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May 6, 2013  4:59 AM

How to preserve encapsulation across SPAN?



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

While any one of you are trying to analyze a SPAN or RSPAN traffic you may notice that certain layer 2 frames are missing. Usually SPAN/RSPAN ignores layer 2 traffic like CDP, spanning-tree BPUDs, VTP, DTP and PagP frames.  However, these traffic types can be forwarded along with the normal SPAN...

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April 17, 2012  5:38 AM

Data Center Security Policies and Procedures – part2



Posted by: Yasir Irfan
Authorized Access List, computer hardware, Data Center, Data Center access, Data Center Physical security policy, Data Center Security Policies and Practices, Electro-magnetic devices, outsourced, Radioactive materials, Routers, SANs, security solutions, Servers farms, staff access contractors access, Switches, vendors

In my previous article we came across the Data Center physical security policy and procedures and now let's see the more about the access provided to Data Centers,...

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April 11, 2012  5:05 AM

Data Center Security Policies and Procedures – part1



Posted by: Yasir Irfan
computer hardware, Data Center, Data Center Physical security policy, Data Center Security Polices and Procedures, Data Center Security Policies and Practices, Electro-magnetic devices, levels of access, Radioactive materials, Routers, SANs, security solutions, Servers farms, Switches

Data Centers are heart for any organization; Data Centers are the one which houses the majority of Servers farms, Switches, routers, security solutions, SANs and much more. These days we were asked to develop the Security Polices and Procedures for our Data Centre which I am going to share in...

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September 19, 2011  5:45 AM

What is Universal Power over Ethernet (UPOE)?



Posted by: Yasir Irfan
60-watt Power over Ethernet technology, BT IP turrets, cabling infrastructure, Cat 5e, Cisco Access Point, Cisco Catalyst 4500E Switch, Cisco Switches, compact switches, IEEE, IEEE 802.3af standard, network access, OPOE, Oracle Sun ray clients, POE, Power over Ethernet, Samsung zero client desktop virtualization, single standard Ethernet cable, Switches, telepresence, UPOE technology, what is Cisco Universal Power over Ethernet, What is Universal Power over Ethernet

When it comes delivering power to Cisco Access Points and Cisco IP Phones we all know about the IEEE 802.3af standard which defines standard Power over Ethernet (PoE).  But what is Cisco Universal Power over Ethernet (UPOE)? This is new term for most of us. It's a new innovation from Cisco...

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August 27, 2011  10:22 AM

Cisco Introduces New Entry-Level Certifications – Series 3



Posted by: Yasir Irfan
640-692 RSTECH, 640-792 TPTECH, 640-893 DCTECH, CCT, Cisco CCT Data Center certification, Cisco CCT TelePresence certification, Cisco Certifications, Cisco Certified Technician, Cisco Command Line Interface (CLI) Cisco Command Line Interface (CLI) Tandberg, Cisco Learning Network Website, Cisco Routers, Cisco Switches, Cisco Systems, Cisco TelePresence operating modes, Data Center, hot-swap, MSD 9000, Nexus 2000, Nexus 5000, Nexus 7000, Routers, SAN Switches, Supporting Cisco Data Center System Devices v1.0, Supporting Cisco Routing & Switching Network Devices v1.0, Supporting Cisco TelePresence System Devices v1.0 Cisco CCT Telepresence Certification, Switches, TAC tickets, telepresence, Telepresence business, troubleshooting

After acquiring Tandberg, Cisco Systems made a significant progress in Telepresence business. Now Telepresence is not just a mere conferencing solution this technology is widely used in entertainment business as well. Look at its popularity it was a right move by Cisco Systems to introduce the...

