Can the Cisco Catalyst 9600 Really Replace the Catalyst 6000 Series?
If you have worked in networking and with Cisco equipment, you have probably heard of the Cisco 6500 Series switches. Myself, I have worked with them pretty regularly as well as other Catalyst 6000...
Cisco 3850 – High CPU Usage (fed and iosd processes)
Recently, out of nowhere, I had a 3850 stack that spiked in terms of CPU usage. This particular stack had no recent changes in configuration and had been up and running for around 20...
LACP Port-Channel Member Ports Suspended – %EC-5-L3DONTBNDL2
Recently ran into this issue where a switch rebooted and when it finished reloading, one of the member ports would not come online. The port was stuck in a suspended state. When this occurred,...
Cisco 4500 High CPU – Cat4k Mgmt LoPri
This issue was first noticed during a normal check of the switch while another task was being performed. Ping times to the switch's management interface were higher than expected and "sh proc cpu sort"...
Cisco Stack – Changing the Switch Stack Member Number
Sometimes you may find yourself needing to change a Cisco switch stack member number in a stack setup. This is not the most common of things that you will do on a daily basis...
CCNP Switch – Lab 6 – Packet Tracer
This is a pretty straight forward lab that I was asked about. It goes over using both ISL and Dot1q trucks in a network while sharing Vlans with VTP. I chose to knock this...
Latency Issues – IP Redirects
Sometimes, you may run into a situation where traffic enters a routed interface and then per the routing table, exits the same interface. For instance, take a look at the topology below:
In that topology...