The EIGRP Composite Metric – Part 1 ~ CCNP, CCSP and CCIE Security Version 4 Training Institute in India- Delhi

EIGRP for IP: Basic Operation and Configuration by Russ White and Alvaro Retana
I was able to grab an Amazon Kindle version for about $9, and EIGRP has always been one of my favorite protocols.
The text dives right in to none other than the composite metric of EIGRP and it brought a smile to my face as I thought about all of the misconceptions I had regarding this topic from early on in my Cisco studies. Let us review some key points regarding this metric and hopefully put some of your own misconceptions to rest.

While we are taught since CCNA days that the EIGRP metric consists of 5 possible components – BW, Delay, Load, Reliability, and MTU; we realize when we look at the actual formula for the metric computation, MTU is actually not part of the metric. Why have we been taught this then? Cisco indicates that MTU is used as a tie-breaker in a situation that might require it. To review the actual formula that is used to compute the metric, click here.
Notice from the formula that the K (constant values) impact which components of the metric are actually considered. By default K1 is set to 1 and K3 is set to 1 to ensure that Bandwidth and Delay are utilized in the calculation. If you wanted to make Bandwidth twice as significant in the calculation, you could set K1 to 2, as an example. The metric weights command is used for this manipulation. Note that it starts with a TOS parameter that should always be set to 0. Cisco never did fully implement this functionality.
The Bandwidth that effects the metric is taken from the bandwidth command used in interface configuration mode. Obviously, if you do not provide this value – the Cisco router will select a default based on the interface type.
The Delay value that effects the metric is taken from the delay command used in interface configuration mode. This value depends on the interface hardware type, e.g. it is lower for Ethernet but higher for Serial interfaces. Note how the Delay parameter allows you to influence EIGRP pathing decisions without the manipulation of the Bandwidth value. This is nice since other mechanisms could be relying heavily on the bandwidth setting, e.g. EIGRP bandwidth pacing or absolute QoS reservation values for CBWFQ.
The actual metric value for a prefix is derived from the SUM of the delay values in the path, and the LOWEST bandwidth value along the path. This is yet another reason to use more predictive Delay manipulations to change EIGRP path preference.

In the next post on the EIGRP metric, we will examine this at the actual command line, and discuss EIGRP load balancing options. Thanks for reading!

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.

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!

About NB

Network Bulls is Best institute for cisco certifications training in gurgaon. Network Bulls: A Complete CISCO Security Training Institute in Delhi/NCR, Gurgaon. Network Bulls provides Class Room, Online, One to One and Boot camp training on CCNA, CCNP, CCNA Security, CCNA Voice, CCSP, CCIE R&S, CCIE Security. Network Bulls is India's top CCIE (Cisco Certified Internetwork Expert) bootcamps, online classes and expert technical training Provider. Network Bulls provides ccna training in gurgaon. best ccnp training in gurgaon and bootcamp training for ccie written and lab certification in fast track, slow track and normal track for freshers and experienced candidates. NB is best ccie training institute in india. if anyone reallly interested doing quality training of cisco CCIE security Version 4, than i will recommend NB for CCIE Security Version 4 Training in India. CCIE Security Version 4 is highest level Certification offered by Cisco Systems, in Network Security track. All new devices of CCIE Security Version 4, are available in Network Bulls Gurgaon.

About Network Bulls Gurgaon

Best institute for ccna, ccnp, ccsp and ccie security version 4 course training in Delhi and Gurgaon.
Which is best ccsp institute in delhi? cisco certified security professional training in delhi ncr gurgaon. Nb provides world class top training for cisco security firewall in delhi ncr. Cisco CCIE certification exam lab asia's biggest lab training institution in new delhi gurgaon india. There are many institutes in India, who claims to provide Job Guarantee after CCNA even. There are some small institutes, who make fool of students with there cheap tricks and frauds. Some institutes in this field, do not have CCIE Certified trainers and racks available, but they claim to provide best training from other big institutes. Student should not take admission in such fraud and cheap institutes. Students can also give their valuable feedback, complaints and reviews about different institutes in our forums. But students should also be aware of wrong and unauthenticated feedback or complaints against great institutes like Network Bulls, Networkers Home and INE in some fake complaint forums, where no one is authenticating any comment or posts. Those wrong posts are written by some competitor institutes only. Those cheap and fraud institutes can't earn money and get admissions based on their results and infrastructure. They just write rubbish and wrong things on different forums against some good institutes and try to get admissions. A student who want to get refunds or good training or want to give feedback, can also go to consumer court and register a complaint against that fraud institute.
As per my experience Network Bulls and INE are both the best institutes of world.