OSPF WAN multiple area 0

[udo.konstantin]

Hi all,

I'm currently designing for a customer a new MAN. There are two different Layer 2 domaines as the MAN backbone (area 0) from the provider.

My question:

Is it a good practice to configure each of the l2 domaines with a subnet and connect these one to the site ABRs.( currently two routers/layer3 switch)

This means the ospf area 0 have two ip subnets !

Thanks

Udo

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[gogo1982bl]

Also, I have a multiarea OSPF network with two IP subnets in area 0. Because of subnets have different bandwidth, one of subnets is a primary link and another subnet is a backup.

It's a good practice and it's reliability fault-tolerant design.

In your case, if two links have same bandwidth, you can use both likns simultaneously (equal load balance).

BR,

Ognjen

[udo.konstantin]

Hi Ognjen,

Thanks for this information.

There are two equal bandwidth links. Then I can the traffic load-balance...

Regards

Udo

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