On 2023/4/20 00:00, James Knott wrote:
On 2023-04-19 11:50, Nohk Two wrote:
I'm not sure whether I understand your words correctly. Is that bad idea for my case that to enable the IPv6 on both routers ? Because they have different IPv6 prefixes. But they are the same ISP.
I thought that IPv6-address-A must go through router-A to reach the internet and IPv6-address-B must go through router-B to reach the internet. Maybe I'm wrong.
Large organizations, instead of using an ISP, will arrange for their own autonomous system, where they have their own block of addresses. They can then arrange for more than one connection to the Internet, perhaps through 2 telecoms. They then use a routing protocol, such as OSPF or BGP to advertise their network to the world, which enables routing to them. In this situation, they could have a primary connection, with higher priority and a secondary connection with lower priority. There are 3 priority levels available. Then, if the primary connection fails, the secondary one will be used.
If you are using 2 ISPs, each with their own addresses, then you will have the situation you describe, with 2 addresses.
I got it now. I learned many today. Thank you very much !!