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CISCO Stories

SDxCentral’s Weekly Roundup — February 22, 2019

Published on: 2019-02-21

Here are the week's strays and stragglers we roped for you: Ethernity Networks launched a field-programmable gate array (FPGA)-based virtual private network (VPN) gateway. Splunk withdrew from Russia. The application management company will no longer sell its software and services to companies ...

Cisco Says Mobile Internet Traffic Will Reach Nearly a Zettabyte by 2022

Published on: 2019-02-21

As usual, the Cisco Mobile Visual Networking Index points to huge increases in the amount of data being trafficked through networks. And, as usual, it's a master class in exotic numbers. The report, which covers the 2017-2022 time frame, says that the annual run rate of mobile internet traffic ...

Cisco warns on HyperFlex security vulnerabilities

Published on: 2019-02-21

Cisco this week identified two "High" security vulnerabilities in its HyperFlex data-center package that could let attackers gain control of the system. HyperFlex is Cisco's hyperconverged infrastructure that offers computing, networking and storage resources in a single system.

Cisco warns on HyperFlex security vulnerabilities

Published on: 2019-02-21

Cisco this week identified two "High" security vulnerabilities in its HyperFlex data-center package that could let attackers gain control of the system. HyperFlex is Cisco's hyperconverged infrastructure that offers computing, networking and storage resources in a single system.

Cisco exec. details how Wi-Fi 6 and 5G will fire-up enterprises in 2019 and beyond

Published on: 2019-02-21

Few technologies have the potential to shake up enterprise networks like WiFi 6 and 5G technologies do in 2019 and beyond. 5G carrier-based wireless is going to start rolling out, bringing a promise of dramatically better performance to mobile workers and the enterprise, and Wi-Fi 6 (802.11ax) ...

Cisco Highlights 'Cognitive Collaboration' at Analyst Summit

Published on: 2019-02-20

We have so much data available today and now we need help understanding what it means. Last week, Cisco's Collaboration Technology Group (CTG) held an analyst-only event in the John T. Chambers Executive Briefing Center in San Jose, Calif.

Wi-Fi 6, 5G play big in Cisco’s mobile forecast

Published on: 2019-02-19

The popularity of mobile devices will continue its dramatic growth over the next four years as new technologies kick in with higher density and bandwidth, according to Cisco's annual Global Mobile Data Traffic Forecast Update (2017 - 2022) released this week.

Why I’m excited for Apple’s Wi-Fi 6 iPhones

Published on: 2019-02-19

Don't fret too much when Apple fails to introduce a 5G iPhone this year, it's not terribly important that it does. Wi-Fi 6, on the other hand... The latest edition of Cisco's Mobile Visual Networking Index (VNI) Forecast (2017 - 2022) makes several predictions around 5G.

Cisco: Global Mobile Networks Will Support More Than 12 Billion Mobile Devices and IoT Connections by 2022; Mobile Traffic Approaching The Zettabyte Milestone

Published on: 2019-02-19

SAN JOSE, California - February 19, 2019 - At the inception of Cisco's Mobile Visual Networking Index (VNI) Forecast more than a decade ago, mobile (or cellular) traffic represented less than five percent of total IP traffic crossing global networks. Today, the role and reliance placed on mobile ...

Goldman Sachs and Cisco to Host Service Provider Tech Talk

Published on: 2019-02-19

SAN JOSE, Calif, --- February 19, 2019 --- Cisco will host a Tech Talk with Goldman Sachs to discuss Cisco's Service Provider strategy and outline how Cisco is redefining the network for 5G to help Service Providers grow revenue, reduce cost and mitigate risk.

Cisco Reports Second Quarter Earnings FY19

Published on: 2019-02-13

Q2 Results: Revenue: $12.4 billionGrowth of 7% year over year (normalized to exclude the divested SPVSS business for Q2 FY 2018) Earnings per Share: GAAP: $0.63; Non-GAAP: $0.73Non-GAAP EPS increased 16% year over year Q3 Guidance (normalized to exclude the divested SPVSS business for Q3 FY ...

