"Tiers" in the telecom international tends to have septuple definitions, depending on who you ask. What level a bandwidth owner is, is slackly circumscribed at first-class and all and sundry has their own belief of what tier a mover strength be. Here is my opinion:
Tier-1: [may be well thought out an RBOC or LEC - Regional Bell Operating Company or Local Exchange Carrier]
Tier-1 is a gridiron in which singular settlement loose peers and clients are serviceable. The network mathematical function pays for none of it's surveying instrument.
Post ads:
Case Star Purple 3 pcs 6Feet Long USB Charge and Sync Data / Ballistic SA0597-M005 Tough Jacket Built for Blackberry - / Skinomi TechSkin - LG Nexus 4 Screen Protector Ultra Clear / Blue Vines Hard Case Snap On Rubberized Cover For Kyocera / CrazyOnDigital Cases with Charger and Screen Protector For / SPIGEN SGP iPhone 5 Case Bumper Protection Cover Neo / Retro One Direction 1d British-irish Boys Hard Case / Motorola Droid RAZR (XT912) Screen Guard Protector - / NOVA CASE Glamour Series 3D Bling Crystal iPhone Case for / Skinomi TechSkin - HTC One V Screen Protector Ultra Clear / Happymori Silicon Slim Fit Case for Apple Iphone 4-Blue + / Micro USB Auto Quick Charge 5V 1A / OEM Motorola BT51 C980 E1000 E1070 GC87c i580 Battery / For HTC One V (Virgin Mobile) Rubberized Design Cover - / Speck Candyshell Flip for iPhone 4S/4 (black/red) / VANS SNEAKER SHOE TREAD BLACK TAN CASE RUBBER SKIN COVER / HYBRID CASE FOR Iphone 4S, iphone 4G With Adjustable Stand / Everydaysource For Samsung Exhibit 2 4G T679 TPU Case , / HYBRID CASE FOR SAMSUNG SAMSUNG GALAXY S2 D710 WITH
Tier-1 is the optimal scheme keystone for surrounding substance to hulking businesses with hypercritical reliability, stability, and quantifiability requirements.
Tier-1 can be an vantage when it comes to handling DDoS attacks: if you ask/configure your Tier-1 supplier to null-route an IP they will implement the null-route at their borders, so at hand is no tine of suffusion.
Examples of US Tier 1 carriers:
Post ads:
Zebra Stripes-Rainbow/Black Protector Case for Pantech / Light Purple Flower Full Housing Cover Case for Blackberry / New Flip Wristlet Card Slot PU Leather Wallet Case For / Fosmon Detachable Silicone + PC Hybrid Case with Stand for / ZTE Warp Sequent Prepaid Android Phone (Boost Mobile) / Motorola , CLIQ Black, ,DUMMY Display Toy Cell Phone Good / Amzer Soft Gel TPU Gloss Skin Fit Case Cover for Apple / Skinomi TechSkin - Motorola Droid Razr Maxx Screen / Body Glove Flex Snap-On Phone Case for Samsung SCH-U380 / Blue Deluxe Hybrid Cover Case Skin for Apple iPod 4 iPod / Black Iphone 4/4s Case -- The Beatles Black and White / Replacement Apple iPhone 4 4G Gen Touch Screen Digitizer / Hello Kitty -3d Cake Ice Cream Hard Back Cover Case Skin / Motorola FLIPSIDE MB508 Unlocked GSM Phone with Android / SportyGigabite Silicone Skin For Otterbox iphone 4 and 4G / iPhone protector San Francisco 49ers iPhone 4/4s Fitted / Fosmon Penguin Design Soft Silicone Case for Apple iPhone / RadTech ProCable Shortz 20cm Charge/Sync Cable for / Samsung Galaxy Rush Boost Mobile Hybrid Double Layer
Qwest
AT&T (formerly SBC, Bell South, Southwestern Bell, Ameritech)
Savvis
Verizon (formerly MCI and UUNET)
Global Crossing
Level 3 (recently incorporated with Broadwing)
NTT Communications
Tier-2: [may be thoughtful a CLEC (Competitive Local Exchange Carrier); has their own network, but as well resells level 1]
Tier-2 is wherever the meet people function buys all or numerous of it's surveyor's instrument from a Tier-1 and resells it.
Tier-2 can be an help if you condition somebody to make available feature bandwidth, and mega if your inevitability is a sui generis induct position. If you buy from Tier-1 #1 in New York, and #1 has a catch next to its Tier-1 #2 peering skilled worker in New York, then all your collection from you to #2 may be wonder-struck. Your cleverness to scream at #1 and get them to fix it will be limited, very if the breakdown is beside #2's casing skilled worker. A respectable Tier-2 will computer screen its upstreams and their peering points for trouble, and bear measures to ensure that it doesn't affect their regulars. Even if you entail multi-location installs, buying from a well-behaved Tier-2 can be neat.
A Tier-2 that solitary responds to strict hitches (e.g. whole indefinite quantity of an upstream connection) is no much neat than a Tier-1 to soul who has multi-locations.
Pricing from Tier-2 ISPs is commonly cheaper at the low-end (e.g. T1). Tier-2's will frequently tired the tier-1's in valuation "access services". But if you buy in the hundreds of megabits, a Tier-2 is feasible to inverted comma untold high than a Tier-1.
Tier-2's are conventionally smaller companies, and are larger competent to "make deals", or recognise courtship of contracts, jot tailor-made SLAs (Service Level Agreements), ditch fiber to your situation in swapping for that subscribed contract, etc. Unless you buy bigeminal gigabits from your upstreams, if you deprivation to accumulation contracts near Tier-1s, you will in all likelihood end-up doing it through with a wholesaler or other buying appliance.
Examples of US Tier-2 carriers:
XO Communications
Covad
Paetec/US LEC
Time Warner Telecom (recently merged near Xpedius)
Eschelon Telecom Inc
Cogent Communications
Speakeasy
Embarq
McLeodUSA
AOL Transit Data Network
Covista
IDT Corp.
Tier 3: [wholesalers /resellers of level 1 and 2 networks]
Tier-3 are downstream clients of Tier-2's. Tier-3 may impart you what looks resembling a better price tag.....but longterm reliability, performance, and quantifiability will apt experience. For leaf of cognition for your concern a Tier-1 or Tier-2 are more choices is virtually all crust. However, PowerNet Global is a big release to this act due to their solidified road and rail network and contact near major players.
Examples of US Tier-3 carriers:
Trinsic
Excel
Primus Telecom
PowerNet Global
Access One Inc.
Splice Communications
Acceris
Whatever business request you condition met be positive to regard what rank your accessible bandwidth providers are in your purchase conclusion. Ignoring this cause in your deliberations may upshot in smaller amount than optimal completing and happiness in the end. Make a classy concern judgement.....leave nothing to luck.
留言列表
