Configuring just for Area 0 (Hub and Spoke NBMA portion of below net diagram): So I had no issues with the configurations for authentication for OSPF, except when it came to entering the password on the interface, I kept typing "ip ospf authentication ..." when the command is actually "ip ospf message-digest-key 1 md5 CCNP" … Continue reading Configuring OSPF Auth, debug output
This will be brief, as there is not a whole lot to OSPF Authentication, just a few good to know debug / verification commands and a few commands to configure the authentication itself. ***One thing to note before going into the commands to configure the authentication itself, it will always require two commands, one to … Continue reading OSPF Authentication Configuration
I will be using the same lab where I left off before, at least the same logical topology with possibly some loopbacks thrown in there to perform different types of Summarization: The first thing to address with the above topology, is that the External (O E2) routes brought into the OSPF network via Redistribution on … Continue reading OSPF Metric Types (E1, E2) config, OSPF Route Summary
The following is a quick logical topology I whipped up in Paint, leaving out the Loopback info as that would make for a lot of micro-text, this is what will be configured once we go through some Redistribution and Stub Area configuration: To inject routes into OSPF, which then makes the router an ASBR, … Continue reading OSPF Redistribution, Stubs, Total Stubs, NSSAs
This will be another bullet point style post, as I have not fully delved into these LSA types with labs yet. One thing I have noticed, "show ip ospf database" will not give you the LSA type or number just in one of the columns of the output, they will need to be known by … Continue reading OSPF Router and LSA Types
This again will be bullet point facts on Fundamental OSPF concepts, with a taste into Advanced topics, but I will save the Advanced topics for their posts (such as LSA's, Stub Areas, IPv6, etc). This will get me up to speed in Chris Bryants Book so I am where I am at on his video … Continue reading OSPF Fundamentals in a can
That right there is my bundle of Cisco pride and joy! A breakdown of my equipment, and what I use for my topologies: From top device to the bottom: 2509 Access Router w/octal cable 3750v2 - 15.x (SW1) 3750v2 - 15.x (SW2) 3750v2 - 15.x (SW3) 3560 - 12.2 (SW4) 1841 ISR Router (R1) 2621XM … Continue reading RE-Updated Physical lab when 3550 died, may it RIP! Also a word on why using physical labs > virtual if you have the money, and they are CHEAP now adays!