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Home > News > CCIE Lab > BGP MPLS VPN Design Question of CCIE RS lab exam.

BGP MPLS VPN Design Question of CCIE RS lab exam.

access_time2019-06-18
perm_identity Posted by spoto
folder_open CCIE Lab
BGP-MPLS-vpn-design-question-in-CCIE-RS-lab-exam

Before we discuss the BGP MPLS design of the CCIE R / Sexperimental exam, let undefined first look at the BGP / MPLS roles and responsibilities that network professionals will perform.

Roles and responsibilities of BGP / MPLS network professionals: today, almost every service provider around the world uses BGP and MPLS deployment throughout the cloud to provide and manage millions of network infrastructure and better service availability and performance for customers.

MPLS is especially suitable for operator networks and commercial wide area networks.

BGP and MPLS deployment will ensure perfect connectivity and day-to-day activities in the multi-protocol network infrastructure, as well as maintain excellent communication service methods without any obstacles, as both are publicly considered standard technologies.

In addition, if you want to gain the right knowledge, you should join the courses offered by SPOTO to enhance your knowledge. BGP or MPLS network professionals are required to have a medium to a high level of understanding of the network infrastructure of an enterprise or operator.

Their role is usually 24 × 7 to support network services and planned and unplanned shifts. Now, here are some questions about BGP and MPLS, which will be raised to candidates in interviews.

Q: what is MPLS?

A: this question is one of the most common questions that will be asked during MPLS interviews, so candidates must prepare the question before they face the interview.

First, you need to start with an introduction to MPLS. Multi-protocol label switching (MPLS) provides a mechanism for packet processing based on a label. It will be seen as a data forwarding service that will provide high-end network communication from one network node to the next based on tags rather than routing table lookups.

Routing table lookups for each packet slow communication, but MPLS uses LFIB or forwarding tables to process tags from one node to another. The main benefits of using MPLS are QoS integration: support for multi-level QoS, to manage delay, jitter and packet loss of various types of traffic, such as voice, video, batch file transfer, e-mail, etc. Fast convergence: switching on the basis of tags do not need to look for routing tables. Provides scalability for IP VPN. MPLS TE is used to realize low network congestion. Reliable and safe.

Q: name the BGP path property to control incoming and outgoing traffic?

A: BGP may have multiple paths attributes that affect traffic.

In the most common practice, we use AS-Path pre-hanging and MED (also known as multi-exit discriminator) to handle incoming traffic. Moreover, in order to affect outgoing traffic, weight and local preferences, it will be the best choice.

Q: what should we do if my BGP neighbor is idle or active?

A. If you think that the BGP peer is idle, it may be due to a physical connection failure, or the neighbor AS cannot define the neighbor correctly. In connection state, BGP will try to establish a TCP session with port number 179; if it cannot establish a connection, it may enter an active state, where it will try to establish a TCP connection again. Here are some questions that can be asked in the CCIE R / S laboratory exams for BGP and MPLS. To gain full access to content, join the course provided by SPOTO. They are the best when learning to dump for CISCO.

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