PPPoE: What you need to know for exam day, no fluff just straight facts, NEED TO KNOW 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!!

Failed first Route attempt, not due to content here being incorrect, but some Cisco gotchas and the timer beat me up!

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!

IPv6: Tunnel type review, links to IPv6 address identification, migration, and GRE / DMVPN that I highly encourage you to review!

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!

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!!

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 172.12.15.5 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!!

Keith Bogarts (INE) Comparison chart of how Distribute-List’s work between different protocols!

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!

BGP Filtering / Authentication / BGP Peer group notes for exam day!

No topology for this particular post, just some quick notes on BGP filtering which probably won't be a huge topic on ROUTE as it's more a Service Provider So here we go. BGP Filtering can be done on any router, there are no limitations like in OSPF where filtering is done on specific router types … Continue reading BGP Filtering / Authentication / BGP Peer group notes for exam day!

Quick notes on IP CEF and the Adjancency Table for exam day!

No Topology needed for this one, just wanted to jot some quick notes from a video I'm reviewing on the subject. Before getting into what CEF and AT is all about, I feel its important this is required to be on and working for uRPF (Unicast Reverse Path Forwarding). CEF is derived from the IP … Continue reading Quick notes on IP CEF and the Adjancency Table for exam day!

Netflow : Heavier ROUTE config on top half, light weight config for real world at the bottom, some comparison of v5 to v9!

I want to first say the top half of this will be the heavy duty CCNP ROUTE details needed for the exam, I'll try to fill in the differences as much as I can in the middle, and at the bottom is a real world way for actual network admins to configure and view Netflow … Continue reading Netflow : Heavier ROUTE config on top half, light weight config for real world at the bottom, some comparison of v5 to v9!

PPPoE: PPP Layer 2 Encapsulation Over Ethernet, Phases of connection setup explained, along with Terminology!

If needed I'll just use the IP SLA Topology I configured for an demonstration purposes, but wanted to touch on maybe some CCNA topics of encapsulation of Ethernet interfaces, as well as PPPoE as the exam will ask some questions about it. One interesting thing that I found when looking at my interfaces, the default … Continue reading PPPoE: PPP Layer 2 Encapsulation Over Ethernet, Phases of connection setup explained, along with Terminology!

IP SLA configuration, verification, “object tracking” configured and explained, quite an extensive subject and read so brace yourself!

IP SLA explanation and examples of when to use it An IP SLA (Service Level Agreement) is an agreement between the Service Provider and (you) the customer, that you will get an agreed upon level of uptime / bandwidth for your money, and IP SLA configuration on a router is a mechanism to measure and … Continue reading IP SLA configuration, verification, “object tracking” configured and explained, quite an extensive subject and read so brace yourself!

NTP: Demonstrated between 2 routers running IOS 15.x to demonstrate NTPv4 Authentication and other concepts! (Edited with more content 5/20/17)

As I only have two routers in my lab running IOS 15.x, and 12.x is not NTPv4 capable, I've decided to review it between just these two routers to demonstrate new features brought by 15.x code that I couldn't in my previous lab involving the whole WAN Topology. To start there are a quite a … Continue reading NTP: Demonstrated between 2 routers running IOS 15.x to demonstrate NTPv4 Authentication and other concepts! (Edited with more content 5/20/17)

Policy Based Routing / Local Policy Routing, and Route-Map configuration and explanation, review for exam day!

I will be using this Topology not as an OSPF course, but to perform Policy Based Routing (PBR) to influence how traffic travels from R5 to destination network 172.12.23.0, but first we need to review the basics of PBR: PBR effects packets on the Ingress interface it is configured on, not traffic generated by the … Continue reading Policy Based Routing / Local Policy Routing, and Route-Map configuration and explanation, review for exam day!

OSPF: Type 4 LSA’s, who creates them, why they create them, a relatively shorter post for once!

Apologies for how terrible the Topology is, I took an existing picture and put some purple arrows leading off the ABR's, indicating that this is actually where Type 4 LSA's are created. Now ASBR's create Type 5 LSA's which of course are External / Redistributed routes which are shared throughout the entire routing domain across … Continue reading OSPF: Type 4 LSA’s, who creates them, why they create them, a relatively shorter post for once!

OSPF: Important details regarding Summarization and Default Routes for exam day, it’s a long but worthwhile read!

OSPF Summarization is done only on ABR and ASBR routers in your OSPF domain, and use two completely different commands, but what if a router is an ABR and an ASBR? For example, did you know that using the command "default-information originate ..." you are telling the router to create a Type 5 LSA to … Continue reading OSPF: Important details regarding Summarization and Default Routes for exam day, it’s a long but worthwhile read!

OSPF: Route filtering between Areas (Inter-Area) configured and explained!

For those who have forgotten how LSA's work between Area's, let us refresh your memory: Type 1 and 2 LSA's live within their own Areas to create the SPF Tree ABR's extract the Network / Subnet Mask information to create a Type 3 LSA which it then floods into the other Area (Summary LSA in … Continue reading OSPF: Route filtering between Areas (Inter-Area) configured and explained!