All Entries in the "IT News" Category
Cisco quits WiMax radio business
WiMAX, meaning Worldwide Interoperability for Microwave Access, is a telecommunications technology that provides wireless transmission of data using a variety of transmission modes, from point-to-multipoint links to portable and fully mobile internet access. The technology provides up to 10 Mbps broadband speed without the need for cables. The technology is based on the IEEE 802.16 standard (also called Broadband Wireless Access).
The bandwidth and range of WiMAX make it suitable for the following potential applications:
* Connecting Wi-Fi hotspots to the Internet.
* Providing a wireless alternative to cable and DSL for “last mile” broadband access.
* Providing data, telecommunications and IPTV services (triple play).
* Providing a source of Internet connectivity as part of a business continuity plan. That is, if a business has both a fixed and a wireless Internet connection, especially from unrelated providers, they are unlikely to be affected by the same service outage.
* Providing portable connectivity.
Quoting NetworkWorld.com:
“Cisco Systems will stop developing and making WiMax base stations to concentrate on the IP (Internet Protocol) networks that sit behind them.
Cisco acquired Navini Networks, which made WiMax RAN (radio access network) equipment, in 2007. The dominant IP networking company said at the time that it saw a powerful opportunity to bring broadband Internet access to developing countries through WiMax.
However, despite hitting the market first, WiMax has taken a back seat to LTE (Long-Term Evolution) as a 4G (fourth-generation) mobile technology. LTE is backed by the industry body behind GSM (Global System for Mobile Communications) and is on the road maps of most major carriers that have chosen a 4G system. In the U.S., Verizon Wireless plans to launch LTE commercially this year and AT&T will follow next year. ”
Read the full article on NetworkWorld.com…
Popularity: 16% [?]
IP Multicast Gotchas
Denise Fishburne discusses repeat problems in IP Multicast. Learn about the foundation protocols of Multicast and Cisco Press’ Multicast Video Mentor.
Excellent presentation. Exactly like she said, for many of network engineers, even for those with a lot of knowledge and experience, Multicast is the “big bad wolf”.
Source: InformIT
Popularity: 4% [?]
SolarWinds: free network config generator
A few days ago I received a notification from SolarWinds that they released a free Network Config Generator software and I was invited to download and test it.
I give it a try and even if I’m more used to the old plain text files with configuration template, this software was a pleasant surprise. I recommend it especially for those how are new in business and are beginners with Cisco devices. This software can get you out from some troubles when you are configuring Cisco platforms.
I had the idea to make a video tutorial about how to use it, but then I found the 2 videos below created by SolarWinds which give you an overview about this software and then a short how-to use it:
And the how to guide:
Popularity: 5% [?]
Riverbed releases gigabit-speed WAN optimizer
Riverbed Technology Inc. today released two new models of its WAN optimization engine, the Steelhead appliance, which can now achieve network throughput speeds of up to 1Gbit/sec. over Ethernet or OC-12 connections.
The new appliance, the Steelhead 7050-L (low) and 7050-M (medium), are the first to use solid-state drives (SSD) instead of hard disk drives and offer larger memory configurations — 32GB/48GB of memory — than previous models. The appliances are aimed at backup consolidation for disaster recovery and business continuity.
10 Gigabit Ethernet Virtual Data Center Architectures: Download now
“This is the first WAN optimization product built on SSD, which enables faster read/write speeds,” said Nik Roudam, director of product marketing at Riverbed.
The appliances also support 10Gbit/sec. Ethernet for appliance clustering or for fail-over purposes. Up to 25 appliances can be clustered together for a total of 12GB/sec. throughput, according to Roudam.
The Steelhead 7050-L and 7050-M can be configured with 14 or 28 160GB SSD drives respectively, and two hard disk drives, which act as logging disks.
Read more details analysis of the new products on NetworkWorld.com…
Popularity: 1% [?]
