The Disconnect. Good Enough Is Good Enough.
A Meeting room. Discussing the possible options for product and vendor strategy. Company urgently needs to avoid capital expenditure and reduce maintenance costs. The engineer across the table is wearing a vendor t-shirt, a few years old and looks a bit tatty. The table and chairs are tired and a bit worn. I took a […]
Author information
The post The Disconnect. Good Enough Is Good Enough. appeared first on Packet Pushers Podcast and was written by Greg Ferro.
6125XLG console/aux port access for IRF renumber
For HP Blade enclosures, the 6125XLG can be used as a non-blocking 10G blade server access switch with 4x40G uplink ports. Since it is based on Comware 7 (very similar to the 5900AF model, but in a blade switch form … Continue reading
Getting Started with Docker
It can’t be helped. There’s just too much cool stuff out there and not enough time to spend dedicating myself to one piece of technology. That being said, I fully intend on continuing the Chef posts, but Im going to be mixing in some docker posts as well. Im hoping that there’s some cross-connect as well where we can talk about using docker in conjunction with Chef as well.
Docker is something that I haven’t seen before. From what I have seen so far, it appears to be an incredibly easy way to containerize applications and software on a linux system. The docker website summarizes docker as..
“An open platform for distributed applications for developers and sysadmins.”
That summarizes things nicely, but again, why is a network guy interested in this? First off, I’m a little tired of VMware. Don’t confuse me being tired with a general dislike of the product. I’ve been using VMware for years and for the most part, it works well and provides the functions I need. On the flip side, Im not convinced there’s anything particularly special about VMware.
I’ve been using ProxMox at home for some time and it does everything that I Continue reading
What’s in a Name?
Most home users select their wireless network name without much thought to the actual name except to make it easy for them to see and connect to. So many people never think that the networks name also known as the Service Set Identifier or SSID could be a security risk. Okay, a security risk may be a reach, but let’s just say some SSIDs are more secure than others, and I will list some dos and don’ts when selecting an SSID.
Before the list lets discuss what makes the SSID important. Hackers need to gather several pieces of information including the SSID to crack a networks WPA/WPA2 password. Hackers have pre-configured tables with this information including common or default SSID names and if you’re using one of these common names you have made their job easier and your network more of a target.
- Do change the SSID from the factory set default wireless network name.
- Don’t select a name in top 1000 most common SSIDs. Now this list is very long and at first glance you will notice a lot of factory given default names (dlink, Linksys, 2wire, Netgear, etc…), so as mentioned above change the default name.
- Don’t use your Continue reading
Internets of Interest for 12th June 2014
Collection of useful, relevant or just fun places on the Internets for 12th June 2014 and a bit commentary about what I’ve found interesting about them: Will Network Engineers Become Programmers? « ipSpace.net by @ioshints – Ivan explains his view on the ways that network folks will work with programmers. I think he describes […]
The post Internets of Interest for 12th June 2014 appeared first on EtherealMind.
Amid raging violence, Iraq orders Internet shutdowns
Update (10:00ET, 14-Jun-2014): See below for a copy of Friday’s Iraqi MoC order to disconnect social media.
Iraq is descending into further violence, as militant group ISIL takes control of Mosul and beyond. Renesys has observed two large Internet outages this week (here and here) that our sources confirmed to be government-directed outages. These interruptions appear to coincide with military operations, amid concerns that ISIL forces are using Internet websites to coordinate their attacks.
