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Posts Tagged ‘switches’

Product of the Month: the Cisco WS-F6700-DFC3CXL

Tuesday, January 19th, 2010

Every month we pick a component to focus on and this month, to start the new year out, we’ve chosen the Cisco WS-F6700-DFC3CXL. Why do we love this product? This distributed forwarding card increases your switching performance considerably and comes with the WS-X6708-10G-3CXL.  With a whopping  1,000,000 IPv4 routes and 256,000 NetFlow entries, it will undoubtedly be a significant asset to your system’s scalability. The WS-F6700-DFC3CXL comes with 1 GB DRAM of default memory too!

The WS-F6700-DFC3CXL isn’t the only daughter card option. The Cisco WS-F6700-DFC3A, WS-F6700-DFC3B, WS-F6700-DFC3BXL,  and WS-F6700-DFC3C are also available to give that system a boost, but the WS-F6700-DFC3XL is the grand-daddy, or perhaps grand-daughter, of daughter card options as the WS-F6700-DFC3C offers only 128,000 IPv6 routes compared to the WS-F6700-DFC3XL’s 500,000.

As a replacement part for the now obsolete WS-F6700-DFC3A, the Catalyst 6500 Distributed Forwarding Card-3CXL for WS-X67xx is a great investment for the future.

What is a Distributed Forwarding Card (DFC)?

Wednesday, January 13th, 2010

A DFC is installed in DFC-enabled line-card modules to perform distributed forwarding supported by the  Supervisor Engine. When the Distributed Forwarding Card is installed, line cards that are DFC-enabled make forwarding decisions locally, leaving the supervisor engine free to perform routing and management functions.  This increases your overall performance and scalability. The Distributed Forwarding Card replicates Layer 2 and 3 forwarding logic in hardware as well as a bus on each line card as well.

For example, the 8-port 10GbE module WS-X6708-10G-3C has 40 Gbps connection to the fabric and can demonstrate up to 64 Gbps local switching. The distributed forwarding card (DFC) can forward traffic at 48 Mpps enhancing the module’s speed and performance.

Often, these are field upgradeable.

What Do You Know about Nortel?

Saturday, October 17th, 2009

Currently doing business in more than 150 countries, Nortel has successfully been delivering communications capabilities since 1895.  Located in Toronto, Canada, Nortel originally came to be as Northern Electric and Manufacturing, a company designed to supply telecommunications equipment for Canada’s fledgling telephone system. Over the last one hundred years, Nortel has emerged as a global leader in the ability to deliver communications capabilities that lead the industry in security protection, global commerce, and cutting edge technology.

Nortel offers a variety of communications project to help service providers, enterprise branches, and small businesses tap into the benefits of today’s technology including: routers, switches, digital telephony, system security including firewalls and VPN, WiMAX, routers, and much more.

As the pioneer of the 40G network, Nortel has developed ways to utilize your existing network and optical fibers and yet effectively revamp your current hardware so that it’s ready to make the jump to four times the capacity. With customers’ growing needs in mind, Nortel hardware is versatile and has the hard-earned reputation of being a quality investment.

Networking 101: What is Fast Ethernet?

Monday, July 20th, 2009

When it comes to computer networking, the speed that information can be carried is integral to understanding how powerful (or powerless) a network is. Before Fast Ethernet came about, the original ethernet speed was 10 Mbit/second. Fast Ethernet carries traffic at 100 Mbit/second. How does it do this? It does it by following several 100-megabit Ethernet standards including specific hardware like 100baseTX which is one of the most commonly supported by the majority of Ethernet hardware being produced today. The ‘T’ in 100baseTX stands for “Twisted” Pair Copper.

Full duplex fast Ethernet is at times, referred to as “200 Mbit/s.” This, however, is misleading because that level of enhanced speed can only be achieved if traffic patterns are symmetrical. Introduced in 1995, Fast Ethernet remained the fastest version of Ethernet for only three years. In 1998, it was superseded by gigabit Ethernet.

