Wanted to cover this in a non-fancy lab, very straight forward, as this is a very forgettable subject for me as you kind of set it and forget it on real life networks. What IP SLA is and how it can be used to optimize your network Not to be confused with "Tracking Objects" for … Continue reading IP SLA – Covering ENARSI topics of configuring SLA to detect jitter, tracking objects, delay, connectivity issues!
The above Topology has already been configured with its respective IP Addressing / Routing Protocols, all Adjacencies are Up/Up, and we are ready to jump straight into NHRP (Next Hop Resolution Protocol) configuration on the Hub / NHS (Next Hop Server) which will be PHX1 Router in this Topology and then onto the DMVPN Spokes! … Continue reading DMVPN – Huge DMVPN Lab, multi-branch deployment considerations, Phase 1 to Phase 2 DMVPN clearly demonstrated, lots of configuration and verification!
There was some lack of depth in my review of ACL's in general, so wanted to jump on my lab to demonstrate some output and concepts for on the job and the exam room. If you read absolutely nothing else in this post, jump down to the bottom where a chaotic looking IPv6 ACL line … Continue reading TSHOOT – IPv6 ACL configs, quirks, and must know IPv6 subnetting for exam day!
These 3 diagrams have been publicly available for years, I downloaded this TSHOOT Topology off Cisco's official learning forum, post can be viewed here. I doubt this is exactly the Topology used on exam day, it very well could be, however if this is not it the Topology will be something extremely similar to this. … Continue reading TSHOOT – Critical understanding of Cisco Published Topologies, troubleshooting methods, and must knows for exam day!
Some quick notes from labbing tonight that I thought is good to knows for Exam day, this will all be very messy crap with output behaviors, no editing out to make it look nice! ALSO one important note I keep forgetting - It is for PRIVATE VLANS that VTP and neighbors hosting Private VLAN must … Continue reading Quick Takeaways from DHCP Snooping / Dynamic ARP Inspection / VLAN Access-List labbing session and misc tips for Exam Day success!
Taking an easy topic to review tonight, two DHCP Hosts (R1 and R2), along with a DHCP Server connected via L2 EC Bundled Trunks. This is really for my own practice / review, so you can skip this post if you have this nailed down for exam day, otherwise just a quick refresher / light … Continue reading DHCP – A quick review of configuration for Exam Day, just straight forward configs, some tshooting, and real world examples thrown in there for you!
I will start with the basic Fundamentals of how DHCP requests work first here A Client initiates the DHCP Process by sending out a "DHCP Discover" Broadcast packet to the network, to find a DHCP Server that will respond back with a "DHCP Offer" Broadcast packet, the Offer packet containing Usable IP Address / Lease … Continue reading DHCP – Fundamentals, DHCP Pool Config / Verification, Dynamic and Static Bindings, and DHCPv6 explained!
Above is the logical Topology of how I cabled / Trunked the switches, and modes they are in, I'll walk through the changes step by step as I introduce the nuke switch. Advertisements / "Subset Advertisements" and Configuration Revision # Now as previously stated, the highest "Configuration Revision #" in a VTP Domain is considered … Continue reading VTP – Intro to Advertisements and Config Revision #, DEEP DIVE into Cisco “VTP synch issue” and Cisco’s official fixes for it – Important!
Finally after my first two Failed attempts at the ROUTE exam, I have finally FINALLY passed it!!! I have to say I took the first fail as a learning experience, but after some intense brushing up on all topics and failing again, I didn't reschedule a 3rd attempt as I didn't think I wanted to … Continue reading 3 must know tactics to get a “Pass” score on exam day, as can be seen here on my ROUTE exam score printout (finally)! 😀
Going to cut right to the chase here for exam day what you will need to know without a lot of explanation, as I've been reading the white papers for my second attempt this Friday, and there are just some things to know without knowing all the "why." NTPv6 - This does the same function … Continue reading IPV6: Quick straight forward notes on differences in modes for exam day!
This was not covered much at all in my study materials, I am guessing because they were made as the new exam version rolled over, and they hadn't introduced a lot of PPPoE just yet (is my only thought on why this was not covered to the extent it should have been). PPPoE has 2 … Continue reading PPPoE: What you need to know for exam day, no fluff just straight facts, NEED TO KNOW FOR EXAM DAY!!
First and foremost, I think saying that taking the route and failing the first time should be actually fairly standard, unless you use brain dumps or study / lab from CCIE level material (and even then...). That being said, lets get into my thoughts: It has the same old Cisco gotchas, so always compare the … Continue reading Failed first Route attempt, not due to content here being incorrect, but some Cisco gotchas and the timer beat me up!
I know I said no more posts, but IPV6 was begging for some kind of review before exam day so here it is! There are two general ways to route IPv6 packets, those being a fully native end to end IPv6 network from host - across the WAN - to the end host and back, … Continue reading IPv6: Tunnel type review, links to IPv6 address identification, migration, and GRE / DMVPN that I highly encourage you to review!
No Topology again, I know the lack of pictures is boring. A few things I wanted to note about configuring address-family's in BGP: You can either do it as a single IPv4 or IPv6 Peering, which would look something like: router bgp 100 neighbor 18.104.22.168 remote-as 500 neighbor 2005::5/64 remote-as 500 address-family ipv4 … Continue reading Important BGP Address-Family notes, IPv4 and IPv6 behaviors for exam day! Last post before my exam 5/26, see you on the other side!!
One again with Keith Bogarts permission he allowed me to post this up for other who do not have his course (which you should go grab a copy of), to demonstrate the differences of Distribute-List's behaviors between protocols. The list speaks for itself, and if you've learned these and forgotten exactly which protocol does what, … Continue reading Keith Bogarts (INE) Comparison chart of how Distribute-List’s work between different protocols!