2nd massive outage this week in Iraq at 14:27UTC lasted over 3hrs. ISPs Earthlink, IQNetworks impacted pic.twitter.com/pR8ab7jFAa
— Renesys Corporation (@renesys) June 12, 2014
#iraq-i government to shutdown internet in #Nenwah #Kirkuk #salah_al_deen #alanbar #leaked -no prove- #email #ISIS pic.twitter.com/eM3OqkVzyo
— Jassey (@eng_mohamedarif) June 12, 2014
The screencapture image in this tweet shows an email message announcing the latest shutdown. It reads:
Dear Valued customers
Due to the current security situation in iraq and as per the MOC instruction sent by the PM Mr Nori Kamel Al-Maliki ,the internet service will be suspended for the below provinces until further notice starting from today Thursday 12/6/2014 , Continue reading
Musing: Cisco Playing the Underdog
Couple of quotes from John Chambers keynote during Cisco Live that I seemed to leap out at me: “You are going to see a brutal, brutal consolidation of the IT industry where out of the top five players, only two or three of us will be meaningful in as quick as five years.” “When we […]
The post Musing: Cisco Playing the Underdog appeared first on EtherealMind.
Coffee Break Show 9
This is “The Coffee Break”. A podcast on state of the networking business where we discuss vendors moves and news, analysis on product and positioning, and look at the business of networking. In the time it takes to have coffee break. Show Links Cisco’s 3 Commandments – Drew’s take on Chambers’ CLUS keynote Cisco Faces […]
Author information
The post Coffee Break Show 9 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
Coffee Break Show 9
[player] This is “The Coffee Break”. A podcast on state of the networking business where we discuss vendors moves and news, analysis on product and positioning, and look at the business of networking. In the time it takes to have coffee break. Show Links Cisco’s 3 Commandments – Drew’s take on Chambers’ CLUS keynote Cisco […]
The post Coffee Break Show 9 appeared first on Packet Pushers.
Coffee Break Show 9
[player] This is “The Coffee Break”. A podcast on state of the networking business where we discuss vendors moves and news, analysis on product and positioning, and look at the business of networking. In the time it takes to have coffee break. Show Links Cisco’s 3 Commandments – Drew’s take on Chambers’ CLUS keynote Cisco... Read more »SDN: Déjà vu all over again?
by Steve Harriman, VP of Marketing - June 13, 2014
Having been in this industry longer than I care to think about (I cut my teeth in operations and systems programming on mainframes and early Intel 8080-based ‘microcomputers’), I’ve seen a few technology innovations that were truly disruptive and some that claimed to be but ultimately morphed into something else or were relegated to a niche (remember the Infiniband ‘revolution’ in the early 2000s?). Software defined networking and network functions virtualization clearly threaten to upset the status quo, which in this case, is the vast ecosystem of hardware-based switched and routed networks, and the network equipment manufacturers who build the gear. Cisco, arguably, has the most to lose, but potentially, the most to win also.
In Peter Burrows’ recent Bloomberg article, reflecting how SDN has become mainstream news, he points out that the existing market for switches and routers is growing at the very modest rate of three percent a year. While this business is the lifeblood of companies like Cisco, Juniper, Alcatel-Lucent and Huawei, it is becoming commoditized with downward price pressure and diminishing technological differentiation. These players can certainly Continue reading
Docker Networking
There has been a ton of information out there on Docker over the last week. Because the impact on networking is often overlooked for new technologies, I figured I’d get a head start to understand the basics of Docker Networking. This post documents the steps I took to test docker analyzing the network constructs that are automatically configured during container creation.
First, I installed Docker using instructions for Ubuntu 12.04 (LTS) 64-bit.
Post install, but before a container was created, here is the output of my Ubuntu machine. Two interfaces: eth3 (192.168.1.134) and lo (127.0.0.1). This Ubuntu machine is running in virtual box and eth3 is bridged onto my home network of 192.168.1.0/24.
Post install, but before a container was created, here is the output of my Ubuntu machine. Two interfaces: eth3 (192.168.1.134) and lo (127.0.0.1). This Ubuntu machine is running in virtual box and eth3 is bridged onto my home network of 192.168.1.0/24.
Creating my first Docker container. This took about a minute (maybe less) to download and start. Pretty impressive. Notice the last line in the screen shot below. It takes you right into the container shown at ‘root@c7ad293f989:/#’
In a new bash prompt because the existing shell is now used for the container, check out an ‘ifconfig.’ Notice the two new additions: docker0 and veth068f. docker0 is a Linux bridge and veth068f Continue reading
Briefing: Corsa Technology
Takeaway - Corsa Networks is focussed on provided a hardware data plane for SDN WAN use cases.
