I will wrap this up with a look at OSPF and BGP Redistribution, above is a Topology I labbed during ROUTE studies of the BGP MED concept, this is to demonstrate visually the difference of iBGP vs eBGP being the AS that BGP Routers reside in. Troubleshooting Redistribution into OSPF and OSPFv3 OSPF is very … Continue reading TSHOOT – Redistribution Part 3 – OSPF, OSPFv3, and BGP Redistribution review and troubleshooting!
Being that it has been quite awhile since my ROUTE, this will contain a lot of core / foundation concepts, and tie them into troubleshooting as I go. That said, here we go! OSPFv2 (IPv4) review and troubleshooting OSPF is configured with a Process # that is locally significant only "router ospf #" and networks … Continue reading TSHOOT – OSPFv2, OPSv3, OSPF Address-Families, huge LSA / LSDB review, and troubleshooting everything OSPF!
I was going to bring R1 in on this with a Point-to-Point Serial cable, to make the Topology look a little less pathetic than the usual all out routers everywhere model, however for these topics I only need these 3 - Though I may need to for further IPv6 studies. So far I've confirmed the … Continue reading IPv6 Redistribution, Stub and Total Stub configuration, and some gotchas to watch for on exam day!
I'm thinking it has to be something on that frame switch so we'll dig into the guts of that, but I start off with R5 (not in this Topology in which you will see why), just to get SOMETHING going for R1. As you may not know from previous labs, R5 is attached to R1 … Continue reading Part 4: Found an IOS bug on R5, and found why IPv6 doesn’t work over my NBMA, so I won’t be able to lab it 😦
So through begging all over on Cisco support community and other tech forums, someone had pointed out that my running config appears to be missing the frame map statements, and I just facepalmed so hard I might have just smacked myself. Once more, if you use templates that setup "base configs" like ip addressing and … Continue reading Part 3: Fixing the “ATTEMPT/DROTHER” issue, but still failing at the end
So now we have R1 left to add to our OSPFv3 Circus, so lets get to work configuring. A couple thing to mention, that OSPFv3 still needs neighbor statements, but I don't quite remember where its config'd or what the syntax is so lets gets started: R1#conf t Enter configuration commands, one per line. End … Continue reading Part 2: IPv6 / OSPFv3 configuration on Hub in NBMA, Hub stuck with neighbors in “ATTEMPT/DROTHER” state
We have a lot to accomplish, but first since I did a "wr er" like a nerd I have to reconfigure all the IP addresses again (as you see in the Topology I changed them to make them a bit more intuitive). One thing I wanted to point out while configuring this whole lab (and … Continue reading Part 1: Configuration of this new Topology in IPv6
So this video I am working on now is regarding point-to-point networks, which I didn't think that if I were going from 2-3 with the SW1 between then it would be an "Ethernet segment" however R3 and R4 are directly connected via Fa0/1 so that would be a point-to-point so I may be re-covering the … Continue reading OSPFv3 PtP networks, adding IPv6 addressing on interfaces, and more IPv6 info / configs in general (good stuff)
As illustrated above, OSPFv3 (OSPF for IPv6) and OSPFv2 (OSPF for IPv4) can co-exist in harmony on one router, as two completely separate processes, without interfering with each others operation (just like our recent VRF discussion). Being that OSPFv3 is configured on an interface by interface basis, it does not use network statements in router-config … Continue reading IPv6 / OSPFv3 configuration and explanation along the way!