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August 27, 2011  10:07 AM

Cisco Introduces New Entry-Level Certifications – Series 2



Posted by: Yasir Irfan
640-692 RSTECH, 640-893 DCTECH, CCT, Cisco CCT Data Center certification, Cisco CCT TelePresence certification, Cisco Certifications, Cisco Certified Technician, Cisco Learning Network Website, Cisco Routers, Cisco Switches, Cisco Systems, Data Center, hot-swap, MSD 9000, Nexus 2000, Nexus 5000, Nexus 7000, Routers, SAN Switches, Supporting Cisco Data Center System Devices v1.0, Supporting Cisco Routing & Switching Network Devices v1.0, Switches, TAC tickets, telepresence, troubleshooting

In my previous post I discussed about the introduction of Cisco Certified Technician...

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August 24, 2011  7:38 PM

Cisco Introduces New Entry-Level Certifications – Series 1



Posted by: Yasir Irfan
640-692 RSTECH, CCT, Cisco CCT Data Center certification, Cisco CCT TelePresence certification, Cisco Certifications, Cisco Certified Technician, Cisco Routers, Cisco Switches, Cisco Systems, Data Center, hot-swap, Routers, Supporting Cisco Routing & Switching Network Devices v1.0, Switches, TAC tickets, telepresence, troubleshooting

Yesterday a major announcement came out from Cisco Systems. It's about the introduction of Cisco Certified Technician (CCT) to its career Certification Program. So with an introduction of

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April 30, 2011  5:27 AM

Ten top popular and paying Cisco Certifications-part2



Posted by: Yasir Irfan
(CCIE R&S), AAA, ACL, advanced protocol handling, ASA products, CCDA, CCDP, CCNA Security, CCNA Voice, CCNP, CCNP Security, CCNP voice, Cisco ASA Specialist, Cisco Catalyst Switches, Cisco Certified Design Associate, Cisco Certified Design Professional, Cisco Certified Internetwork Expert Routing & Switching, Cisco Certified Network Professional, Cisco IP Telephony Design Specialist, Cisco network design concepts, Cisco Network Security Engineer, Cisco Routers, Cisco Unified Communications Manager, Cisco Unified Presence applications, Cisco Unity Connection, converged network infrastructure, Data Center, Designing and Networking, failover, gatekeepers, gateways, Global Knowledge, IP multicast, IP Phones, IP telephony, IT salary survey, LAN, network management, Networking devices, popular Cisco Certifications, QOS, remote access VPN, routed, secure socket layer VPN, Security, Security in Routers, Site-to-site vpns, switched network infrastructure, Switches, TechRepublic, voice applications, WAN

In my previous post we came to know five of the top ten Cisco Certifications which are not only popular but also they yield high remuneration. In this post we will discover...

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December 30, 2010  8:38 PM

What are key features and benefits NX-OS offers Series 2



Posted by: Yasir Irfan
128-bit Advanced Encryption Standard, Base Feature, BGP, Cisco Nexus 7000 Series Switches, Cisco Trustsec, Continuous system operation, CTS, data confidentiality, Data traffic, EIGRP, Enterprise Services Package, Etherchannel, GRE, IEEE 802.1AE link-layer cryptography, In-Service Software Upgrade, integrity, ISIS, key features and benefits NX-OS, Layer 2 protocols, Layer 3 protocols, MPLS, NX-OS, OTV, Policy based routing PIM, STP, Switches, VDC, Virtual Device Contexts, Virtual Port Channels (vPC)

In my previous post I did discussed about some of the key features of NX-OS lets see...

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December 30, 2010  8:35 PM

What are key features and benefits NX-OS offers Series 1



Posted by: Yasir Irfan
128-bit Advanced Encryption Standard, Cisco Nexus 7000 Series Switches, Continuous system operation, CTS, data confidentiality, Data traffic, Etherchannel, IEEE 802.1AE link-layer cryptography, In-Service Software Upgrade, integrity, key features and benefits NX-OS, STP, Switches, VDC, Virtual Device Contexts, Virtual Port Channels (vPC)

Apparently the NX-OS includes some quite interesting kef features and benefit. In this post I will try to highlight few of those features. Some of them are as follows

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