November 7, 2019

Cisco ASA VPN Timeouts

There are two settings I’d like to write about and those vpn-idle-timeout and vpn-session-timeout. You’ll make changes to both for remote access Anyconnect VPNs but for […]
November 7, 2019

Cisco SSH Basic Config

service password-encryption username {NAME} privilege 15 secret {PASSWORD} ip domain-name {DOMAIN} ip ssh version 2 crypto key generate rsa 2048 line vty 0 15 transport input […]
November 6, 2019

Cisco Nexus Show Commands for High CPU Usage

I ran these on our Nexus 7K switches.
November 6, 2019

Adding a new Cisco Fex – Basic Config

fex 101 pinning max-links 1 description "FEX0101" fex 102 pinning max-links 1 description "FEX0102" interface port-channel101 switchport mode fex-fabric fex associate 101 vpc 101 interface port-channel102 […]
June 19, 2019

Cisco Error Disabled Ports

=====Verify port status: show int status show interfaces Gi1/0/1 status
May 19, 2019

Cisco and HP Terminology Differences

I’ve been working with HP Enclosures and Cisco devices a long time now and these always get confusing when trying to explain it to people. I […]
June 18, 2018

Cisco CLI Cable Testing Command

Cisco has a command that can run TDR tests on an interface. A TDR (time-domain reflectometer) is an electronic instrument used to characterize and locate faults […]
June 18, 2018

Cisco LACP Individual State with 3rd Party Devices

I work a lot with other products like HP Dell-Brocade, and EMC. There are times I need to port-channel to them but my ports end up […]
June 18, 2018

Cisco Troubleshooting Interface Issues

In my case I was troubleshooting an interface that had to be 100Mb. But these commands can be used on other interfaces. There are other commands […]
June 18, 2018

Python – Cisco CLI Config Changer

Here’s a script I worked on to help make changes to a Cisco devices via CLI. It’s an easy way to automate simple changes. This script […]
June 12, 2018

Cisco Nexus IOS Upgrade (Disruptive/Non-ISSU)

This will upgrade from 5.1 to 7.3. Unfortunately because the IOS is so far back, you can’t use ISSU.
December 4, 2017

Cisco SNMPv3 Config

Below is a working config:
October 28, 2015

Cisco TACACS+ Configs for ACS (Nexus, ASR_IOS-XE, IOS, ASA, Wireless)

Below are some examples pulled from a working configuration. Enjoy!
November 5, 2014

Cisco CLI Regular Expressions

Some common ones I use: