“Because it may be desirable to reserve one or more link numbers for instrumentation purposes, and because 256 link numbers are many more than are needed, we suggest that no link number over 63 be used.”
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What's being referred to here? "Link numbers"? I have a firm understanding of TCP/IP but can you help me out?
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This predates TCP/IP by about 650 RFCs and half a decade, so I’m not 100% sure :) My understanding is it’s the physical endpoints, so probably analogous to network interfaces of today
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Replying to @stilkov @jogehrs
After some more reading, “link” seems to be a synonym for “connection”, but I’m still not sure.

Apr 16, 2021 · 10:15 PM UTC
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