Advanced Networking with CISCO (CCNA) > Advanced Troubleshooting

Routing Failures & Troubleshooting

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Some common causes for routing failures are:

  • The recipient gave an incorrect address
  • The postman delivered it to the wrong house
  • The delivery was delayed due to bad weather or other natural disasters

Ping and traceroute are the go-to tools for diagnosing routing issues. Ping is a very straightforward tool. It transmits a "echo request" packet over the Internet Control Message Protocol (ICMP) to the destination device, which responds with a "echo response" packet.

If your ISP provides a catch-all POP3 mailbox and someone sends a message to a non-existent user, or if someone sends a message to you with a BCC, the recipient email address will not be in the headers anyplace that VPOP3 can detect it, routing issues can arise.

Ping one computer using another computer on the same network to see if your router is working. If your router is in good working order, you should be able to do so. The firewall on your machine must also be turned off.

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very easy questions.

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Course Content

  1. Introduction to Networking
    19m 37s
  2. Basics of Networking Cables
    23m 40s
  3. Types of Topology Part -1
    19m 8s
  4. Types of Topology Part -2
    16m 11s
  5. TCP/IP Suite
    17m 51s
  6. OSI Model
    18m 37s
  7. Network Devices
    26m 23s
  8. Network Protocols
    34m 38s
  9. Next-Generation Firewalls
    28m 43s
  10. Assignment : Introduction To Networking
    39s

  1. IP Address
    31m 6s
  2. IP Address Classes
    29m 41s
  3. IP Subnetting
    26m 59s
  4. Class C Subnetting
    25m 47s
  5. Configuration of IP Address
    30m 14s
  6. IPv6 Addressing Part -1
    17m 56s
  7. IPv6 Addressing Part -2
    16m 52s
  8. Assignment : IP Address
    1m

  1. Introduction to Cisco IOS
    26m 45s
  2. Router Memory
    33m 50s
  3. Modes in a Router
    32m 21s
  4. Cisco IOS Password Configuration
    20m 43s
  5. Practical: Router Configuration
    27m 3s
  6. Practical: Commands of Routing
    19m 5s
  7. Assignment : Working With Cisco Devices
    1m 7s

  1. Routing Fundamentals
    23m 16s
  2. Static Routing
    28m 43s
  3. Default Routing
    24m 17s
  4. Dynamic Routing
    26m 55s
  5. Packet Forwarding
    4m 51s
  6. Assignment : Basic Routing Technologies
    1m 27s

  1. Advanced Routing Technologies
    20m 59s
  2. RIPv1 & RIPv2 Configuration
    26m 11s
  3. OSPF Routing
    19m 30s
  4. Configuring OSPFv2
    15m 50s
  5. Configuring OSPFv3
    23m 14s
  6. Hybrid Routing Protocol
    19m 37s
  7. EIGRP Routing and Configuration
    31m 50s
  8. Assignment : Advanced Routing Technologies
    1m 31s

  1. LAN Switching Technologies
    22m 34s
  2. Introduction to Ethernet
    17m 45s
  3. Switching Techniques
    20m 41s
  4. Basic Switch Configuration
    17m 45s
  5. Assignment : Basic LAN Switching Technologies
    1m 7s

  1. Introduction to VLAN
    29m 56s
  2. Switch Mode Port
    19m 15s
  3. VLAN Routing
    25m 4s
  4. Router-on-Stick Configuration
    15m 43s
  5. VLAN Trunking Protocol
    24m 5s
  6. Spanning Tree Protocol
    26m 9s
  7. Features of Ether channel
    25m 9s
  8. Assignment : Advanced Switching Technologies
    1m 53s

  1. Infrastructure Services
    38m 51s
  2. Dynamic NAT
    12m 6s
  3. Port Address Translation
    18m 31s
  4. NTP Configuration
    28m 20s
  5. DHCP Configuration
    15m 56s
  6. Syslog
    25m 22s
  7. SNMP Protocol
    10m 47s
  8. Assignment : Infrastructure Services
    1m 24s

  1. WAN Technologies
    21m 31s
  2. WAN Device
    12m 19s
  3. VPN Configuration
    20m 37s
  4. Point-to-Point Protocol (PPP) Configuration
    27m 16s
  5. Assignment : WAN Technologies
    1m 45s

  1. Switching Password
    30m 44s
  2. SSH Configure
    28m 33s
  3. Port Security
    32m 11s
  4. Access Control List (ACL)
    16m 11s
  5. Configure Switch Port Security
    22m 14s
  6. Number of ACL
    29m 35s
  7. Name of ACL
    17m 49s
  8. Assignment : Infrastructure Security
    2m 18s

  1. Infrastructure Management
    9m 50s
  2. SNMP Versions
    36m 59s
  3. Assignment : Infrastructure Management
    1m 24s

  1. Basic Troubleshooting
    9m 27s
  2. Wiring Problems Troubleshooting
    27m 5s
  3. Troubleshooting IP Addressing and Host
    30m 15s
  4. Assignment : Basic Troubleshooting
    2m 11s

  1. Advanced Troubleshooting
    13m 10s
  2. Routing Failures & Troubleshooting
    35m 18s
  3. Assignment : Advanced Troubleshooting
    1m 32s

  1. Automation & Programmability
    17m 38s
  2. Wireless Security Protocols
    11m 20s
  3. Assignment : Automation and Programmability
    29s

  1. Course Summary
    4m 12s

  1. Cisco Network Interview Questions Part 1
    23m 34s
  2. Cisco Network Interview Questions Part 2
    30m 23s

  1. Career Guideline
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