Problem in Load Balanceing........!

Unanswered Question
Mar 23rd, 2007

We are using SDM link between to router.

COnfig on router 1

====================

ip cef

inte gig0/1

ip ADDRESS 1.1.1.1 25.0.0.0

ip load shareing per-packet

no ip proxy-arp

no ip mroute-cache

no autonegotiation

load-interval 30

dulpex full

speed 100

media type RJ45

inte gig0/0

ip ADDRESS 2.2.2.1 25.0.0.0

ip load shareing per-packet

no ip proxy-arp

no ip mroute-cache

no autonegotiation

load-interval 30

dulpex full

speed 100

media type RJ45

ip route 172.16.2.0 255.255.255.0 1.1.1.2

ip route 172.16.2.0 255.255.255.0 2.2.2.2

===================

COnfig on router2

===================

ip cef

inte gig0/1

ip ADDRESS 1.1.1.2 25.0.0.0

ip load shareing per-packet

no ip proxy-arp

no ip mroute-cache

no autonegotiation

load-interval 30

dulpex full

speed 100

media type RJ45

inte gig0/0

ip ADDRESS 2.2.2.2 25.0.0.0

ip load shareing per-packet

no ip proxy-arp

no ip mroute-cache

no autonegotiation

load-interval 30

dulpex full

speed 100

media type RJ45

ip route 172.16.1.0 255.255.255.0 1.1.1.1

ip route 172.16.1.0 255.255.255.0 2.2.2.1

Now with this config...

When i m sending 100 packet from HOST A to HOST B then as per me 50 should go on one link and another 50 should go on another link.

BUT here only 20 packet will go on one link and another 20 are going on another link........Due to this to go 100 packet from HOST A to HOST B i m getting

latencey............i.e. i m geting low thoughput.

If i remove one link then i m geting 100% thoughput on the remained link.

PLease let me know where is root cause of problem ?If u are haveing any alternate solutions for same (to load balance )let me know.

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I have this problem too.
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spremkumar Mon, 03/26/2007 - 01:48

Hi Ganpat

Make use of /30 subnet on your interfaces instead of using the current one.

Also in the config posted the mask is not mentioned properly if its the exact config taken out from your router then make sure you try reconfiguring with the above said /30 subnets.

once you are done with changing the mask check for packet loss.

Once you are done with the necessary testing and still getting loss then redefine ip route statement defining the outgoing interface followed by the next hop ip..

regds

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