You are the OSPF king, charles :)
Load balancing with ospf happens automatically, assuming the two interfaces
have the same cost.
The fact that they are load balancing per packet or per destination depends
on the switching mechanism on the router.
Last note, if you want a router not to be a DR , set the priority to zero, I
believe the default is one, the decision if both routers have the same
priority will go the router with the highest IP (router ID) address, this is
another good reason to use loopbacks with OSPF.
>From: "Cthulu, CCIE Candidate" <[EMAIL PROTECTED]>
>Reply-To: "Cthulu, CCIE Candidate" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: re: OSPF !!!
>Date: Thu, 15 Jun 2000 16:30:16 +0200
>
>Elias,
>
>I am going to display my awesome lack of OSPF knowledge in public, so
>bear with me:)
>
> The ip ospf cost and ip ospf priority are interface specific commands:
>unless something drastic has happened at Cisco, you can not enter them
>under the ospf process configuration mode as implied here.
>
>Priority only affects DR elections: it has no impact on route
>selection.
>
>Cost is a trickier one, but generally speaking, it does affect route
>selection. If you have two routes to the same destination, you can set
>the cost of one higher than the other, and the lower cost one will be
>preferred (assuming it is up and operational, of course).
>
>OSPF calculates the cost of each interface using the formula of
>interface bandwidth/100Mbps; the resulting number is the cost of the
>interface by default.
>
>
>You could also indirectly set the interface cost by setting the
>bandwidth of the interface higher or lower using the the bandwdith
>command: OSPF will then calculate based on that.
>
>I am not going to get into load balancing between interfaces to the same
>destination because, frankly, it's beyond the scope of my brain. I hope
>the previous info helps even a little bit.
>
>Flames to: [EMAIL PROTECTED]
>
>Charles
>
>
>
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
>Posted At: Wednesday, June 14, 2000 5:59 PM
>Posted To: cisco
>Conversation: OSPF !!!
>Subject: OSPF !!!
>
>
>Hello everyone!
>
>I have a bit of confusion with how to route selection occurs in OSPF by
>icluding the following commands Please shade some light on this
>
>Ok here comes
>
>does cost and priority affects route selection ??
>
>1. router ospf 3
> network 158.13.0.0 0.0.255.255 area 0
> default-information originate
> default-metric 1
> distance 85
> ip ospf cost 10
> ip ospf priority 4
>
>
>2 router ospf 3
> network 158.13.0.0 0.0.255.255 area 0
> default-information originate
> default-metric 1
> distance 85
> ip ospf cost 20
> ip ospf priority 5
>
>Thanks,
>Elias
>
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