“Hi all, I have a 2960G 48 port switch here, I want to enable routing on this switch, but I can’t find how. I know this is normally is only a layer 2 switch, however since one of the latest…
A VSS is network system virtualization technology that pools multiple Cisco Catalyst 6500 Series Switches into one virtual switch, increasing operational efficiency, boosting nonstop communications, and scaling system bandwidth capacity to 1.4 Tbps. At the initial phase, a VSS will…
Here we go, with the configuration of DHCP snooping on a Cisco Switch. This feature protects the network by allowing the Cisco Switches to accept DHCP response message only from the authorized servers connected to the trusted interfaces in a…
DHCP snooping is a security feature intended to prevent rogue DHCP server from sending malicious DHCP replies. When DHCP snooping is enabled, the switch intercept all the DHCP requests, and discards DHCP replies coming from “untrusted” ports. The offending switch…
Cisco and VMware have expanded their strategic relationship to offer integrated products for cloud infrastructures and solutions aimed at delivering the software defined data center. That was a popular topic during the morning keynote session with the introduction of vCloud…
Cisco announced the end-of-sale and end-of-life dates for the Cisco Catalyst 3750G, 3560G, 3750-E, and 3560-E Series Switches. The official end of sale date is January 30, 2013. As is tradition, support will be provided for 5 years following the…
What is a VLAN Trunking Protocol (VTP)? “VTP allows a network manager to configure a switch so that it will propagate VLAN configurations to other switches in the network” VLAN Trunking Protocol (VTP) is a Cisco proprietary Layer 2 messaging…
The private-VLAN feature addresses two problems that service providers face when using VLANs: 1. Scalability: The switch supports up to 1005 active VLANs. If a service provider assigns one VLAN per customer, this limits the numbers of customers that the…
Cisco Products reach the end of their Product Life Cycle for a number of reasons. These reasons may be due to market demands, technology innovation and development driving changes in the products, or the products simply mature over time and…
If you are used to working with home networking gear, you will be used to an integrated device that “does it all”. On a home network, you may have one box that is a cable/DSL modem, router, firewall, switch, and…
Your network grinds to a screeching halt. All the switch port lights are solid, and your only theory is that the network is under attack. What do you do? Question: “I have 3 cisco switches, each 48 ports. How do…
Cisco unveiled its strategy for delivering software-defined networking, describing its Open Network Environment Platform Kit (onePK) as a more comprehensive approach than the OpenFlow protocol or the OpenStack approaches by others. The ambitious Cisco Open Network Environment package, introduced at…
While many of you may be familiar with Cisco router upgrades, upgrading the IOS on a Catalyst 2950 switch is different. It uses a few different commands, and the IOS and other files come compressed in a .tar file. Let’s…
The Cisco Nexus core switching system is taking the datacenter by storm, and there are good reasons why IT professionals are making it the heart of their server and storage systems. The transition to densely virtualized servers with rapid access…
The Cisco new ASR 5500 is a high-performance box “for the next decade” that will support large volumes of mobile and M2M traffic. Cisco Systems wants to make it easier for mobile operators to scale up the wired networks that…
Most network switches used by small businesses and home offices typically require no configuration — they’re “plug and play.” However, it’s important to remember that plug and play doesn’t always work. In addition, these switches certainly don’t offer any troubleshooting, logging, security,…
Interface configuration is one of the most important configurations of the switch. Without interfaces, the switch is useless. Interface configurations must be exact to be able to communicate with other devices. Interface configuration will be presented for three different devices…
Cisco 3560 Series, fixed configuration Enterprise class switch with PoE functionality in Fast and Gigabit Ethernet configurations, is intended to provide high-performance network switching while reducing power consumption relative to previous Cisco switches for use in corporate networks. It could…
The Cisco Catalyst 4500 Series is a mid-range modular switch series that offers non-blocking layer 2 through layer 4 switching capabilities for enterprise, small and medium-sized business (SMB) and metropolitan (metro) Ethernet customers. A Cisco Catalyst 4500 comprises a chassis,…
If you have more than a couple of switches, configuring VLAN’s can be a real pain. To make it easier, Cisco developed VLAN Trunking Protocol (VTP). Now, let’s find out what VTP can do for you. If you have 20…
When I heard of the LAN and VLAN for the first time, I have nothing idea about it. What is it, and how is it used for? … So many doubts need to be dealt with. Have you ever wondered…
“What differences btw catalyst 4500 and 6500 series? Our company is looking to get a new switch for or core/OC. The switch being replaced is an Enterasys matrix, I don’t know which model, but is very old, and all servers…