Hello All,Been working at this for hours and I'm not sure why the 20.0.0.0 network is not always being advertised to Router12 and Router13. On occasion when I run "show ip route" on Router12 and Router13 I see the 20.0.0.0 network, but most times it ...

Hello All, I'm a little confused about OSPF's requirement for the networks to be connected to Area 0 in some capacity. I was trying to create an OSPF network with a layer of obfuscation that would make an attacker have to try to discover/guess what A...

So I'm not sure if this involves a nuance in Packet Tracer or if there's something I'm doing wrong -- one thing is for certain, though I don't yet totally understand the network command although I will have a question on that later. I want the neighb...

I just started taking CCNA Labs with David Bombal on Udemy and really, it should come with a disclaimer which says not for total beginners. In the Topology:PC1 ---------- SW1 ------------ R1 ------------ PC2 In one of his labs where we do a Packet Tr...