Early on, before even the 10 Mbit Ethernet, coaxial cables were used and are now, for the most part, obsolete. Ethernet, the original 10 Mbit Ethernet came next, then the 100 Mbit/second Fast Ethernet. As the need for faster and more advanced systems arose, the Gigabit Ethernet came next, followed by the 10-Gigabit Ethernet. Currently, there is 100-Gigabit Ethernet being developed but as of the date this article was published, it is not yet ready.

Highly functioning switches such as the Cisco WS-C2960G-24TC-L Catalyst Gigabit Switch are designed to be significantly more powerful than predecessors. An ethernet switch of this caliber has the ability to deliver intelligent services for the network edge as well as offer integrated security and network admission control in a way that ethernet and fast ethernet switches cannot.

Today’s Ethernet has many varieties. They vary in speed as well as physical medium used. The most common forms now used are 10BASE-T, 100BASE-TX, and 1000BASE-T. All three of these utilize twisted pair cables along with 8P8C modular connectors (often referred to as RJ45 connectors). The numbers in their names refer to the number of Mbit/s. A 10BASE-T runs at 10 Mbit/s, a 100BASE-TX runs at 100 Mbit/s, and a 1000BASE-T runs at 1 Gbit/s.

Overview of the Cisco NX-OS

Monday, June 29th, 2009

The Cisco NX-OS is a recently-developed data-center-class OS built to meet the evolving demands of the virtualized data center. NX-OS 4.1 designed for Nexus 7000 maintains necessary consistency with the other members of the Cisco Nexus family while also delivering features critical to data centers. These features include continuous system availability; a modular, flexible architecture; and switch virtualization capabilities.

There are several advantages to the NX-OS. They include: a flexible and scalable core built with virtualization, modularity, and resiliency; a unified data center operating system that runs on a multitude of the Cisco Nexus Switches including the the 7000 Series, 5000 Series, MDS Series Multilayer SAN, and the Cisco Nexus 1000V virtual switch for VMware ESX; comprehensive security features; management features that meet challenges imposed by extremely demanding environments; robust feature set with a large variety of Cisco innovations; and the ability to support cutting-edge implementations of IPv4 and IPv6 services.

The Cisco NX-OS is highly secure. The operating system provides unmatched data confidentiality and integrity, while supporting standard IEEE 802.1AE link-layer cryptography. Upgrades,
maintenance, and software certification is a seamless process which can be performed without any service interruptions. The Cisco ASA-5500 series, although it doesn’t offer NX-OS, is the core of Cisco’s self-defending network and offers many of the same protections as the NX-OS.

Cisco: The Leader in PoE Technology

Friday, June 19th, 2009

Power over Ethernet (PoE) was developed by Cisco Systems, an industry leader in the field of technology and networking hardware. Also sometimes referred to as ‘inline power,’ PoE is the ability that a LAN switching infrastructure can provide power to an endpoint, or ‘Powered Device,’ by utilizing a copper Ethernet cable. Cisco first delivered the capability in 2000 to address the needs of emerging IP Telephony deployments. Because IP (Internet Protocol) Telephones need power to operate, their deployment is simplified by combining power and data transfer in a single cable.

Cisco then began using the technology in other applications– particularly to power devices in atmospheres or locations where there was limited or no local power access. Other companies quickly caught on, seeing the importance of such a discovery in the technology field and a standardization of PoE (802.3af) came about, allowing for a newly formed generation of network-attached devices like card scanners, video cameras, POS devices, and much more.

Cisco now offers a complete range of 802.3af-based Power over Ethernet support in all members of its Catalyst Intelligent Switch families with both 10/100 PoE LAN and 10/100/1000 connections, including Catalyst 6500– a 96-port 10/100 PoE module.

