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Ason Technology And Network Evolution

Abstract ASON technology is the development of optical transport network a major breakthrough, the paper discusses the advantages of ASON networks as well as the relationship between SDH and OTN, ASON is discussed in detail the transmission plane, control plane, and network management features and progress of the plane, and finally for the optical transport network evolution strategy to the ASON may be analyzed.

  Keywords automatic switched optical network user network interface synchronous digital sequence quality of service

2000 years later, the optical transport network technologies there are new developments, mainly automatic switched optical network (AutomaticallySwitched OpticalNetwork, ASON) the emergence of its most prominent feature is the introduction of an independent transmission network intelligence control plane, control plane to complete the routing using automatic discovery, call connection management, protection and restoration, so as to implement the dynamic call connection to the network management.

ASON draws heavily on the exchange and data technology, to exchange, transfer and data in three areas has added a new intersection. Various manufacturers and operators of the technology have been given due attention. This will be the key technology and its progress ASON discussed in detail and based on current national transmission network operators, the characteristics of the technical evolution of the program may be discussed.

1 ASON technical characteristics 1.1 ASON advantages ASON is a service request initiated by the users, automatic routing, signaling control achieved by the connection establishment / removal, financial exchange and transfer as one of the next-generation optical network.

Combined with the domestic transmission network operator status, ASON technology can solve the transmission network into three major technical challenges faced:

(1) the issue quickly to provide circuit

ASON most important feature is to quickly provide the circuit, using a distributed control can provide orders of magnitude in the second end of the circuit, the rate for 155Mbit / s, 2.5Gbit / s and so on. Businesses reduce the time help operators gain more customers and profit.

(2) transmission circuit QoS issues Transmission circuit current level of basic services can not be developed in accordance with the appropriate tariff policy, resulting in waste of resources, and ASON on the circuit can easily divide the priority to provide a service level agreement (SLA) of transmission circuits.

(3) can provide fast protection and restoration

Mostly rely on existing transmission network SDH rings to be protected, but the circuit efficiency is low, only 50%, while on the cross-ring circuit can not be effectively protected. The ASON can effectively solve the circuit protection and restoration can be completed in the second magnitude, and the cost of spare circuit less resources, general resources for the work of the circuit for 30% to 60%, well below the SDH ring network.

1.2 ASON and SDH, OTN relationship

Automatically switched optical network is divided into transmission plane, control plane and management plane in three parts. Transmission plane including the exchange of entities from the transmission network composed of network elements, is the realization of the connection establishment / removal, exchange and transfer of the physical plane. The introduction of ASON control plane is different from the traditional transport network is a fundamental point, which includes a series of real-time signaling and protocol system to realize the connection establishment, release control and monitoring, maintenance and other functions, the signaling control plane network support. Management plane is the control plane and transmission of the management plane.

ASON control plane is suited to the OTN (optical transport network), also applies to SDH, the transmission network as a unified control plane. SDH, OTN and ASON in the relationship can be expressed in Figure 1.

Can be seen from Figure 1, a separate SDH / OTN and does not constitute ASON, to constitute the ASON must SDH / OTN + plane + next-generation network management control plane (management and control can also plane and the transmission plane), three are indispensable. SDH, OTN transmission plane only ASON technology, ASON and SDH, OTN and does not contain relations.

2 ASON Technical Development 2.1 Technology transfer plane As the current line rate

reached 1.6Tbit / s, line capacity issue has been resolved. Transmission plane sent the most prominent problem is the node that the transmission network in the optical / electrical cross-machine, optical / electrical cross-machine is the core of transmission plane, the size of its processing capacity related to the ASON throughput and processing power, particle size .

Wavelength cross-current to achieve high capacity in three ways: The first is the all-optical switching, the second is the use of O / E / O (optical / electrical / optical) processing to achieve, the third is the photoelectric hybrid method. All-optical methods due to its stability and fault detection and location problems, is still in the experimental stage, commercialization will take some time. The opto-electronic hybrid approach the challenges facing the same way with all-optical. Now it seems the use of optical / electrical / optical approach is the mainstream product, especially in SDH-based optical / electrical / optical cross-machine (can be cross-VC-4 level). With the advent of large-capacity cross-chip (currently single cross-chip can reach 160Gbit / s and above), the core cross-cutting capacity of Tbit / s is not very difficult. To the market has been commercial-oriented 1.28Tbit / s products as an example, assume that input and output ports of the processing rate of 10Gbit / s, the cross-matrix of size 128 × 128 should be more than the capacity of its external service access 1.28Tbit / s. This rate of capacity is appropriate for the current network, although route on the backbone WDM System is 32 × 10Gbit / s, but the actual with the wavelength is usually 4 to 8, assuming that each line has eight wavelengths need to be processed, the matrix can be cross-direction of the end of the 16 WDM line. Even for such a core transmission node Beijing, currently meet the requirements. Using optical / electrical / optical mode is a characteristic of other low-level VC can cross to achieve a low rate of integration and aggregation, network more easily.

