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CCNA 200-301

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WAN Operations WAN Standards

Modern WAN standards are defined and managed by a number of recognized authorities including the following:

TIA/EIA - Telecommunications Industry Association and Electronic Industries Alliance

ISO - International Organization for Standardization

IEEE - Institute of Electrical and Electronics Engineers

WANs in the OSI Model

Most WAN standards focus on the physical layer and the data link layer.

Layer 1 Protocols

Synchronous Digital Hierarchy (SDH)

Synchronous Optical Networking (SONET)

Dense Wavelength Division Multiplexing (DWDM)

Layer 2 Protocols

Broadband (i.e., DSL and Cable)

Wireless

Ethernet WAN (Metro Ethernet)

Multiprotocol Label Switching (MPLS)

Point-to-Point Protocol (PPP) (less used)

High-Level Data Link Control (HDLC) (less used)

Frame Relay (legacy)

Asynchronous Transfer Mode (ATM) (legacy)

EtherChannel Operation Advantages of EtherChannel

EtherChannel technology has many advantages, including the following:

•Most configuration tasks can be done on the EtherChannel interface instead of on each individual port, ensuring configuration consistency throughout the links.

•EtherChannel relies on existing switch ports. There is no need to upgrade the link to a faster and more expensive connection to have more bandwidth.

•Load balancing takes place between links that are part of the same EtherChannel.

•EtherChannel creates an aggregation that is seen as one logical link. When several EtherChannel bundles exist between two switches, STP may block one of the bundles to prevent switching loops. When STP blocks one of the redundant links, it blocks the entire EtherChannel. This blocks all the ports belonging to that EtherChannel link. Where there is only one EtherChannel link, all physical links in the EtherChannel are active because STP sees only one (logical) link.

•EtherChannel provides redundancy because the overall link is seen as one logical connection. Additionally, the loss of one physical link within the channel does not create a change in the topology.

CCNP COURSES IN FAISALABAD

- Implementing and Operating Cisco Enterprise Network Core Technologies (350-401 ENCOR)
- Implementing Cisco Enterprise Advanced Routing and Services v1.0 (300-410 ENARSI)
- Implementing Cisco SD-WAN Solutions (300-415 ENSDWI)
- Designing Cisco Enterprise Networks (300-420 ENSLD)
- Designing Cisco Enterprise Wireless Networks (300-425 ENWLSD)
- Implementing Cisco Enterprise Wireless Networks (300-430 ENWLSI)
- Automating and Programming Cisco Enterprise Solutions (300-435 ENAUTO) 

Baseline Equipment Bundle:

• 3x Cisco 4221 with SEC license (2 with NIM-2T)
• 2x Cisco Catalyst 3650 Switches (WS-C3650-24TS-E)
• 1x Cisco Catalyst 2960+ Switch (WS-C2960+24TC-L)
• Ethernet cables as shown in the topology
• 2x CAB-SS-V35MT= (10’ DTE Serial Cable)
• 2x CAB-SS-V35FC= (10’ DCE Serial Cable)
• PCs – minimum system requirements
  • CPU: Intel Pentium 4, 2.53 GHz or equivalent
  • Operating Systems, such as Microsoft Windows, Linux, and Mac OS•
  • RAM: 4 GB
  • Storage: 500 MB of free disk space
  • Display resolution: 1024 x 768
  • Language fonts supporting Unicode encoding (if viewing in languages other than English)
  • Latest video card drivers and operating system updates
• Internet connection for lab and study PCs

Software:

• Cisco IOS versions:
  • Routers: Version IOS-XE 16.9.4 or higher, universal feature set.
  • Layer 3 Switches: Version IOS-XE 16.9.4 or higher, ipservices feature set.
  • Layer 2 Switches: Version IOS 15.2.7 or higher, lanbaseK9 feature set
• Packet Tracer v7.3 (optional for CCNA skills review activities)
• Open-source server software for various services and protocols, such as HTTP, DHCP, FTP, TFTP, etc.
• Terminal emulation and SSH client software, such as Tera Term and PuTTy for lab PCs.
• Oracle VirtualBox, most recent version.
• Wireshark version: latest stable version
• Terminal emulation software for the installed PC operating system

Cisco IPD Week, February 2020

IPD Week, February 2020
hosted by the Technical Field Engagement Team
17-23 February 2020

New CCNA Cyber Ops Certifications

New Cyber Ops Associate Certification Coming

Because cyber operations play an increasingly critical role in the security strategy of organizations today, Cisco has announced a new certification track dedicated to developing cyber operations skills. For those working on CCNA Cyber Ops certification, keep them going. Students that finish before the new certification goes live, their CCNA Cyber Ops will automatically be updated to the new certification. More details will become available in the coming months.

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