Yesterday a customer ask me if he can install a CUCM on a class B subnet which has 2046 IP address. The answer is … Thumb Rule A good rule of thumb is to limit the number of devices per VLAN to about 512, which is equivalent to two Class C subnets (that is, a…
Reason codes for LastOutOfServiceInformation
ReasonForOutOfService=10 — TCPtimedOut – The TCP connection to the Cisco Unified Communication Manager experienced a timeout error ReasonForOutOfService=12 — TCPucmResetConnection – The Cisco Unified Communication Manager reset the TCP connection ReasonForOutOfService=13 — TCPucmAbortedConnection – The Cisco Unified Communication Manager aborted the TCP connection ReasonForOutOfService=14 — TCPucmClosedConnection – The Cisco Unified Communication Manager closed the TCP…
ISE Upgrade Readiness Tool (URT)
Use the URT in order to detect and fix any configuration data upgrade issues before you start the upgrade process. Most of the upgrade failures occur because of configuration data upgrade issues. The URT validates the data before the upgrade in order to identify, and report or fix the issue, wherever possible. The URT is…
Use Slido for making your meeting interactive.
Last week during a meeting i found host struggling to collect answers to his questions.Host was using chat option for his Quiz. I thought of wiritng this blog to make my community aware about the Slido. Whats Slido Sldio is an easy to use Q& A and polling platform. How to get it. Its free…
Ansible on Docker
I prefer running Codes on a container than a virtual machine and I use docker container to run the ansible playbooks. Today’s blog is about setting up a docker container environment for ansible. Pull Image:- I use python image to setup the Ansible container. Create Docker Container :- Verify the Running Docker:- Use VSCode to…
Backup and Tech support using Ansible
Making use of Ansible to collect backup files ,show tech and see the versions of Cisco switches. I use docker container to run the ansible playbooks. Inventory file:- Create an inventory file Yaml File:- Create a yaml file. The below code will save the Backup and show tech file on the root folder with the…
Vbrik HA Proxy Certificate Renewal
If you have an old CSR and private key, there is no need to generate the CSR. Since i dont have the old key i have to go with generating the CSR. Generating CSR Its mandatory to have DME FQDNS as subject alternative Names on HA Proxy certificate. To add the DME FQNDS on SAN…
Vbrik DME Certificate Renewal
Certificate renewal is always a tricky part. Today’s blogs is about how to renew a Vbrik DME certificate. If you have an old CSR, there is no need to create a new CSR. since i don’t have the Old CSR with me, im generating a CSR for the new certificates. Go to DME Device administration…
Expressway DMI Interface
From 12.7, expressway support dedicate Management Interface(DMI). s. Instead of sharing a routing interface with other traffic, management traffic is sent and received through LAN3 and no other traffic uses that port.The DMI is disabled by default. Enabling DMI Enabling the DMI function . This switches the LAN3 Port for management Traffic. Still you can…
Activation Code
Activation is a single use 16 digit code a user must enter on the phone while registering the phone. Using activation code An administration can provision the phone without collecting the mac address. Activation cod can be used to prison a large number of phones, a single phone, or even to re-register existing phones Activation…
CRAZY NETWORKING 