On Thu, 20 Jul 2000, Dale Cantrell wrote:
> Hi all,
> I was looking in Caslows book, "BRS" for some unequal load balancing in
> OSPF, and found this. Does redistrubution and administrative distance have
> something to do with this? It states, "The different values of a routing
> protocol's administrative distance can create an ideal environment for
> routing loops formation". Or am I way off again?
The administrative distance comes into play when you have multiple routes
to a destination via different routing protocols, such as a route to
192.168.1.0/24 via ripv2, and a route to 192.168.1.0/24 via
EIGRP........which should the router take? It uses the administrative
distance to decide which protocol is preferred. It will not multipath
using this though, it just picks one.
brian
> Thanks,
> Dale
>
> ----Original Message Follows----
> From: "Edward Solomon" <[EMAIL PROTECTED]>
> Reply-To: "Edward Solomon" <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Subject: Re: unequal cost load balance using OSPF
> Date: Thu, 20 Jul 2000 13:35:10 -0400
>
> "Paulo Roque" <[EMAIL PROTECTED]> wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> >
> >
> > How can I configure unequal cost load balance using OSPF?
> > I have configured equal cost load balance and it is working fine. But,
> > when I try to modify the cost of any link, the load balance stop
> > working. What is wrong?
>
> Unequal cost load-balancing is only available using IGRP and E-IGRP due to
> the metric variance capability. OSPF has no means of allowing this as the
> protocol is only able to support equal cost load-balancing, which goes by
> the name of Equal Cost Multipath in the world of OSPF. Cisco also supports
> this using RIP, although this is a proprietary enhancement. OSPF has direct,
> standards-based support for this, but not for unequal cost routing.
>
> --
>
> Edward Solomon
> CCNA, CCSI
> Senior I/T Specialist
> Networking Solutions
> IBM Canada Ltd. - Learning Services
> Tel.: (905) 316-3241 Fax: (905) 316-3101
> E-mail: [EMAIL PROTECTED]
> Internet: http://www.can.ibm.com/services/learning/net_internet.html
>
>
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-----------------------------------------------------
Brian Feeny, CCNA [EMAIL PROTECTED]
318-222-2638 x 109 http://www.shreve.net/~signal
Network Administrator ShreveNet Inc. (ASN 11881)
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