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Webcast-Catalyst9k
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OSPF domain-id domain-tag

OSPF domain-id domain-tag

What the aformentioned commands are for in OSPF? I noticed these under "router ospf" on 12.1.2T when I was doing some configuration

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Anonymous
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Re: OSPF domain-id domain-tag

This is used for MPLS VPN. In short, domain-id is used to identify if the 2 VPN sites are part of the same domain. In this case you will inject (type 1-2-3) as type 3. Otherwise if the domain_ids are different you will inject the received route as Type 5.

Domain_tag is used to prevent routing loop when you have more than one process.

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