When you configure a VLAN, you must assign it a number ID, and you can optionally give it a name. The purpose of VLAN implementations is to associate ports with particular VLANs. You configure the port to forward a frame…
“Hello, i am getting difficulty in the types of VLAN?? Please explain the following: How many types of VLAN are existing? Explain each type? Types of traffic VLAN can carry?” There are different types of VLANs. The type of network traffic…
Here we were asked to configure the Polycom device to have video conferencing with external world. Our Polycom device is behind a Cisco ASA 5540 firewall as shown in the below network layout. In order to permit H.323 video conferencing…
Version 9.0 of the Cisco ASA software has now been released. Here are some of the major features in the new release. Filter ICMP by ICMP code Clustering of multiple ASAs OSPFv3 and EIGRP support IPv6 support on outside interface…
DHCP snooping allows the switch to monitor and control DHCP messages received from untrusted devices connected to the switch. When DHCP snooping is enabled, the system builds and maintains a database of valid IP-address/MAC-address (IP-MAC) bindings called the DHCP snooping…
At the end of October, 2012, with the Halloween coming, Router-switch.com’s activities for its 10th anniversary ended. The celebration lasted for two months. It’s great. Thanks for all the participants, old and new customers. With your patience, support and enthusiasm,…
What is VTPv3? VTP version 3 is the third version of the VLAN trunk protocol and enhances its initial functions well beyond the handling of VLAN matters. There is a document at Cisco.com about VTPv3. Let’s dig into that. Features The…
The Spanning Tree Protocol (STP) is a network protocol that ensures a loop-free topology for any bridged Ethernet local area network. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them. Spanning…
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The Nexus switch line, including Nexus 5000 and Nexus 7000 switches, provides various features and capabilities configuring a Layer 2 network. In the chapter “Layer 2 Support and Configurations,” from the book NX-OS and Cisco Nexus Switching: Next-Generation Data Center Architectures by Kevin Corbin,…
It may often seem like nothing more than a sleek metal box on the outside, but the internal memory components of a Cisco router represent where much of the real magic takes place. Speak of a Cisco router is being…
Cisco has built a data-center-class network security portfolio, unveiling an Adaptive Security Appliance clustering feature that delivers 320 Gbps firewall performance, as well as a new virtual firewall and a super-capacity intrusion prevention appliance. Why Cisco ASA Clustering? With application…
Cisco and Arista Networks Inc. traded punches, both announcing new, ultra-low-latency top-of-rack switches that not only are fast, but pack many more features and functions than a typical switch in this class. The Arista 7150 is the first switch in the industry…
In today’s data center there are two major problems–space and power consumption. But networking vendors–Cisco–are not doing enough to make change. These vendors must rethink chip design and packaging in order to slash network power consumption. Cisco products, for example,…
OSPF (Open Shortest Path First) is a routing protocol developed by Internet Engineering Task Force (IETF). OSPF is standards-based which means it is available on routers by Cisco as well as other vendors, making it a vendor-neutral routing protocol. This…
Cisco extends its collaboration solutions suite for public, private and, clouds as well as brings WebEx to private cloud environments. Cisco is boosting its cloud-based colla Purchase levitra 20 mg boration solutions portfolio with with enhancements and additions for…
Cisco, a backer of the open source cloud computing project OpenStack, joins Red Hat, Rackspace and others in marketing own version of cloud management platform While hardware is at the core o cialis in uk f what Cisco does,…
Preface: Enhance the telephone user experience with high-fidelity wideband audio. The Cisco Unified IP Phone 7942G extends the functionality of the existing
With the importance of internet security being at the forefront of everyone’s mind these days, importance of keeping data safe while in transit is vital. There are of course a number of different technologies that are available to keep data…
Cisco announces the end-of-sale and end-of life dates for the Cisco Catalyst 6500 Series 48-Port 100BASE-X Ethernet Interface. The last day to order the affected product(s) is July 31, 2013. Customers with active service contracts will continue to receive support…
Router-switch.com, ten years old, happy birthday! 2012 marks the tenth anniversary of router-switch.com, which is an exciting moment for all router-switch’s staff and clients. What Router-switch.com Prepared for Its 10th Anniversary? Router-switch.com has become a world’s leading Cisco supplier over…
Cisco announces the end-of-sale and end-of life dates for the Cisco Catalyst 6500 Series Supervisor Engine 720-3B/3BXL Upgrades and Associated Bundles. The last day to order the affected product(s) is February 11, 2013. Customers with active service contracts will continue…