A key to the success of MPLS and the L3 MPLS VPN is the use of “tunnels” created by the MPLS labeling. Tunnelling in the service provider cloud has many benefits:
- Only edge points (ingress and egress) need to understand the meaning of the inner network information (prefixes); core routers simply switch traffic based on labels
- You can easily re-direct tunnel traffic explicitely
- Tunnels can be created within tunnels
- The tunnel is less prone to data spoofing
- The overhead with MPLS is relatively low (4 bytes per MPLS header)
Examine the Exhibit as we review some of the additional, key components of the L3 MPLS VPN:
Notice how edge routers are known as Label Edge Routers (LERs) or Provider Edge Routers (PEs). Routers in the core of the provider network are called Label Switching Routers (LSRs) or Provider (P) routers. Label Switched Paths (LSPs) represent the path traffic takes through the provider MPLS network. All of the traffic that is to be forwarded using the same path is known as the Forwarding Equivalence Class (FEC). All of this traffic is forwarded with the same MPLS label. In the simple case of the Routing and Switching CCIE Exam, the FEC typically consists of all packets with a destination address of the BGP next-hop.
Notice how the network is a thing of beauty for the Label Switching Routers (LSRs)/Provider (P) routers, especially when you consider scalability. The service provider can add more customers and introduce many more network prefixes into its infrastructure, but these prefixes only need to exist on Label (Provider) Edge Routers (LERs/PERs). These edge devices are the “workhorses” of the provider network. Notice among many jobs, it is their responsibility to identify the Label Switched Path (LSP) that the packet is destined for.
Customer networks consist of Customer Edge routers (CEs) and Customer (C) routers. These devices need no knowledge whatsoever about MPLS. They can be completely oblivious to the fact they are interacting with a structure that uses MPLS as its basis for forwarding traffic.
In order to master MPLS for the CCIE R&S written and lab exam, this is the first of the terminology we must commit to memory regarding MPLS. Please join me for future posts in this series.
About US
Network Bulls is Best Institute for Cisco CCNA, CCNA Security, CCNA Voice, CCNP, CCNP Security, CCNP Voice, CCIP, CCIE RS, CCIE Security Version 4 and CCIE Voice Certification courses in India. Network Bulls is a complete Cisco Certification Training and Course Coaching Institute in Gurgaon/Delhi NCR region in India. Network Bulls has Biggest Cisco Training labs in India. Network Bulls offers all Cisco courses on Real Cisco Devices. Network Bulls has Biggest Team of CCIE Trainers in North India, with more than 90% of passing rate in First Attempt for CCIE Security Version 4 candidates.
- Biggest Cisco Training Labs in India
- More than 90% Passing Rate in First Attempt
- CCIE Certified Trainers for All courses
- 24x7 Lab Facility
- 100% Job Guaranteed Courses
- Awarded as Best Network Security Institute in 2011 by Times
- Only Institute in India, to provide CCIE Security Version 4.0 Training
- CCIE Security Version 4 Training available
- Latest equipments available for CCIE Security Version 4
Network Bulls Institute Gurgaon
Network Bulls Institute in Gurgaon is one of the best Cisco Certifications Training Centers in India. Network Bulls has Biggest Networking Training and Networking courses labs in North India. Network Bulls is offering Cisco Training courses on real Cisco Routers and Switches. Labs of Network Bulls Institute are 24x7 Available. There are many coaching Centers in Delhi, Gurgaon, Chandigarh, Jaipur, Surat, Mumbai, Bangalore, Hyderabad and Chennai, who are offering Cisco courses, but very few institutes out of that big list are offering Cisco Networking Training on real Cisco devices, with Live Projects. Network Bulls is not just an institute. Network Bulls is a Networking and Network Security Training and consultancy company, which is offering Cisco certifications Training as well support too. NB is awarded in January 2012, by Times, as Best Network Security and Cisco Training Institute for the year 2011. Network Bulls is also offering Summer Training in Gurgaon and Delhi. Network Bulls has collaboration with IT companies, from which Network Bulls is offering Networking courses in Summer Training and Industrial Training of Btech BE BCA MCA students on real Live projects. Job Oriented Training and Industrial Training on Live projects is also offered by network bulls in Gurgaon and Delhi NCR region. Network Bulls is also providing Cisco Networking Trainings to Corporates of Delhi, Gurgaon, bangalore, Jaipur, Nigeria, Chandigarh, Mohali, Haryana, Punjab, Bhiwani, Ambala, Chennai, Hyderabad.
Cisco Certification Exams are also conducted by Network Bulls in its Gurgaon Branch.
Network Bulls don't provide any Cisco CCNA, CCNP simulations for practice. They Provide High End Trainings on Real topologies for high tech troubleshooting on real Networks. There is a list of Top and best Training Institutes in India, which are providing CCNA and CCNP courses, but NB has a different image from market. Many students has given me their feedbacks and reviews about Network bulls Institute, but there were no complaints about any fraud from this institute. Network Bulls is such a wonderful place to get trained from Industry expert Trainers, under guidance of CCIE Certified Engineers.
About Blog
This Blog Contains Links shared by sites: Cisco Guides, Dumps collection, Exam collection, Career Cert, Ketam Mehta, GodsComp.co.cc.
Cisco Training in Delhi
ccna training in gurgaon. ccnp course institute in gurgaon, ccie coaching and bootcamp training near gurgaon and delhi. best institute of ccna course in delhi gurgaon india. network bulls provides ccna,ccnp,ccsp,ccie course training in gurgaon, new delhi and india. ccsp training new delhi, ccie security bootcamp in delhi.
Testimonials : Network Bulls
My Name is Rohit Sharma and i Have done CCNA and CCNP Training in Gurgaon Center of Network Bulls and it was a great experience for me to study in Network Bulls.
Cisco Networking Certifications
Myself Komal Verma and i took CCSP Training from Network Bulls in Gurgaon. The day i joined Network Bulls, the day i get addicted with Networking Technologies and I thank Mr. Vikas Sheokand for this wonderful session of Networking. :)
I must say that Network Bulls is Best Institute of CCNA CCNP CCSP CCIE Course Training in Gurgaon, New Delhi and in India too.
Komal Verma
About a wonderfull CCIE Training Institute in Gurgaon
I am Kiran shah from New Delhi. I have recently completed my CCNA CCNP & CCIE Training in Gurgaon from Network Bulls and i recommend Network Bulls for Cisco Training in India.
Kiran Shah
Cisco Coaching and Learning Center
Disclaimer: This site does not store any files on its server. I only index and link to content provided by other sites. If you see any file on server that is against copy right you can inform me at (sidd12341 [at] gmail.com). I will delete that materials within two days. This Website is not official Website of any Institute like INE, Network Bulls, IP Expert. Thanks
CCIE Security Version 4
Cisco Finally updated CCIE Security Lab exam blueprint. WSA Ironport and ISE devices are added in CCIE Security Version 4 Lab Exam Syllabus Blueprint. In Updated CCIE Security Version 4 Syllabus blueprint, new technologies like Mobile Security, VoIP Security and IPV6 Security along with Network Security, are added. As in CCIE Security Version 3 blueprint, Cisco had focused on Network Security only, but now as per market demand, Cisco is looking forward to produce Internet gear Security Engineer, not only Network Security engineers.
In CCIE Security Version 4 Bluerpint, Lab Exam is going to be more interested than before. What is Difference in CCIE Security Version 3 and Version 4? Just go through the CCIE Security Version 4 Lab Equipment and Lab Exam Syllabus Blueprints and find out!
0 comments:
Post a Comment