Optical / electrical / optical methods can support high-capacity cross-Machine VC-4 and VC-4-Xc level crossing. In the external interface is generally 2.5 Gbit / s, 10Gbit / s, can be G.707 SDH interface or G.709 OTN interfaces. SDH interface supports 2 fiber, 4 fiber MS-Spring multiplex section protection ring. As the connection status monitoring by the sending side must initiate the connection point and end point detection signal quality; for SDH, OTN, you can use SDH, OTN overhead for performance monitoring and fault management, such as SDH monitoring bytes B1, J0 , control surfaces need

Networking is a Science ? Part 1

In Your Face!

Online networking works, but relationships are the most important part of the process. Using the Internet to exchange ideas, share knowledge and increase visibility will only become more essential in the coming years. Online networking is really catching on in business and professional circles.  However, face-to-face networking isn’t going away, but is augmented by its online brethren.

A key point to remember, face-to-face networking groups continue to expand. The huge growth of BNI (Business Network International (http://www.bni.com/) bears this out. Since the Internet first became popular in the mid 1990s, BNI has experienced more than a 1,000 percent growth rate.  This stat tells you that its here to stay.

Technology in this case is meant to provide opportunities to improve your networking efforts–not replace them.

People who understand this will use technology effectively to enhance relationships and make their network reach expand dramatically.

How to handle large crowds of people where you know No One!

Sooner or later in your business career you have to attend an event where you don’t know anyone, but you have to trade business cards and carry referrals.  Remember, the goal is to collect a business card and follow up at some point with this person for a sales/business opportunity.  Also you want to make enough of an impact that this person will recommend you in their circle.

Let us say you are at your local Chamber of Commerce, your industry conference, or other large organization where you need to connect with people but obviously you can’t do that with 300 or 400 people.  The first tip is “chunk it down”.

There are several hundred people there but they are mainly in groups of 2-5.

Be strategic.  Make sure you are clear why you are attending, what you want to get out of it, and most importantly what are the other attendees there for?  Second, practice how you will incorporate yourself into a group while there. In other words have an opening line.

For example, state your FULL NAME and your company.  Come up with several benefits and try them out one at a time.  For example I have been successful using “I am with an Internet company that specializes in partnering with media companies to use search to drive more online revenue.”  Not exceptionally creative but straight to the point in a room full of online publishers.

If you see someone alone approach them.  It is very likely they will be relieved that someone did.  Remember, face-to-face connections take a lot of time and effort so decide which will be ongoing personal versus electronic.  More on this point later.

Two Heads are Better Than One

Practice ahead of time.  Be on the same page and understand what each other’s opening pitch is.  Also stand in an “open position” with the other person.  Don’t close others off. Stand and talk to the other person, but face the room and not each other.  This way it’s an invitation to speak with someone who comes up or who is alone with no one to speak with.

Please Don’t Snub Me

None of us wants to be snubbed but unfortunately sooner or later we all are and we need to go on from it.  Luckily enough professional people are rarely rude to others for the simple reason it is not good business to gain that reputation.

When networking in business or in your personal life take the high road and simply excuse yourself and tell them to have a good day.

Must Do’s and Must Have’s

Always have enough business cards.  Don’t go running around just thrusting cards at people.  It is considered rude and bad form at best.  Have a conversation before EXCHANGING cards.  If they don’t have one, write down their email and phone.

Make note on the back of their card why you are getting back to them.

Invest in your own name tag if you are attending a number of functions frequently.  This way your name and company is clearly visible and spelled correctly.  You can purchase a name tag at Staples(http://www.staples.com/).

On the follow-up remember that you will have to remind them who you are, where you met, and why you are following up with them.

Don’t forget if you are connected with someone by a third party or referred by another person to thank the connector via personal touch (phone call, card, etc).

Referrals are and will be, for the foreseeable future, all about relationships. Whether they are relationships built online or face-to-face, they will still involve relationships. People refer people they know and trust. They will not regularly refer someone just because he or she is listed on a website. That’s called advertising, not networking.

Part II will be online networking.  Who to use and why.  How and when to use LinkedIn, Facebook, Twitter, etc.