This is basically what Cisco does on their routers by default, except it
is based on port type, like T1, Ethernet, fast Ethernet, etc.
On 12/10/2014 1:30 PM, Mike Francis wrote:
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
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
------------------------------------------------------------------------
*From: *"Mike Francis" <[email protected]>
<mailto:[email protected]>
*To: *"Mikrotik Users" <[email protected]>
<mailto:[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
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
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Wireless Networking
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