Question

plz need at least 5-6 lines answers for each Qs

(1) What are the main advantages of Software Defined Networking?

(2)How would you justify using Top of Rack switching instead of End of Row switching in a data center?

(3) How does something like Cisco's Unified Communications System and Integrated Fabric improve a data center infrastructure?

(4) Why are Fabric Extenders not recommended where most of the traffic in a data center is east-west?

(5) What is the advantage of using a bare metal switch?

Answer 1

1)

Below are some specific advantages of SDN for the enterprise:

Content Delivery:

Controlling data traffic is one of the primary advantages of software defined networking. The ability to direct and automate data traffic makes implementing quality of services (QoS) for voice over IP (VOIP), video and audio transmissions much easier. Software defined networking provides a seamless experience for end-users streaming high quality audio and video.

Lessen Capital Expenditure:

By implementing software defined networking, enterprise businesses can easily optimize existing network devices. Existing hardware can be repurposed to follow the instructions of a SDN controller, and more cost-efficient hardware can be deployed with greater effect. For example, a “white box” switch can be made using commoditized parts already owned by a business, preventing the purchase of proprietary switches.

Centralization:

Software defined networks offer a centralized view of an organizations entire network, making it easier to streamline enterprise management and provisioning. As VLANs become a more prominent part of physical LANs, the number of links and dependencies can easily create confusion. SDNs can speed service delivery and provide more agility for both virtual and physical network provisioning, all from a central location.

Management:

In order to accommodate big data, enterprise businesses are constantly setting up new applications and virtual machines to handle processing requests. By implementing SDN, IT teams are able to change network configurations with no effect to the network. Additionally, SDN supports the management of physical and virtual switches and network equipment from a single centralized controller, something that cannot be done using simple network management protocol (SNMP).

2)

Below are the advantages of Top of Rack over End of Row:

• Copper stays “In Rack”. No large copper cabling infrastructure required.
• Lower cabling costs. Less infrastructure dedicated to cabling and patching. Cleaner cable management.
• Modular and flexible “per rack” architecture. Easy “per rack” upgrades/changes.
• Future proofed fiber infrastructure, sustaining transitions to 40G and 100G.
• Short copper cabling to servers allows for low power, low cost 1oGE (10GBASE-CX1), 40G in the future.
• Ready for Unified Fabric today.

NOTE: As per Chegg policy, I am allowed to answer only 2 questions (including sub-parts) on a single post. Kindly post the remaining questions separately and I will try to answer them. Sorry for the inconvenience caused.