1.0
> Routing entry for 192.168.1.0/24
> Known via "eigrp 100", distance 90, metric 10642432, type internal
> Redistributing via eigrp 100
> Last update from 164.1.13.3 on Serial0/1, 00:00:08 ago
> Routing Descriptor Blocks:
> * 164.1.12.2, from 164.1.12.2, 00:00:08 ago, via Serial0/0
> Route metric is 10642432, traffic share count is 240
> Total delay is 25100 microseconds, minimum bandwidth is 256 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 2
> 164.1.13.3, from 164.1.13.3, 00:00:08 ago, via Serial0/1
> Route metric is 11154432, traffic share count is 229
> Total delay is 45100 microseconds, minimum bandwidth is 256 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 3
>
> Rack1R1(config-router)#traffic-share ?
> balanced Share inversely proportional to metric
> min All traffic shared among min metric paths
>
> Rack1R1(config-router)#traffic-share min ?
> across-interfaces Use different interfaces for equal-cost paths
>
> Rack1R1(config-router)#traffic-share min ac
> Rack1R1(config-router)#traffic-share min across-interfaces ?
> <cr>
>
> Rack1R1(config-router)#traffic-share min across-interfaces
> Rack1R1(config-router)#do show ip route 192.168.1.0
> *Mar 1 10:41:31.837: %FIB-4-UNEQUAL: Range of unequal path weightings
> too large for prefix 10.6.6.0/24. Some available path.
> Rack1R1(config-router)#do crt
> Rack1R1(config-router)#traffic-share min across-interfaces
> *Mar 1 10:41:41.877: %FIB-4-UNEQUAL: Range of unequal path weightings
> too large for prefix 10.6.6.0/24. Some available path.
> Rack1R1(config-router)#do show ip route 192.168.1.0
> Routing entry for 192.168.1.0/24
> Known via "eigrp 100", distance 90, metric 10642432, type internal
> Redistributing via eigrp 100
> Last update from 164.1.13.3 on Serial0/1, 00:00:05 ago
> Routing Descriptor Blocks:
> * 164.1.12.2, from 164.1.12.2, 00:00:05 ago, via Serial0/0
> Route metric is 10642432, traffic share count is 1
> Total delay is 25100 microseconds, minimum bandwidth is 256 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 2
> 164.1.13.3, from 164.1.13.3, 00:00:05 ago, via Serial0/1
> Route metric is 11154432, traffic share count is 0
> Total delay is 45100 microseconds, minimum bandwidth is 256 Kbit
> Reliability 255/255, minimum MTU 1500 bytes
> Loading 1/255, Hops 3
>
> Rack1R1(config-router)#traffic-share b
> Rack1R1(config-router)#traffic-share balanced
> Rack1R1(config-router)#^Z
> Rack1R1#
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