Re: So am I just excitable?

[Nick Hilliard via NANOG <nanog () lists nanog org>]

michael brooks - ESC via NANOG wrote on 29/08/2025 20:42:
> I have been watching the "Weekly Global IPv4 Routing Table Report" for a
> while now, and have been itching to see the *BGP routing table entries
> examined line* hit 1M. Now, perhaps I am naive, I am assuming that line
> correlates to the actual number of routing table entries, true?
>
> Am I the only one a bit excited to see this? Is this a non-event?

not a non-event. There's almost certainly kit still in deployment which 
has forwarding table capacity to handle 2^20 = 1048576 entries. 
Typically once you exceed these limits on a hardware platform, you lose 
synchronisation between rib and fib, and end up with non-deterministic 
routing / unexpected blackholing. Add in even a medium sized internal 
routing table and a bunch of l3vpns, and the limit will be reached even 
sooner on these platforms. So yeah, this will be an issue for some 
operators.

Nick
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