Cisco pushes silicon photonics for enterprise, webscale networking

Published on: 2019-02-08

Cisco says it's closed its deal to buy optical-semiconductor firm Luxtera for $660 million bringing it the advanced optical technology customers will need for speed and throughput for future data-center and webscale networks.

Cisco Calls for Privacy to be Considered a Fundamental Human Right

Published on: 2019-02-07

San Jose, Calif -February 7, 2019 - Cisco today issued a call to governments and citizens around the world to establish privacy as a fundamental human right in the digital economy. Today, connectivity and technology have become the foundation for peoples' economic, social, and cultural ...

Cisco Schedules Conference Call for Q2 Fiscal Year 2019 Financial Results

Published on: 2019-01-30

SAN JOSE, Calif, --- January 30, 2019 --- Cisco has scheduled a conference call for Wednesday, February 13, 2019 at 1:30 PM (PT); 4:30 PM (ET) to announce its second quarter fiscal year 2019 financial results for the period ending Saturday, January 26, 2019.

Durham County goes Cisco for enterprise network ops and security proficiency

Published on: 2019-01-23

The government in Durham County, N.C., was spending hours and hours manually provisioning its network and keeping security policies current, so it decided two and a half years ago to upgrade for the sake of efficiency and security.

Move to DNA or ACI?

Published on: 2019-02-21

Relationship of Cisco ONE to DNA and ACI Digital business relies upon a new digital network, in enterprise networking and the data center. This new network requires a software-based and policy-driven approach, automation, built-in security, proactive monitoring and troubleshooting.

EoS and EoL Announcement for the Cisco 819, 881, 887, 896, 897 and 899 4G LTE Routers

Published on: 2019-02-19

Cisco has announced the end-of-sale and end-of-life dates for the Cisco 819, 881, 887, 896, 897 and 899 4G LTE Routers. The last day to order the affected product(s) is July 29, 2019. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance ...

Network Break 222: SnapRoute Launches Network OS; Carbonite Buys Webroot

Published on: 2019-02-18

Podcast: Download | Embed Take a Network Break! The startup SnapRoute has launched CN-NOS, a new network OS that runs Kubernetes under the covers. VMware introduces new features in its SD-WAN appliances, and Carbonite will acquire Webroot for $618.5 million. Russia contemplates mechanisms to ...

Cisco 900 Series Integrated Services Routers-Ordering Information

Published on: 2019-02-18

The Cisco 900 Series Integrated Services Routers (ISRs) combine Internet access, comprehensive security, and wireless services in a single high-performance device that is easy to deploy and manage. Cisco 900 Series ISRs are well suited for deployment as Customer Premises Equipment (CPE) in ...

Cisco 900 Series ISRs-Chassis Views, Power Supply and Specs

Published on: 2019-02-15

In this article, we'd like to describe the views of Chassis, LED Indicators, Power Supply, and Specs of Cisco 900 Series ISR. This section contains front and back panel views of the Cisco 900 Series ISR-showing locations of the power and signal interfaces, interface slots, status indicators, and ...

The Cisco 900 Series ISR Migration

Published on: 2019-02-14

Cisco launched a new SOHO router-the 900 Series ISRs. What is the Cisco ISR 900 series used for? Find the Right ISR 900 Model The Cisco 900 Series ISR Migration The more important is Cisco ISR 900 series models will replace the most Cisco 800 Series ISRs.

The Other Intent-Based Networking

Published on: 2019-01-31

Anyone who is in networking and who knows me is likely aware that I find a fair amount of fault with "Intent-Based Networking". It has rubbed me wrong since I first heard it as the latest Cisco campaign, having been through many other flavors-of-the-month through the years.

Just Say No to Jumbo Frames

Published on: 2019-01-24

How do you feel about jumbo MTU? I seem to periodically get into debates about jumbos. I'm highly allergic to jumbos. Let's examine the facts (as I see them), and then we'll get to the cause of my allergic reaction. TL;DR: jumbo can cause major operational pain for network administrators.