In addition, Cisco subsequently introduced 802.3af compliant PoE products that also support their pre-standard PoE implementation. These products are backwards compatible with the company’s existing end devices, including Wireless access points and IP Telephony products. The Cisco Catalyst Intelligent Switches reliably deliver Intelligent Power Management capabilities beyond the optional IEEE Power Classification feature. These Switches enable granular, optimized and scalable power delivery to provide more efficient power management, keeping Cisco’s reputation as the leader in Power over Ethernet Technology warranted.

The History of PoE (Power over Ethernet)

Tuesday, June 16th, 2009

PoE, or Power over Ethernet, is a technology that describes a system to transfer both electrical power and data to remove devices using standard twisted-pair cable in an Ethernet network. In many circumstances, supplying power separately is infeasible, expensive, or just plain inconvenient, and a switch module that offers PoE enhances a network’s versatility and makes it more attractive to network administrators. A good comparison is POTS telephones. Like a network with PoE, POTS telephones are analog, but receiver data and power through the same cable. You may also hear PoE referred to as ‘inline power.’

Power over Ethernet is useful for powering embedded computers,wireless LAN access points,IP telephones, remote network switches, and network cameras as well as other I.T. hardware that needs power. PoE is typically implemented following the specification guidelines in IEEE std. 802.3af-2003.

Industry leader Cisco Systems is the father of original PoE equipment. Cisco was manufacturing components with inline power several years before an IEEE standard for delivering PoE came to be. With a capability of delivering up to 10 Watts per port, Cisco PoE forerunners ensured the amount of power to be delivered was negotiated between the endpoint and the Cisco switch. This was based on a power value added to the CDP, or Cisco proprietary Cisco Discovery Protocol. But CDP does even more. It’s responsible for communicating the Voice VLAN value from the Cisco switch to the Cisco IP Phone as well.

Now, you will find many products on the market that offer PoE. Cisco is still providing hardware on the cutting edge of this technology with products like PWR-C45-1300ACV and PWR-C45-4200ACV.

A Matter of Trust

Monday, March 2nd, 2009

A Matter of Trust

Any business relationship is built fundamentally on trust. If you don’t trust the company you’re dealing with, you shouldn’t be dealing with them. And the notion couldn’t be more telling than when it comes to buying refurbished hardware. After all, you need your hardware to work and work well, you need it to be delivered on the day promised, and most importantly, you need to know that if something goes wrong with that router, or switch, or IP Phone, the company you bought it from will stand behind the product and replace it. In short, you have to trust that if you buy their product, they won’t leave you twisting in the wind.

The primary reason companies don’t buy used IT hardware, according to a survey conducted by Information Week, is because they don’t trust that it will work as well, or last as long as new products will. A lack of trust was the number one reason people throw thousands of dollars away every year on buying new equipment when the exact same product is available used. That’s how important ‘trust’ is.

So why trust us?

Here at MULTI-LINK, we’re worthy of your trust.

First, we’ve been in business since 1995. That’s almost fifteen years and we’ll be here for fifteen more. Without repeat business by customers who’ve had a positive experience with us, we couldn’t have made it this far.

Second, we work with the manufacturer’s biggest customers. Even companies that primarily buy direct from manufacturers like Foundry and Cisco come to us when in need of a secondary or alternative supplier. Sometimes the items they need are no longer being made or are available from the manufacturer. Other times, we can simply ship immediately when the manufacturer has a 6 – 8 week lead time. These companies frequently come back to us time and again.

Third, we stand by our equipment. Our rigorous testing standards and one-year warranty ensure that if something goes wrong—and we all know that on occasion it will—we won’t pretend we don’t know who you are. And we won’t hide behind a ‘Contact Us’ that’s devoid of a phone number. You can call us, email us, chat with us. We’re there to help because your problem is our problem.

Fourth, we’re big enough to deliver what we say we can. Although other companies may have good intentions, can they really swoop in when equipment fails and replace it quickly? We can. We maintain one of the largest on-site inventories of refurbished equipment in the nation and we can ship immediately.

