Unclear exactly what you're asking. If you're asking how a route is actually stored I suspect Cisco would consider that proprietary information. If you asking logically how it's stored, we could get into a discussion of IP route statements, dynamic routing protocols, the RIB, the FIB, different kinds of caches, CEF, L3 switch tables, etc.
Think of it this way ... You have a mobile phone, right? Your mobile phone has a phonebook or a contacts book right? So think like this ... You met someone at work. You swap work number (for work purposes, of course). Where do you store it? Your mobile's phone book app, right? But wait ... you need their address too. So you add that into the contact's details. That contact is about to "retire" from work and he/she is throwing a big shindig. It'll be held at his/her large estate. Out in boondocks. Wait ... You can use the Google map app to drive you there, right? Google map plots the course, you drive. You still there? Anyway, Google sees several road congestions ahead. Google maps re-calculate the path to take you around the congestion. Oh wait ... Toll road ahead. You instruct Google to avoid toll road. Google recalculates again. Do you want the shortest path (quickest and default) or do you want the scenic route (longest time, manual override of Google's shortest path)? ... In the end, you arrived. Does this make any sense now?
In the last year, we’ve seen substantial changes in how enterprises conduct business. When the pandemic hit, it exposed gaps in business continuity plans, and it showcased the need to quickly deploy and remotely manage secure connections.
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