Cisco SP Nails It at NFDx

Published on: 2019-01-16

The Networking Field Day Exclusive one-day event with Cisco's Service Provider business unit definitely exceeded my expectations, and I believe showcased a different approach to technology and their customers than we might have seen from the Cisco Systems of four or five years ago.

Networking Field Day Exclusive with Cisco Service Provider

Published on: 2019-01-11

On Tuesday of next week (15-Jan-2019) I will be part of an amazing group of people who are lucky enough to meet with Cisco's Service Provider team. This event will be streamed over on the Tech Field Day website.

Ways to Automate VXLAN

Published on: 2019-01-10

More and more sites are deploying Cisco Nexus 9K-based fabrics. Basically, if the time has come for datacenter switch refresh, you have two choices: Nexus 7700 etc. with a "classic Nexus" design (core, distribution, Top of Rack, FEX), or Nexus 9K-based fabrics. Fabrics are cool and look like a ...

The Changing Cisco QoS Environment

Published on: 2019-01-03

A few months ago, I wrote about the tradeoffs between using a L3 switch and a router. That blog noted that there are a lot more QoS capabilities on the Cisco routers. L3 switches provide a much more constrained set of QoS features, presumably those suitable for high speed processing in chips.

2018 was a good and busy year ! Things I have done during the last year

Published on: 2019-01-02

2018 is done! I wanted to share what I have done during the last year. During 2018, probably the biggest decision for me was establishing a company in Turkey. This photo was taken during a CCDE Bootcamp 10 days after I opened my office in Istanbul.

BGP Implicit and Explicit Withdraw

Published on: 2019-01-02

BGP Implicit and Explicit Withdraw are important BGP messages. Understanding these two mechanisms not only help for understanding BGP convergence but also helps for BGP path diversity. While I was explaining BGP Add-Path in my Instructor Led CCDE course, I used the term 'BGP Implicit Withdraw' ...

Will Cisco Viptela continue to be one of the Leaders in SD-WAN ?

Published on: 2018-12-28

In 2017, Cisco completed Viptela acquisition. It is not a surprise for me that Gartner published Cisco as the Leader in WAN Edge Infrastructure in 2018. This is Gartner's famous Magic Quadrant report. I wrote a post for Silverpeak before. Silverpeak is listed in the Leaders category.

Cisco IT Blog Awards Finalist

Published on: 2018-12-10

I'm proud to announce that I've been selected as a finalist in the Cisco IT Blog Awards in the "most inspirational" category. I'm happy to be in this category as I hope that my posts here have inspired others to

Could the Cisco CCIE lab in RTP be moving?

Published on: 2018-11-06

Let me preface this post by saying that this post is not Cisco official nor sponsored. This post should be ...Continue reading →

10 Year CCIE – My Reflection

Published on: 2018-11-05

How time flies - it is now over 10 years ago that I earned my Cisco CCIE R&S number of ...Continue reading →

Troubleshoot a DMVPN phase 3 architecture

Published on: 2018-10-09

In the last article, I explained how to configure DMVPN phase3, but what are the most useful commands to troubleshoot this type of network architecture? Five are the main group of commands used to troubleshoot a DMVPN topology: The "show dmvpn" and "show ip nhrp" commands permit to obtain the ...

DMVPN Phase 3: a complete guide

Published on: 2018-07-16

In a previous article, I explained what is and how it works DMVPN technology. In this article you see how to configure DMVPN phase3. This phase allows spokes to build a spoke-to-spoke tunnel and to overcomes the phase2 restriction using NHRP traffic indication messages from the hub to signal to ...

Understanding Cisco DMVPN

Published on: 2018-06-26

In an old post, dated 2011, I explained various types of VPN technologies. In seven years several things have changed: SHA1 is deprecated, des and 3des are no more used for security issues, but some VPN technologies are still used with protocols more secure (SHA256, AES, ...).

