In This Issue: Cisco 3750G Series 24 Port PoE Gigabit Switch | What is DWDM? | News to Start Your Day
Today we’re celebrating a batter-dipped, deep-fried bite of deliciousness that runs rings around other appetizers! Any guesses?! It’s National Onion Ring Day! Head out to your favorite diner and order up some onion rings. Or make them at home! Here’s a delicious recipe to try!
The CK Daily – Beach Days and More Exploring
Happy Tuesday!
As I mentioned last week, I’m on vacation this week! We’re spending the week on Amelia Island and have been having a great time so far! We’ve taken advantage of the cool mornings to get out for a few runs/walks, and have spent the afternoons hanging out on the beach!
I’m normally someone who spends most of my time laying out on the beach, but we’ve had some great waves down here so we have spent a good bit of time out in the water boogie boarding. I haven’t really done that since I was a kid, and now I’m realizing I totally forgot how much fun that is! We hope to get in a few more good beach days, check out Cumberland Island, and maybe explore Little Talbot Island. Lots to look forward to! I hope you’re all having a great week!
Rebecca
Product Spotlights & Updates:
Happy Tuesday! We’ve got some pretty sweet Deals of the Week going on this week. Today, we’re highlighting the Cisco 3750G Series 24 Port PoE Gigabit Switch, WS-C3750G-24PS-S. The Cisco Catalyst 3750 Series of switches are excellent options for midsized and large offices alike.
These 3750G switches offer (24) or (48) 10/100/1000 Gigabit Ethernet ports plus 4 SFP ports. In addition, they include Cisco StackWise technology and allow users to stack up to 9 individual switches into one single logical unit. The unit comes with an IP Base image, Stacking capabilities, a POE budget of 370W, 128 MB of RAM, 32 MB of Flash, and has 1005 Total VLANs.
Grab one today for 10% off!
What is DWDM? – CK Learning Center
Fiber optics run the world. They’re deeply embedded in all of our communications at an infrastructural level. More than that, fiber optics consistently become more available and affordable for all aspects of networking. When you have to ensure the integrity of any network, you want to be certain you’re using the right tools for the job. The only way to gain that certainty is to have a deep understanding of what is available. Today, you can improve that understanding by learning about DWDM technology. It’s a vital form of fiber optic communications that is completely irreplaceable in many applications.
Dense wavelength division multiplexing (DWDM) is a breed of fiber optics that are specifically geared towards extremely data-intense operations. Meeting those data-intense needs is primarily accomplished through two facets of DWDM design.
For starters, this is multiplexed fiber optics. That means the cables are paired in a way that allows data to stream in two directions at the same time. In other words, any node on the network can send and receive information simultaneously.
Perhaps more important to defining DWDM is the nature of the dense wavelengths. A single cable can simultaneously run up to 192 (96 on older designs) distinct communication channels at once. Since each channel can carry up to 100 Gbps, this leads to an aggregate bandwidth of 19.2 Tbps.
DWDM creates this reality by using extremely tight wavelength spacing for each channel. Typical designs are built on either 0.4 nm or 0.8 nm spacing. Since each channel is secured to prevent cross-channel noise and interference, DWDM communications rely on precise laser signaling. This drives up the cost of producing DWDM systems.
How Does DWDM Compare to CWDM?
The other big player in multiplex fiber optics is CWDM. The C refers to a coarse wavelength spacing. This limits CWDM cables to a maximum of 10 Gbps and enables the designs to use less precise equipment. In short, CWDM has lower data capacities and costs less money. Choosing between the two will always be determined by the function of the network. There’s little reason to pay for DWDM capabilities unless they’re needed.
What Are Common Applications for DWDM?
Considering the extraordinary data density that DWDM can transmit, it is mostly used in applications that require it. The most common of these applications is telecommunications. Internet providers typically run DWDM in communication hubs.
Similarly, dense data centers often run on DWDM. While the aggregate data rates are important, the ability to run separate data formats and rates on each channel tremendously help data centers streamline their networks.
Cloud service providers are the other big user of DWDM. As you might imagine, enterprise cloud providers require the extraordinary bandwidth provided by dense fiber optics to meet demand.
In summary, DWDM is one of a large number of means to build a network. It offers some of the fastest data rates available today, and DWDM systems are integral to networking infrastructure. Understanding how it works, its capacity and its applications can help you better determine when and where you should consider DWDM systems of your own. If you need the level of capacity offered by dense wavelengths, you won’t have many alternative options.
This article is from the CK Learning Center. You can find it here.
Today’s News to Start Your Day:
- The European Court of Justice ruled that YouTube and other online platforms shouldn’t be held liable for copyright-infringing uploads in some cases. They could, however, be held liable if they are aware copyrighted content is available illegally and refrain from “expeditiously deleting it.”
- Chipotle Rewards will now be able to redeem their points for more rewards across its entire menu and more quickly. Restaurants are leaning on loyalty programs to hold onto the digital customers the companies gained during the pandemic.
- Target plans to make 100% of its private-label products environmentally sustainable by designing more durable items, eliminating waste, and encouraging reuse by 2040.
- Peloton just launched a corporate wellness program. Businesses that sign up will be able to offer employees subsidized access to Peloton’s digital fitness membership and its high-end cycles and treadmills.
- DoorDash is expanding its grocery delivery service. The company is partnering with Albertsons Cos. to offer on-demand grocery delivery from nearly 2,000 of its stores.