Network technologies and trends:

Cisco Systems


August 15, 2013  6:03 AM

How to configure disclaimer message in Cisco Iron Port Appliance? – Series 1



Posted by: Yasir Irfan
Cisco, Cisco Systems, How to configure disclaimer message in Cisco Iron Port Appliance – Series 1, Network Technologies and Trends, Networking

In one of my previous post , I discussed about the bug Microsoft Exchange Server 2010 is carrying related to disclaimer messages. The only option we had is to configure...

August 3, 2013  11:42 AM

What is EIGRP Over the Top?



Posted by: Yasir Irfan
Cisco Systems, Cisco Tips, Network Technologies and Trends, Routers, What is EIGRP Over the Top?

In the recently concluded Cisco Live, Cisco made an interesting announcement about EIGRP. Yes Cisco is coming out with “EIGRP Over the Top (OTP)” which enables routers running EIGRP to peer across the service provider infrastructure without their involvement. An interesting feature which may...


August 2, 2013  9:25 AM

Multiple Cisco Products are affected by OSPF LSA Manipulation Vulnerability



Posted by: Yasir Irfan
Cisco NX-OS software, Cisco Systems, Cisco Technical Assistance Center, Cisco Tips, Fabric Shortest Path First, Link State Advertisemen, Multiple Cisco Products are affected by OSPF LSA Manipulation Vulnerability, Network Technologies and Trends, Networking, Open Shortest Path First, OSPF Autonomous System, OSPF LSA type 1, OSPF packets, OSPFv3, routing table, unauthenticated attacker, vulnerability

The recent security advisory suggests that multiple Cisco products are affected by a vulnerability involving the Open Shortest Path First (OSPF) Routing Protocol Link State Advertisement (LSA) database. With the help of this vulnerability an unauthenticated attacker can take control of the OSPF...


July 23, 2013  12:12 PM

Cisco UCS Outperforms HP and IBM Blade Servers on East-West Latency



Posted by: Yasir Irfan
Cisco, Cisco Systems, Cisco UCS, Cisco UCS Outperforms HP and IBM Blade Servers on East-West Latency, erver-to-server data traffic, HP Blade Servers, HP Virtual Connect, IBM Blade Servers, IBM Flex System Fabric, IBM Flex System Fabric Switches, Network Technologies and Trends, Networking, networking switches, round-trip time, User Datagram Protocol

  These days the focus is increasing towards lower latency and high performing server-to-server data traffic (East-West). Cisco claims that they specifically designed their UCS unified fabric for this type of traffic. Cisco want to prove the claim made by their competitors that Cisco UCS...


July 17, 2013  6:59 AM

Upgrading ASA 5500 Series firewall, things to be considered – Series 1



Posted by: Yasir Irfan
ASA 5500 upgrade, ASA memory, Cisco, Cisco ASA 5500 Firewall, Cisco Systems, How to upgrade ASA 5500 firewall, Network Technologies and Trends, Networking, show ver | include RAM, things to be considered - Series 1

When it comes to upgrade an ASA 5500 Series firewall from 8.2 version to 8.3 or so, many things comes into the picture.  Recently we upgraded our ASA 5540 Firewall from the IOS version 8.2.1 to 8.4.6. I would like to share the details about the upgrade. Stating IOS version 8.3 and later there...


July 15, 2013  6:58 AM

A review for CCIE Routing and Switching Certification Guide (4th Edition)



Posted by: Yasir Irfan
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When it comes to CCIE Routing and Switching Written Exam you need to study lots of books especially the titles published from Cisco Press. As we all know CCIE Routing and Switching is not an easy task, it needs lots of preparation. Since I am in the process of perusing CCIE Routing and Switching I...


July 13, 2013  8:38 AM

Cisco announces new Nexus 7700 Series Switches



Posted by: Yasir Irfan
Cisco, Cisco Systems, Data Center, Network Technologies and Trends, Networking, Switches

Cisco Live was recently concluded in Orlando, Florida where Cisco announced the new top-end Nexus 7700 switches with new ASICS which is capable of...


July 9, 2013  6:51 AM

Cisco IP Source Guard stops PXE boot, especially when using Windows Deployment Services Server



Posted by: Yasir Irfan
Cisco Systems, Cisco Tips, CSCts44728, Network Technologies and Trends, Networking, Switches, Windows Deployment Services Server

In my previous post we saw how to overcome the Cisco NAC restrictions for the Windows Deployment Services Server, as we...


July 4, 2013  8:13 AM

How to integrate Windows Deployment Services Server with a typical Cisco Networking devices – Series 3



Posted by: Yasir Irfan
Cisco, Cisco Systems, Cisco Tips, Microsoft, Network Technologies and Trends, Networking, Windows 2008 Server

Let’s continue to with rest of the steps to allow Windows Deployment Services Server through a Cisco NAC. Step 5 Click Add Polices   Bookmark and Share     0 Comments     RSS Feed     Email a friend


July 1, 2013  7:05 PM

How to integrate Windows Deployment Services Server with a typical Cisco Networking devices – Series 1



Posted by: Yasir Irfan
Cisco, Cisco Systems, Cisco Tips, Network Technologies and Trends, Networking, Switches

Recently we tried to deploy Windows Deployment Services Server in our environment, to enable the deployment of Windows operating systems over the network for our workstations, so that our technical support team do not have to install each operating system directly from a CD or DVD. Our Windows...


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