When a customer calls with a problem or request I often see a chance to investigate a technology, learn something new or apply random skills to find a creative solution.

This time is about an ASA, customer noticed too much traffic on the Internet facing interface. Syslog, Netflow, bandwidth monitoring and any other …

Day two of NFD16 with Cisco. The presentation was split in two parts. First part for Intersight, second part for Tetration.

I'll post here just a few thoughts about Intersight.

Merakify all the servers!

What's Cisco Intersight? If you're familiar with cloud-managed devices like Meraki the concept is quite similar.

A …

This week I attended and event organized by Cisco TAC in Krakow.

I've been in may Cisco events (Live, PVT, Pint etc.) but It was the first time for me at a TAC workshop and I was curious about it.

The Agenda

Agenda was clear: tree days with TAC engineers presenting best practices for installation and configuration with …

It's time for CLEUR again, for the second year in Berlin, that's 5 years in a row and I still get excited when the date arrives.

#CLEUR #CCIE #netvet #ciscochampion #merakimaster pic.twitter.com/IyF883JeYk

— Gian Paolo (@gp_ifconfig) February 21, 2017

For the second year I'm honored to be part of the Cisco Champion crew.

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ASA doesn't boot:

1Launching BootLoader...
2Default configuration file contains 1 entry.
3Searching / for images to boot.
4Loading /asa825-k8.bin... Booting...
5
6Press ESC to interrupt boot:
7
8Use BREAK or ESC to interrupt boot.
9Use SPACE to begin boot immediately.

We're now in rommon:

1rommon #0>

Check …

The Cyberspace a.k.a. the Internet is full of bad guys wanting to mess with our computers right?

Of course everyone of us have a firewall configured with proper access and inspection rules, don't ya?

Spamhaus and Team Cymru can help providing list of known bad IPs and subnets that should be filtered in our networks. …

Hi CLEUR!

This year, for the fourth year in a row, I've attended Cisco Live Europe.

I've earned the "Netvet" status, that means my name was on the wall before the keynote, ain't that great? ;-)

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With a good amount of surprise I've been nominated Cisco Champion for 2016:

Because of your impactful and valuable contributions to the IT community, you have been chosen out of hundreds of nominees to be part of the 2016 Cisco Champion program. Congratulations! …

Scripts, usually I write some because I don't like repetitive tasks and I'm lazy, meaning I prefer automation over useless hard work.

Don't know where I found this quote but I like it:

Don't spend your time doing work a well-trained monkey could do.

Today's request was quite simple: get model and serial number from a …

IP addressing design is a topic that follows every networker from the basic to the architect level of experience.

Usually we just pick a random range from RFC1918 and address all the devices.

But then VPN happens, and with VPN comes the risk of overlapping.

How do we fix overlapping? With NAT of course!

In this post …

Platform: CISCO2921 IOS version: 15.3(3)M5

Load the anyconnect package on the flash of the router and configure anyconnect client package (be patient, this may take a while...):

crypto vpn anyconnect flash0:/webvpn/anyconnect-win-4.1.04011-k9.pkg sequence 1
SSLVPN Package SSL-VPN-Client (seq:1): installed successfully …

Today I've attended a Meraki technical training course at Cisco offices.

The training was organized in short presentations of product features followed by hands-on labs based on all the products available today.

I was suprised to find not only people from small companies or system integrators but more that 50% of the …

This week I attended a two days training of Cisco DCINX9K.

The training is focused on Cisco Nexus 9000 switches in NX-OS mode.

NX9K can run two different software images, the full ACI image with all the cool SDN stuff and the traditional NS-OX image with some cool features like Python, Rest API, VX-LAN and more.

Now …