Bes4dmin
asked on
Subnet a subnet
We have a MPLS network our ISP provides us with. It is a /20 network.
Now we want to have several vlans but we don't want to tell our ISP every time we need a vlan so we want to create all our vlans on our Layer 3 switch.
Our ISP tells me they will on their router point the entire /20 network to our Layer 3 switch. And so we can subnet the /20 network the into the subnets we like.
So I guess as long as I subnet using /21 /22 /23 /24 this is possible?
Now we want to have several vlans but we don't want to tell our ISP every time we need a vlan so we want to create all our vlans on our Layer 3 switch.
Our ISP tells me they will on their router point the entire /20 network to our Layer 3 switch. And so we can subnet the /20 network the into the subnets we like.
So I guess as long as I subnet using /21 /22 /23 /24 this is possible?
ASKER
we have six MPLS locations and each one of them have a /20 address. E.g one site has 172.16.80.0/20 and the other has 172.16.96.0/20
So every site can take after us then and start subneting. :-)
So every site can take after us then and start subneting. :-)
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ASKER
Thank you! This is topclass educating answer and I will have it in my Q&A
Thanks for the kind words
All the best
All the best
Now if you have 8 MPLS locations and the /20 is already chopped up between all locations that is a different story. But it sounds like they are routing a /20 down a single network connection to a single location.