Here are the commands that you need to use: (I use it on a everyday basis and it has always worked!)
#ip cef #int s0 #no ip route-cache #no ip mroute-cache #ip load-sharing per-packet #int s1 same commands Clear the counters and the intf. and do a huge ping to an ip beyond the serial network. You will see it balancing almost equally(load and output/input rate) Hope this helps!! >From: "Elijah Savage" >Reply-To: "Elijah Savage" >To: [EMAIL PROTECTED] >Subject: 2 T1 load balancing not working [7:32239] >Date: Wed, 16 Jan 2002 20:42:57 -0500 > >All, > >I had to setup a 2621 to do load balancing over 2 t1's with ospf. I know >ospf does this on a basic simple default setup. So after setting this up >everything seemed to be working great but one link was definately being >used about 80% more than the other. So after doing some reasearch on cco >I realized my problem I had ip route-cache turned on under the interface >on both serial interfaces. According to >http://www.cisco.com/warp/public/105/46.html it works alot better by >turning this off so I did and was getting just about 50/50 load >balancing accross both t1's. But in my quest of always trying to make >the network more efficient I saw at the bottom of that page on the link >above this statement below. > >Newer switching schemes such as Cisco Express Forwarding (CEF) >http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/s >witch_c/xcprt2/xccefc.htm allow you to do per-packet and per-destination >load-balancing more quickly. However, it does imply that you have the >extra resources to deal with maintaining CEF entries and adjacencies. >Refer to this Application Note > for more >information on load-sharing with CEF. >So I went of the info on that URL to setup ip cef on the router and ip >load sharing. But after clearing the counters and doing a show interface >I could see all traffic going accross only one serial interface. I am >using IOS 12.1 and I had ip cef turned on globally and on both >interfaces locally as the doc stated, but only 1 link was being used. > >Any ideas why? > > > > > > > , , > /( )` > \ \__ / | > /- _ `-/ ' > (/\/ \ \ /\ > / / | ` \ > O O ) | > `-^--'` (_.) _ ) / Powered > `.___/` / by > `-----' / OpenBSD > For Late Breaking Tech News and OpenSource HowTO's >http://www.digitalrage.org >-------------------------------------------- _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=32250&t=32239 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
