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Class B WAN IP Assignment
Just noticed that out Cox internet WAN IP assignment has been switched to a class B network with an assignment of 255.255.248.0 - which is known to be lower quality than class A. Any particular reason for this? It’s been like this for a few weeks, even after modem resets.
Darkatt
+2 more
Honored Contributor
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Class b vs class a has nothing to do with network quality, it's simply the number of IP addresses in the block. B has fewer than A, I would think B is better due to fewer ip addresses having to be handled by the route.
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Bruce
+4 more
Honored Contributor III
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I believe Cox has always been a Class B. There are fewer than 10 commercial Class A and Cox wouldn't be one.
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mattlqx
New Contributor II
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It's actually a CIDR (Classless Inter Domain Routing) mask. Way back when, classful networks were doled out on the byte boundary, e.g. 255.0.0.0 (Class A), 255.255.0.0 (Class B), 255.255.255.0 (Class C) but as the number of autonomous networks grew on the internet, there was a need to segment those networks further and that's where this comes in.
255.255.248.0 is also known as a /21 (meaning there's 21 bits in the network portion of the address). It contains 8 "Class C" aka /24 subnets.
All this is to say, it's just a larger subnet that Cox has segmented for your particular area or concentrator. It has no bearing on performance aside from being in a larger broadcast domain (but broadcasts are probably restricted in someway on the network between devices anyway).
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