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We should stop selling /24s and only move /23+

Networking by pdxltd 7 replies 659 views
9 #1

Grabs popcorn 🍿

#2

My nephew set this up and he says we need more internet box numbers for the new location but I called COX and they said they dont sell those anymore so now I am looking at this thread and I dont understand why we cant just buy the small one

My nephew says we have a /24 already from InterServer and I said is that the RAM or the storage and he laughed at me

#3

This thread has been flagged for review due to rapid off-topic divergence. To clarify: no policy changes are imminent. The original argument — that /24 fragmentation accelerates RIB/FIB pressure — has technical merit at the global routing table level. Operational reality for small networks differs.

Current state: approximately 935,000 IPv4 prefixes in the global table. /24s constitute roughly 38% of entries but cover under 4% of address space. The efficiency argument is valid. The accessibility argument is equally valid.

Please keep discussion substantive. Off-topic anecdotes about family IT arrangements belong in the offtopic section.

— Admin

sudo make me a sandwich
#4

The real problem is everyone wants to be their own as now and announce everything and the filters are so loose that we get these deaggregated messes and nobody wants to aggregate because what if they need to move a slice later and the whole point of having independent space is independence so of course people want the smallest chunk they can afford and I say this as someone who bought a /24 last year from RackNerd marketplace for my home lab yes my home lab I am part of the problem

9 #5
OwnerSeeker said:
I dont understand why we cant just buy the small one

I feel you, I really do. Have you tried explaining to a customer that their perfectly functional /24 is now "economically irresponsible"? They paid for it. It routes. Their business depends on it. "Dumb" questions about RAM vs storage happen because we gatekeep the vocabulary, not because people are stupid.

The middle ground some ISPs use: accept /24 from multihomed customers only, /23+ from single-homed. Rewards redundancy without punishing the smallest operators. Not perfect, but operational reality beats routing table purity.

#6

Elena has four /24s and elena is not giving them up and elena runs multihomedng so there and if anyone says elena is part of the problem elena will announce them as twelve /32s out of spite

#7

Back in my day we had a class B and we aggregated properly and the routing table fit in 640K of RAM on a VAX and we liked it

Now its someone elses computer and twelve different SDN controllers and systemd managing your BGP sessions and you wonder why the table grows

42U and still growing
#8

640K was enough

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