From: Victor Cappuccio (victor@ccbootcamp.com)
Date: Thu Feb 15 2007 - 20:20:34 ART
Hi Bit,
BW + DLY, where the Bw(i) is the min bw and the Dly(i) is the sum of
delay
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
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a008009
437d.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
Thanks,
Victor Cappuccio.
Network Learning Inc - A Cisco Sponsored Organization (SO) YES! We take
Cisco Learning credits!
victor@ccbootcamp.com
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
BitGossip
Sent: Thursday, February 15, 2007 1:18 PM
To: Cisco certification
Subject: IEWB4 lab 10: EIGRP is not unequal-cost load-balancing
Importance: Low
Group,
Following S32 of lab10 I got to the point of having a traffic share 5:1,
but
at the end real traffic goes out only from the best path S4/1.
Any idea why?
Thanks,
Luca
router eigrp 100
variance 5
R1#show ip route 164.1.26.0
Routing entry for 164.1.26.0/24
Known via "eigrp 100", distance 90, metric 3026432, type internal
Redistributing via eigrp 100
Last update from 164.1.12.2 on Serial4/0, 00:08:47 ago
Routing Descriptor Blocks:
* 164.1.13.3, from 164.1.13.3, 00:08:47 ago, via Serial4/1
Route metric is 3026432, traffic share count is 5
Total delay is 40100 microseconds, minimum bandwidth is 1280 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
164.1.12.2, from 164.1.12.2, 00:08:47 ago, via Serial4/0
Route metric is 15132160, traffic share count is 1
Total delay is 200480 microseconds, minimum bandwidth is 256 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
R1#clear counters
Clear "show interface" counters on all interfaces [confirm]
R1#
*Feb 15 22:02:18.618: %CLEAR-5-COUNTERS: Clear counter on all interfaces
by
console
Run ping 164.1.26.2 repeat 100
R1#show int s4/0 | i underr
7 packets output, 244 bytes, 0 underruns
R1#show int s4/1 | i underr
118 packets output, 11412 bytes, 0 underruns
This archive was generated by hypermail 2.1.4 : Thu Mar 01 2007 - 07:38:46 ART