Tag: cisco

When they throw a Cisco guy to do something with HP networking gear

…There’s a nice little pdf to get you through

UPDATE on 13 Nov 2015:
It was a real pleasure to have Jeff Carell joining in with a comment about an updated version of “HP Networking and Cisco CLI Reference Guide”. Jeff is the author of “Guide to TCP/IP 4th Ed”, a great network fellow and IPv6 enthusiast whose work on informing the community about networking technology is greatly appreciated by the author of this blog. Link is added to the end of the post. Thanks Jeff.

HP is aware that most of networking engineers start their learning process in Cisco Networking Academy. Is is a normal course of events if you want to learn networking. Cisco has the very best study materials and best, carefully developed syllabus that is both high quality and most detailed in the world of networking. Not to mention the high reputation that engineers get with Cisco certificates standing by their names.

Cisco CLI

On the other hand, when you take an average mid-size business customer today you will probably see that he is mostly concerned about the price and not so much about the feature-set and robustness of IT equipment. And there you have your situation in which customer decides to go with HP rather than Cisco gear in their communication closet.

| Continue Reading.. |

Cisco VIRL – Virtual Internet Routing Lab

Virtualisation

Cisco VIRL - Virtual Internet Routing Lab2In a world in which every day I hear virtualization at least 50 times it would be very strange that there is some part of our digital environment which is not yet virtualised. Today we can see that almost every piece of our server equipment is going to the cloud hence is being virtualised. That is not a new story, server virtualisation i basically existing for decades now. Todays story is about next step in the virtualization process. There is finally a big desire to do the same thing with networking equipment. That’s obviously the way to go as there are more and more server on one hypervisor or on one cluster in the data centers and that implies that would be too expensive to implement any kind of hardware networking devices for each virtual server instance. And that implies that we are living in a world where switches and routers are more and more becoming part of different virtualisation host kernels or hypervisors.

But now when that virtualization technology is basically a normal way of deploying almost all machines and there is nothing standing in between network devices virtualization and us why there is no way to use that technology and make for us a virtualized modeling tool for network design and troubleshooting to?

GNS3 vs VIRL

Yes, there is GNS3 for years now but to be sincere, I tried to use if for some design and troubleshooting sessions and it is so time-consuming to set everything to work right that is was at the end easier to do it on a piece of paper.

| Continue Reading.. |

Cisco EnergyWise – New way to save energy

With Cisco EnergyWise Technology you can effortlessly direct the energy consumption of every network connected IT device in your company.

EnergyWiseCisco EnergyWise is certified as the winner of the Best of Interop Green award. It is a very important part of the Cisco Borderless Network Architecture. Quite significantly, this kind of equipment is extremely efficient in the management of campus IT energy, enterprise-level monitoring as well as reductions of extensive energy.

 

 

 

 

Energy reduction is efficient and convenient. With the assistance of your Cisco network as the core of your energy intelligence, there are many possibilities such as:

  1. Oversee the energy necessities of new and current Power over Ethernet (PoE) devices.
  2. Increase the limit of power management to PC’s, desktops and laptops.
  3. You can also append “power save plus mode” to IP phones in order to increase power savings where it is possible.
  4. Enlarge your control to high-power devices like virtual compact switches and desktops.
  5.  Through the interactive GUI’s you can control all energy conservation efforts.

    | Continue Reading.. |

MAC Address Flooding – MAC address table overflow attacks

MAC address flooding attack is very common security attack. MAC address table in a switch has the MAC addresses available on a given physical port of a switch and the associated VLAN parameters for each.

MAC flooding attacks are sometimes called MAC address table overflow attacks. To understand the mechanism of a MAC address table overflow attack we must recall how does a switch work in the first place.

| Continue Reading.. |

About Cisco IOS and Juniper JUNOS

Cisco Internetwork Operating System and Juniper OS, what are they and all about these widely spread network device operating systems.

Cisco internetwork operating system has been confirmed as the world foremost networking infrastructure software. This software presents the perfect picture of the integration of modern technology. Cisco IOS is highly accommodating for hardware platform. This operating system is popular due to its functionality. At this time, bulk of active network systems such as small home, office router and world’s leading service provider’s networks system, all are using it in order to conduct different types of operations. You can say, Cisco Internetwork Operating System is the central and extensively influenced infrastructure software for the networking all over the world.

| Continue Reading.. |