So blogging world, it has been a while since my last post. Since my last post, I paid RTP another visit and did not leave with the prize; although my scores significantly increased, it still was not enough to get that coveted 5-digit number. Today, we will look at the lock and key access-lists and […]
Lock and Key Access-lists Read More »
During my lab time last night, I did a bunch of IPv6 transitional labs that I will be showcasing on my blog in the coming days. The first of these will be IPv6 NAT-PT. What NAT-PT accomplishes is it allows for bi-directional connectivity between IPv4 and IPv6 domains during an IPv4 to IPv6 transition. Our
In my opinion, anyone in networking needs to understand precisely how the TCP 3-way handshake works. The other day, I posted an oddball network joke on my Facebook that went like this. A TCP packet walks into a bar and says “I want a beer”. The bartender says “you want a beer?” The TCP packet
So we forgot how the handshake works.. Read More »
BGP allows you to distribute traffic over paths that have different bandwidth. This is different from the unequal cost load balancing that EIGRP can perform, as it is not based on the route’s metric. Instead, it is based on a calculation of your neighbor’s link bandwidth that is configured to use this feature. Let’s take
BGP DMZ Link Bandwidth Read More »
Wow, it’s been a while, blogging universe, but I am back with a topic that has eluded me for a long time, and it seems like I was overthinking it as usual. EIGRP is the only protocol that can do unequal cost load balancing; you can have two paths with two different costs, and EIGRP
Unequal Cost Load-Balancing in EIGRP Read More »
Well, I sat the CCIE Lab in RTP on 12/12/12, and let’s leave it at that. I will not go into the specifics of the test, nor will I go into how it is delivered or any variable like that. I will, however, say I got to RTP at 6:30; the test started at 7:20
CCIE Lab 1, Mike 0 Read More »
2 weeks ago, I was at Narbik Kocharian’s 5-day Bootcamp in RTP, NC. Before deciding to go to Narbiks Bootcamp, believe me, I did my homework. I spoke to co-workers, other CCIE’s, and people currently pursuing their CCIE. I will be honest; only 1 of them suggested Narbik’s Bootcamp. Now I had run across his
Narbik’s 5-Day CCIE R&S Lab Bootcamp Review Read More »
Well, Cisco officially took their payment for my lab on 12.12.12 It is now time to start going crazy!
Our last post looked at Q-in-Q tunneling using one port, but what if you had to extend an EtherChannel from one data center to the other? We can also use Q-in-Q tunneling with EtherChannel. The train of thought is similar to how we did just a straight Q-in-Q tunnel, but now, with EtherChannel, we need
802.1 Q-in-Q Tunneling using Etherchannels Read More »
802.1 Q-in-Q tunneling is a technique that can extend a VLAN from one data center to another without AToM or VPLS. Essentially, Q-in-Q tunneling adds another .1q tag to your packet as it traverses the Service Providers network. This keeps your traffic segregated from any other company, following the same principle of how VLANs segregate
802.1 Q-in-Q Tunneling Read More »