Ansible is such a powerfull tool that it can be easy to get lost in all the possibilities. Running your "network infrastructure as code" with full configs auto-generated and checked into git is the dream, but we can start simple with automating time-consuming tasks. This post will focus on getting ansible up and running with a playbook to
This is my first post in a series I'm calling Cisco Config Basics. These posts will serve as a reference for anyone new to Cisco, or those of you just looking to compare your current configs. After the full config, I will explain each config item line-by-line.
In a campus network, the User Port has a lot riding on it
Found a great blog post on installing a demo license on the CSR router (http://www.burningnode.com/2016/02/08/the-csr1000v-license-and-the-100kbps/), but I came across one additional (and important step below).
TL;DR - Make sure to accept the end user agreement and SAVE before reloading!
ip-10-128-228-209#reload % Unfortunately EULA is not detected for following feature/features: % security % Please
Enable SCP on the Cisco router:
cisco-csr(config)#ip scp server enable
Copy file from linux server to router with the following syntax:
scp filename email@example.com:flash:/filename
I recently deployed a small IPv6 network to support our developers meeting Apple's IPv6 compatibility requirements (https://developer.apple.com/support/ipv6/). This was a good experience to get my feet wet with IPv6 as we have plans to dual-stack our environment in the coming year. Here are my notes:
Since this is a test/dev network, I decided to
If you need to change the postgres external database for CUCM, there a few steps to follow:
- Change database server name
a. External server setup -> External databases
- Unassign servers and disable persistent chat
a. Messaging -> Group Chat and Persistent Chat
b. Change "Persistant Chat Database Assigntment" to unsassigned
c. Uncheck "Enable Persistant Chat&
On our new ASR I was looking for a command similar to
show interface 1/0/1 transceiver, but that didn't exist. Here are the commands I found relevant to the ASR:
To show transceiver hardware details:
#show hw-module interface g0/0/1 transceiver idprom
To show transceiver temp and light levels:
#show hw-module interface g0/0/1 transceiver status
My ISR4431 router has randomly rebooted a couple times, finally found this field notice:
The router is being used for light VPN duties, nothing too heavy. After upgrading per the Field Notice, all has been fine.
I've recently had to troubleshoot some SIP calls going through a Cisco router (CUBE) and needed a way to capture the stream and view it easily.
To do this, you will need:
- CLI access to the router
- Wireshark installed on your PC
- tftp server installed on your PC (I used tftpd found here: tftpd32)
Here are the steps required: