See inline
>From: "Howard C. Berkowitz" >Reply-To: "Howard C. Berkowitz" >To: [EMAIL PROTECTED] >Subject: Re: (correction) Method and Process Scenario 5: OSPF [7:42139] >Date: Sun, 21 Apr 2002 09:08:21 -0400 > > >You can originate a 0.0.0.0 route from each of the ISP connected routers. > >Ideally, then each router on your internal network that receives both > >0.0.0.0 routes from both originating routers will route traffic to the > >internet based on the the 0.0.0.0 route with the best metric. > >You're on the right track. But what characteristics must the default >routes have to assure a degree of load sharing? (I'm thinking of >something specific to OSPF) NT: On redistribution of the default-route using OSPF's default assigment of "E2", with a standard "metric XX" value at both POP's will allow the both default routes to be equal-cost. Another option here would be to use the "ospf cost" or "bandwidth" configuration commands to balance the links. >What is their effect on load balancing from the provider to you? > > > > >I'm not sure about OSPF, but where I work we have 2 connections to the > >internet at difference POPs, and this is the method we use. Seems to >give > >some load balancing, however, based on the number of users at each >site.... > >i.e. we have twice as many users at one site (which chooses it's closest > >internet connection for exit to the net) as we do at the other, so we >really > >get a lopsided load balance, but it's what we expect. We are soon going >to > >be implementing BGP on the 2 routers that connect to the internet so what >we > >can have inbound redunancy from the internet, but we'll still leave the > >lopsided load balancing in place as to really load balance across our > >internet connections would each bandwidth on our OC-12, which we don't > >want.... > > > >Mike W. > >----- Original Message ----- > >From: "Howard C. Berkowitz" > >Newsgroups: groupstudy.cisco > >Sent: Saturday, April 20, 2002 2:51 PM > >Subject: (correction) Method and Process Scenario 5: OSPF Multihoming > >[7:42092] > > > > > >> Your enterprise runs OSPF internally and only takes default from one > >> ISP, but at multiple POPs. What would this suggest you could do to > >> achieve a degree of load-sharing among the POPs? > >> > >> Assume you do not run BGP. What can you do and what are its >limitations? > >> > >> Don't focus on the configuration commands as what mechanisms will be > >required. _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=42142&t=42139 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
