In OSPF (Open Shortest Path First), the process ID is a unique identifier assigned to an OSPF routing instance on a router. It is used primarily to distinguish between multiple OSPF processes running on …

I know the difference between OSPF E2 routes and E1 routes. Briefly, for E2 routes it doesn't matter internal costs except when breaking a tie, whereas E1 routes do add internal costs to the metric …

Jul 2, 2023 · Certainly! OSPFv2 and OSPFv3 are both routing protocols used to find the best path for data packets within a network, but they have some key differences. Here’s a comparison: OSPFv2: …

Oct 28, 2025 · As I create OSPF Cheat Sheets for my CCNA students, I thought it could be helpful to share them with you. The Cheat Sheet is composed of 2 parts and can be a great study tool during …

OSPF Not Showing Up With Show IP Route Command Okay, I followed the instructions with my PT labs but for some reason when I run a "show ip route" command on Router 2 and Router 3 the OSPF …

Sep 19, 2025 · OSPF (Open Shortest Path First) configurations The network address, space, and the wildcard mask, which is the inverse of the subnet mask, and then specify the area. Router1 : …

OSPF priority command Hello all, I know there is an interface command "ip ospf priority", but what does "priority X" under "router ospf 1" do?

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•If OSPF router ID needs to be routable, configure a loopback interface with the same IP address and include it under the OSPF process. •If applications like DLSW+, IPSec, etc., require optimal routing, …

I intend to configure access list on the router 2. I have configured the network as shown and wanted to try out its connectivity. From PC3, I can ping router 2 and the loopback address but I cant ping the …