CCNP SWITCH

Today I sat for the Cisco CCNP SWITCH exam and passed it, after about 4 months of study. This is the second time I pass a Cisco switching exam, my first one was BCMSN back in 2009. Material I have ... Read More »

According to Cisco documentation, IP SLA Responder is optional for the Cisco IP SLA UDP Echo operation. However, I experienced a different situation in my EVE-NG home lab. Topology I am using the same topology as in Cisco IP SLA ... Read More »

Here is a short article on the configuration of the Cisco IP SLA ICMP Jitter operation. the syntax of the ICMP Jitter operation is: Let us use it to collect measurements between R2 and R4, of this topology. R2(config)#ip sla 1 ... Read More »

Cisco IP SLA delay is an option that facilitates the failover and fallback of links when you have multiple of them. A common complaint among network engineers is that a primary link flaps up and down, and with it flaps ... Read More »

I listed below some helpful Youtube videos that explain the concept of Cisco GLBP.     Read More »

We learn in this blog post how to leverage Cisco IOS IP SLA tracking with PBR. Cisco IP SLA track for PBR: a sample topology I used Eve-NG to generate this network topology. Using PBR to change the path of the ... Read More »

Spanning Tree Root Port Election: How does it work? We said that non-tooy ridges have one Root Port. But how is it chosen? The Root Port is elected by the following criteria: the port that receives the superior BPDU the ... Read More »