We do cost based on type of link. 1. (Lowest value possible) for ethernet and fiber type connections. 2. Licensed backhauls, 11Ghz, 18Ghz, 24Ghz (Not technically licensed, But licensed like performance) 7. Fast PTP type Backhauls. Ligowave PTP5N-PRO's. Mimiosa BH's.... AF5. Fast PTP MT links some times 15. Any other standard link, UBNT, Mikrotik..etc.
The above works 98% of the time. Sometimes we have to manually steer the number. Nick Olsen Network Operations (855) FLSPEED x106 ---------------------------------------- From: "Mike Francis" <[email protected]> Sent: Wednesday, December 10, 2014 1:30 PM To: "Mikrotik Users" <[email protected]> Subject: Re: [Mikrotik Users] Setting OSPF Costs We use a simple calc: 1,000,000kb / bandwidth in kb so for a 70mb pipe your cost would be 14. Also depnding on the size of your network you may want to round to the nearest 5 or 10. John Michael Francis II JMF Solutions, Inc Wavefly Technologies Internet - Voip - Cloud 251-517-5069 http://jmfsolutions.net http://wavefly.com On 12/10/2014 12:24 PM, Bryce Duchcherer wrote: Speaking of OSPF link cost. Can anyone share a good rule of thumb for setting cost based on throughput of a link? For example; Let's say "Router A" has a 50Mbps P2P connection to "Router B" and a 70Mbps connection to "Router C" You would set a lower cost to "Router C" since it's a faster link. *Assuming that both links are equally stable and cost is based solely on throughput Rather than setting a cost of let's say 20 to "Router C" and 40 to "Router B" what's a good way to calculate a more accurate cost for the link? Bryce D NETAGO From: [email protected] [mailto:[email protected]] On Behalf Of Mike Francis Sent: Monday, December 8, 2014 19:46 To: Mikrotik Users Subject: Re: [Mikrotik Users] Setting OSPF Costs Instance ID Enables multiple instances of OSPF to be run over a single link. Each protocol instance would be assigned a separate Instance ID; the Instance ID has local subnet significance only. Received packets with an Instance ID not equal to one of the configured OSPF Instance IDs on the receiving interface MUST be discarded. So it sounds to me like you would have to set the instance ID on all routers in the same subnet for each instance. This would allow you to set different costs on an interface for the same subnet on different instances. John Michael Francis II JMF Solutions, Inc Wavefly Technologies Internet - Voip - Cloud 251-517-5069 http://jmfsolutions.net http://wavefly.com On 12/8/2014 8:40 PM, Mike Francis wrote: This is interesting: http://tools.ietf.org/html/draft-ietf-ospf-multi-instance-01 John Michael Francis II JMF Solutions, Inc Wavefly Technologies Internet - Voip - Cloud 251-517-5069 http://jmfsolutions.net http://wavefly.com On 12/8/2014 8:36 PM, Mike Hammett wrote: I have two instances network-wide, one for private management and one for public traffic. That said, the cost seemed to propagate to the dynamic interface. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com ---------------------------------------- From: "Mike Francis" <[email protected]> To: "Mikrotik Users" <[email protected]> Sent: Monday, December 8, 2014 8:34:21 PM Subject: Re: [Mikrotik Users] Setting OSPF Costs Just add the interface and make sure the network is in the correct area. Instance ID has to do with running multiple instances on the same interface which you most likely do not need to do. John Michael Francis II JMF Solutions, Inc Wavefly Technologies Internet - Voip - Cloud 251-517-5069 http://jmfsolutions.net http://wavefly.com On 12/8/2014 8:12 PM, Mike Hammett wrote: So I'm trying to manipulate the OSPF costs on my network. I create an interface (currently they're all dynamic) to specify the cost. It asks for an Instance ID. Nowhere in my instance specifications does it indicate what the instance IDs are. I am running two instances, one public, one private. Okay, let's just load up one of the dynamic entries and see what it has... BOTH PUBLIC AND PRIVATE INSTANCES SAY INSTANCE ID 0. How the hell can that be? There are clearly two instances running by the fact that on the interface screen, the interfaces have the various corresponding instance names, but all on the same instance ID. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users _______________________________________________ Mikrotik-users mailing list [email protected] http://lists.wispa.org/mailman/listinfo/mikrotik-users
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