One of our customers said it best:

“There is one and only one reason why we buy from MULTI-LINK – it’s called trust. Buying second user equipment can offer significant savings… if the gear you get arrives in a timely manner, if it is what you wanted, if it is cosmetically correct, if it actually works as specified, and if you get support when it doesn’t. Too many “ifs”, which is why we take no chances and we always try to work with people we trust. MULTI-LINK has rated #1 with us in this department for longer than ten years, and they are currently our only ISO9001-approved second user kit vendor. Any other vendors need to be approved one-by-one, deal-by-deal, before any orders are placed… with fingers crossed.”

It’s praise we’re proud of, and it’s praise we’ve earned. We’re looking forward to earning your trust too.

Is Your Company Out Growing its IT Equipment?

Thursday, January 15th, 2009

Growth is good, but sometimes it happens more quickly than we expect causing all kinds of problems.  If you suddenly have more orders than you’re equipped to handle, it’s likely you’ll encounter issues with lead times, personnel, and even your IT equipment.  Because sudden growth is often a reaction to external circumstances going on in the market and outside of your control, it may catch you off guard.  Upgrading could be the key to handling the additional orders quickly and efficiently.

The first thing you need to do in this situation is hire additional staff to manage the extra workload. Because you’re playing ‘catch up,’ we suggest hiring a temp that’s available for hire in case you decide that this growth spurt is a long term trend.  Not all companies allow you to hire their temps.  Others charge outrageous fees – and the employee you’re hiring doesn’t see a penny of that.  Be sure to check into this first before finding the personnel company you want to work with.

Second, if you can’t produce your product more quickly, spring for quicker shipping.  Don’t make your customers wait for you to produce the product they believe you have in stock, and then wait even longer for ground shipping.  Pay the difference for overnight shipping yourself.  The gain of a happy customer will far outweigh the nominal fee your shipping company will charge you to ship more quickly.

Third, upgrade your IT network.  More online sales are lost because of poorly designed websites and slow load times than anything else.  If they love your product, but hate dealing with your website, they’re gone.  Even if it means upgrading to refurbished IT equipment from the current equipment you bought new, it’s worth it to have the right hardware to handle your infrastructure.  Just be sure to find a reputable refurbished hardware company to work with.  How do you know if it’s reputable?  Easy.  Find a company that offers at least a six month warranty on used equipment (a one year warranty is even better), maintains its own inventory, offers a trade-in credit on the routers and switches you no longer need, and encourages you to call and speak to a customer service rep (some companies hide their phone number or take it off their site altogether to discourage you from talking to them – stay away from those).

Save Money by Selling Used Hardware

Friday, December 19th, 2008

You’ve just upgraded the hardware supporting your IT network, or you’re thinking about it, and your focus has been more on what to buy than the value of what you already own.  As you go through the process of upgrading, don’t forget that there’s probably someone out there who needs the very thing you’re ready to unload.  Why not save some money on your upgrade by selling off what you no longer need?

Upgrading to new hardware is expensive, but you can save more than just a few pennies by selling your old IT equipment like telephony, routers, switches, and PCs to a company that refurbishes and resells them.  Ideally, you should look for a company that sells both new and refurbished hardware.  That way, you’ll have more choices in your upgrade and be able to take advantage of any trade-in credit they might offer.  Additionally, a reputable company will test the used equipment it purchases multiple times and refurbish to factory standard.  Working with a company like this gives you, again, more options.  A combination of new and refurbished equipment can save you money especially if one of the components you need is on special.  Companies offer specials because of an inventory surplus, or because demand for that particular product is especially high and often offer these specials at up to 95% off the list price.  Even one piece bought on special combined with other new or refurbished components for your architecture can save you thousands of dollars.

If you’re simply looking to liquidate, it’s in your best interest to find the company that will offer you the most money for your IT hardware.  But again, be careful who you sell to.  Reputable companies tend to pay more quickly because they have the cash flow and they need your equipment to sell to another customer.  Less stable companies don’t, and you may have to wait a long time before you receive a check.  In addition, reputable companies, because of the volume of business they do, can often offer better deals on equipment purchases than others can.