We ran into an issue where a Cisco 3850 switch (3850-12X48U) lost the ability to use the its C3850-NM-8-10G network module after a firmware upgrade. The module had been working for a few years prior to the upgrade. We upgraded from 16.03.07 to 16.12.05 and upon...
Packet Capture on a Remote Cisco Device Typically when I need to do a packet capture on a remote Cisco IOS/IOS-XE device, I use RSPAN to mirror that traffic someplace where a VM can receive the capture. This week I learned a trick that allows much more flexibility!...
This post is part three to Why We Love Continuing Education and Certifications and How I Study for IT Certification Exams There’s a genre of movie that’s usually predictable, sometimes corny, but always endearing. These are the movies where a group of...
This post is part 1 in a three part series which includes How I Study for IT Certification Exams and What Certs Should My IT Team Have? My First IT Certification When I graduated from UNC Asheville in the spring of 2003 with a Computer Science degree, I had assumed...
We changed a customer from PRI to SIP trunk and after the change, the Exchange UM stopped working for calls coming in from the outside. We found the following error in the logs: %VOICE_IEC-3-GW: CCAPI: Internal Error (Software Error): IEC=1.1.180.1.13.112 on callID...
On the pre 4000 series ISRs you would use the regular Cisco escape sequence to exit a service module — CTRL-SHIFT-6 followed by X. In the 44xx and 43xx series routers the switch modules do not respond to the regular escape sequence from the console. Instead,...