The post Briefing: Corsa Technology appeared first on EtherealMind.
Response: John Chambers sold more than 30% of his Cisco shares in last month. Heavy sales from others. Thats not good.
This article at Seeking Alpha shows that John Chambers sold more than 30% his Cisco shares last month and is just one of 8 other executives who sold significant numbers of shares in the last month.
The post Response: John Chambers sold more than 30% of his Cisco shares in last month. Heavy sales from others. Thats not good. appeared first on EtherealMind.
Video over Internet
Couple days ago I made an interesting talk about Video Traffic over Internet. Sales engineer goes to company and he claims that Video traffic can be carried over Internet without any problem. This is of course wrong and to understand why I have to explain some technical concepts. Main take away from this article is […]
Author information
The post Video over Internet appeared first on Packet Pushers Podcast and was written by Orhan Ergun.
Planning a Project Before Your Execution
This year I have worked on a number of projects and most of them had no planning while others had very little. The planning phase of a project is the most critical part of a project. Planning can not only make or break a project, but your reputation as well. If a project doesn’t go […]
Author information
The post Planning a Project Before Your Execution appeared first on Packet Pushers Podcast and was written by Charles Galler.
Lets Meet: Travelling in San Francisco Jun16-22, 2014
I'm be in San Francisco next week and available of meetings and #BeerOclocks
The post Lets Meet: Travelling in San Francisco Jun16-22, 2014 appeared first on EtherealMind.
Starting with Chef
You might be asking yourself why a network engineer would be concerning himself with a product like Chef. It’s a long story, but lets start by saying that my interest was first peaked when I heard that the new line of Cisco Nexus switches would have a integrated Chef client. I’ve known about Chef and Puppet for a long time, but I’ve never really sat down and looked to see how they worked. So rather than starting with Chef on Nexus, I thought it would be prudent to get some base experience with the application in a more ‘normal’ application.
So how does this fit into networking? I think we can all agree that data center networking can change. I’m carefully phrasing that statement by using the word ‘can’. If you don’t know it already, I don’t buy the ‘SDN will change everything you do’ line of thinking. In fact, I try as hard as I can not even to use the term SDN. Why? Because it’s far too vague of a term that can mean almost anything depending on you how you want to interpret it. Beyond being a Continue reading
“This account is locked. You can’t log in” for super user in Junos Space
After a few fat-fingered attempts to get the password entered, i realised I had locked myself out of a new Space installation. There’s only one user at that stage – ‘super’. And now I’ve locked the account. Damn.
To unlock this, you will need to go on the console and enter debug mode. This means you need to know the admin and maintenance mode passwords. Assuming you do, do the following:
mysql> use build_db
Database changed
mysql> select * from USER_IP_ADDRESS;
+--------+--------------+---------------------+--------------+----------+---------+
| id | ipAddress | ipLockedTime | failureCount | isLocked | user_id |
+--------+--------------+---------------------+--------------+----------+---------+
| 229377 | 172.20.45.85 | 2014-06-11 16:29:07 | 0 | 1 | 610 |
+--------+--------------+---------------------+--------------+----------+---------+
1 row in set (0.00 sec)
Update the table to make isLocked 0:
mysql> update USER_IP_ADDRESS set isLocked=0;
Query OK, 1 row affected (0.08 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select * from USER_IP_ADDRESS;
+--------+--------------+---------------------+--------------+----------+---------+
| id | ipAddress | ipLockedTime | failureCount | isLocked | user_id |
+--------+--------------+---------------------+--------------+----------+---------+
| 229377 | 172.20.45.85 | 2014-06-11 16:29:07 | 0 | 0 | 610 |
+--------+--------------+---------------------+--------------+----------+---------+
1 row in set (0.00 sec)
mysql> quit