Cisco Smart Install Remote Code Execution

Published on: 2018-04-05

At the end of March, Cisco published a stack-based buffer overflow vulnerability in Smart Install Client code. This vulnerability enables an attacker to remotely execute arbitrary code without authentication. So it allows getting full control over a vulnerable network equipment. Cisco Smart ...

Cisco WebVPN critical bug. Patch it now!

Published on: 2018-02-03

Few days ago, Cisco published a critical advisor with a score of 10/10 about ASA and Firepower devices. The vulnerability known as CVE-2018-0101 and discovered by Cedric Halbronn, Senior Researcher at NCC Group is due to an attempt to double free a region of memory when the webvpn feature is ...

New codec on the block – recording failures and CUCM 11.x

Published on: 2018-10-18

The inspiration for this post comes from spending way too much time trying to solve an issue that would have taken only minutes had I been aware of the key information I'm generously bestowing upon my fine readers today. The problem started with reports that just 8841 phones weren't successfully ...

Meraki's LittleTable Isn't So Little Anymore #MFD3

Published on: 2018-09-26

Way, way back in 2013, I attended Wireless Field Day 4 and I heard a presentation by Sean Rhea of Meraki about their backend database LittleTable, how it was developed, how it worked and how it grew. A few highlights of Sean's presentation covered the server redundancy with data-center ...

Mobility Field Day 3 Approacheth #MFD3

Published on: 2018-09-04

Mobility Field Day is coming sooon. September 12-14th I will gather with 11 other MFD delegates in San Jose to take part in Mobility Field Day 3! I haven't taken part in a full length Tech Field Day event since Wireless Field Day 8 (and that was a long, long time ago!).

Attacking Wireshark

Published on: 2018-09-03

Every once in a while there is some news about Wireshark being vulnerable to being attacked/exploited/pwned, meaning that there is a way to craft frames/packets in a pcap/pcapng file to make Wireshark crash and (if done right) execute malicious code. So let's take a look at what that means and ...

Resolution Immediacy and Deployment Immediacy – ACI Master Class

Published on: 2018-08-17

When configuring ACI, have you ever wondered what those Resolution Immediacy options [ Immediate | On Demand | Pre-provision] and the Deployment Immediacy options [ Immediate | On Demand] do? Read on to find out. I always like to start with a picture.

Nyansa Voyance at NFD18

Published on: 2018-08-16

Disclaimer : I was lucky enough to have been invited to attend Network Field Day 18 this past July in Silicon Valley. This event brings independent thought leaders to a number of IT product vendors to share information and opinions.

Cisco OpFlex

Published on: 2018-06-12

Cisco ACI uses OpFlex to communicate with VMWare DVS/VDS. OpFlex is an extensible policy protocol designed to exchange abstract policy between a network controller and a set of smart devices capable of rendering policy. OpFlex relies on a separate information model understood by agents in both ...

Cisco Live 2018 – Geek Camp Returns

Published on: 2018-07-10

It's hard to believe it's been nearly a month since Cisco Live 2018! The amazing week at Geek Camp was filled with fantastic sessions, Tech Field Day goodness, and lots of great conversations with incredibly talented people. Engineering Deathmatch had a great lineup, and even launched a new quiz ...

Cisco Live 2018 – Yes, I Went Too

Published on: 2018-07-04

It's been a very busy month or so. June is always like that, it seems. There's ARRL Field Day, which is always the last rainy weekend in June. This year, Cisco Live was in June, and that typically includes Tech Field Day activities. Right before that, we had the whole family in town for a family ...

On my way to CLUS

Published on: 2018-06-09

I am excited to be in my first Ciscolive US starting tomorrow in Orlando, Florida. This post is about how I spent my time on the way to CLUS. When I decided I will go to CLUS, I booked my return fl...

CiscoLive 2018

Published on: 2018-03-09

For the first time I am going to be at CiscoLive US in June (thanks to CSC Designated VIP program …Continue reading →

WPA2 KRACK Vulnerability, Getting Information

Published on: 2017-10-16

*** This page is being updated regularly. Please check back periodically. ***I'm sure everyone who does anything with networking or Wi-Fi has heard about the announced WPA2 KRACK vulnerability. I won't go into depth with my opinion on it. I'd just like to start a collection of useful information ...

