The serial number of a Cisco device tells you when and where it was made. It has this format: LLLYYWWXXXX. LLL is the location code, YY is the year code, WW is the week code, and XXXX is a unique identifier.YY is the year code, which is the number of years since 1996. Here are…
GUI Password for ATA 190
Recently, someone inquired about the password for the ATA 190. They attempted to use the credentials cisco/cisco. To clarify, I reviewed the ATA 190 administration guide, and it became evident that there are two distinct accounts for this device. I hope this information proves beneficial to anyone seeking it.
Which services need to be restarted after the installation of the device package?
A device package adds new phone models to Unified CM and updates the firmware and configuration files that activate features on your Cisco device. You may need to configure some settings or attributes for the new features, which may be disabled by default. You can download device packages from the Cisco Unified Communications Manager software…
How to disable UPN discovery for Jabber
Jabber normally comes with User Principal Name (UPN) enabled. This means that Jabber will use the Windows local username to find the user in Cisco UDS. If the user is found in CUCM, Jabber will automatically fill the username in the login window and ask for the password. UPN enabled Jabber does not allow the…
Cisco Catalyst 9162, 9164, or 9166 Series Access Points from DNA management mode to Meraki mode.
In this blog post, I will share how to convert Cisco Catalyst 9162, 9164, or 9166 Series Access Points from DNA management mode to Meraki mode. This is useful if you want to add these access points to your Meraki cloud management dashboard. One of our customers faced an issue with their 9166 access point…
File System Check and Repair for Cisco IOS
The customer was attempting to add a new VLAN, but it was not appearing on a couple of the switches. The IT team approached us, suggesting that we hold the WIFI migration as they needed to replace the switch due to issues with Flash. They were unable to see the files in the flash when…
BSS coloring & OBSS PD on C9800
The new 802.11ax (Wi-Fi 6) standard addresses both Co-channel interference (CCI) and Overlapping Basic Service Set (OBSS) BSS Coloring is a method used to differentiate between the BSS of access points and their clients on the same RF channel. Wi-Fi 6 enables each AP radio to assign a value (from 1 to 63), known as…
C9800 ISSU Upgrade
ISSU is an upgrade from one image to another while the traffic flow. ISSU was released on version 17.1.X as beta and in production from version 17.3. Issu Eliminates network Downtime during the controller upgrade. Automate the process of upgrade without manual interventions. Prerequisites of ISSU upgrade ISSU Process Rolling AP upgrade its a new…
Push Notification Service Enhancement
The new Push Notification Architecture standardize with Webex Cloud. The updated enhancement require CUCM 15 or CUCM 12.5Su8 which still not released. New Architecture Current Architecture
Expressway SIP device Registration request was being rejected with Reason Registration mode not enabled
If you use expressway for device registration by default this is ON. But enabling the Smart licensing turns OFF the registration mode on Expressway. We must enable the Registration Mode manually .
CRAZY NETWORKING 