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 »
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 »
This blog is coming from sunny and humid Jacksonville, Florida. Today, we will look at controlling the RIP routing domain using Offset-Lists and Administrative Distance. We must remember that RIP is a distance-vector routing protocol with no idea what the network topology looks like. With this, we can trick RIP into thinking a network is
Controlling RIP with Offset-Lists and Administrative Distance Read More »
So today, I checked to see if I could schedule the lab, and I was able to. Thinking I couldn’t get the date I had in mind, I searched for it. San Jose had no open seats, but RTP had 5. I just struck gold, and it was meant to be; I registered for the
CCIE Lab is Tentatively Scheduled Read More »
As you may tell by the blog title, I took my CCIE R&S Written test today and did not come out victorious. Without breaking any NDA’s, I just barely failed, which usually would upset me, but I know where my faults are and where I did very well. I also attempted to take a test
EIGRP Feature Summary EIGRP Updates Once routers are adjacent, they can exchange EIGRP update messages, which follow; EIGRP uses Reliable Transport Protocol (RTP) to send multicast EIGRP updates. EIGRP sends updates and waits for a unicast ACK reply from the neighbor the update was sent. If an ASK is not received in the Retransmission Timeout
IP forwarding is how packets go from one side of the network to the other. It is also known as IP routing. So we can have a base understanding, let’s look at the diagram below. How does the R3 know how to forward the telnet packet to R1? Fast Switching and Cisco Express Forwarding (CEF)
CCIE Notes: IP Forwarding Basics Read More »
When dealing with IP services, you deal with service elements of the IP protocol carried on the IP datagram stream. Some of the IP services we are looking at; ARP We are first going to look at ARP. ARP maps IP addresses to MAC addresses. Before a host can send data, it must do an
CCIE Notes: IP Services Read More »