Cisco Aironet Developer Platform

Published on: 2017-10-07

Cisco Aironet Developer Platform A few months ago I had heard about a solution Cisco was working on to provide developers access to the modular interface on the AP3800. Cisco, for awhile, has had some sort of modularity in their high end AP but it was reserved for future standards or Cisco ...

Cisco Live US 2017 – Saturday Adventure

Published on: 2017-05-05

For the last couple years, on the Saturday before Cisco Live US kicks off, we like to go and do something in the host city. Nothing big. Nothing fancy. Just something we aren’t going to be able to do once…Read more →

Cisco ASA – SourceFire 5506-X | direct upgrade to latest build

Published on: 2017-08-04

In my previous post in april I figured out how to upgrade the software step by step. In the mean time I found out it’s possible to do this in once. You need to setup first some tools before you can start. Have a TFTP and a FTP Server TFTP server needs to contain the…

Cisco | Cisco IOS router to Meraki Appliance | site-to-site VPN with Zone based Firewalling

Published on: 2017-01-18

Lately I'm busy to configure Cisco IOS routers in combination with Remote offices where we place Meraki Appliances (like the MX64, MX65 or the Z1) When we do this we create also a VPN connection (site to site). In this setup the Main office has a Cisco IOS router.

CCDP - Introduction

Published on: 2016-03-10

Today I am embarking on a new method of study for me. I have been procrastinating taking my CCDP ARCH exam(300-320) for over a year now. To achieve my goal of passing it finally, I have decided to post my study notes as I go through the Encouragement, brow beating and other forms of ...

Cisco Live!: Survival Guide

Published on: 2015-06-01

By now most people in the networking industry have heard that there will be a large gathering of networking people in San Diego, CA June 7-11. For those that are going, especially first timers, here are some of my tips and tricks. Training This is to me the meat of the week.

Still Undecided About Cisco Live? Take a Sneak Peek!

Published on: 2015-04-15

If you still aren't convinced to go to Cisco Live! this year in San Diego, perhaps a sneak peek at two of the courses will help. BRKRST-2311P - IPv6 Planning, Deployment and Troubleshooting (1 Hour) Presented by Jim Bailey - Technical Leader, Cisco 10:00am PDT / 12:00pm CDT/1:00pm EDT This ...

It's Dirty Work, But Somebody's Gotta Do It

Published on: 2015-02-14

Network Engineers are known to have to work in dirty places like under desks, janitors closets (err I mean network closets), and those weird spaces in mechanical rooms in which someone decided to hide a switch or two.

The -B Domain for Cisco Access Points

Published on: 2016-11-19

I know I am a few months late on this one, but figured it would be worth throwing out there. Earlier in the year Cisco updated and released its access points to be compliant with -B domain regulations set forth by the FCC in North America.

SourceFire & AMP showing up on CCNP: Security

Published on: 2016-09-22

Looks like the SITCS Exam, that is part of the CCNP: Security exam is going from v1.0 to v1.5. SITCS is the exam oriented around 'Implementing Cisco Threat Control Soluation'. Now, it only makes sense as the original version of this exam was more geared towards Cisco IPS & CX which has since ...

Cisco ASA presents self-signed cert in certain SSL negotiations – CSCuu02848 / CSCuw02001

Published on: 2015-11-12

Just kind of a shout-out to those running ASA's, be careful when you upgrade to v9.4+ or v9.5+, and beyond. In v9.4+ when the ASA attempts to negotiate an SSL connection it will attempt to use an ECDSA Cipher as part of TLS v1.2 if the client supports Elliptic Curve ciphers.

bgp – advertising multiple paths

Published on: 2014-02-07

Yes, it can be done by BGP. What was the question anyway? Path hiding on a route server running BGP can happen if the route server has been configured to filter the chosen best path from reaching a particular route server client. Assuming a traditional best path selection, when the same prefix ...

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