1.0 Network Principles

    • 1.1.a Describe basic software architecture differences between IOS and IOS XE
      • 1.1.a (i) Control plane and Forwarding plane
      • 1.1.a (ii) Impact to troubleshooting and performances
      • 1.1.a (iii) Excluding specific platform’s architecture
    • 1.1.b Identify Cisco express forwarding concepts
      • 1.1.b (i) RIB, FIB, LFIB, Adjacency table
      • 1.1.b (ii) Load balancing Hash
      • 1.1.b (iii) Polarization concept and avoidance
    • 1.1.c Explain general network challenges
      • 1.1.c (i) Unicast flooding
      • 1.1.c (ii) Out of order packets
      • 1.1.c (iii) Asymmetric routing
      • 1.1.c (iv) Impact of micro burst
    • 1.1.d Explain IP operations
      • 1.1.d (i) ICMP unreachable, redirect
      • 1.1.d (ii) IPv4 options, IPv6 extension headers
      • 1.1.d (iii) IPv4 and IPv6 fragmentation
      • 1.1.d (iv) TTL &1.1.d (v) IP MTU
    • 1.1.e Explain TCP operations
      • 1.1.e (i) IPv4 and IPv6 PMTU
      • 1.1.e (ii) MSS &1.1.e (iii) Latency &1.1.e (iv) Windowing
      • 1.1.e (v) Bandwidth delay product
      • 1.1.e (vi) Global synchronization &1.1.e (vii) Options
    • 1.1.f Explain UDP operations
      • 1.1.f (i) Starvation &1.1.f (ii) Latency
      • 1.1.f (iii) RTP/RTCP concepts
  • 1.2 Network implementation and operation
    • 1.2.a Evaluate proposed changes to a network
    • 1.2.a (i) Changes to routing protocol parameters
    • 1.2.a (ii) Migrate parts of a network to IPv6
    • 1.2.a (iii) Routing protocol migration
    • 1.2.a (iv) Adding multicast support
    • 1.2.a (v) Migrate spanning tree protocol
    • 1.2.a (vi) Evaluate impact of new traffic on existing QoS design
  • 1.3 Network troubleshooting
    • 1.3.a Use IOS troubleshooting tools
      • 1.3.a (i) debug, conditional debug
      • 1.3.a (ii) ping, traceroute with extended options
      • 1.3.a (iii) Embedded packet capture
      • 1.3.a (iv) Performance monitor
    • 1.3.b Apply troubleshooting methodologies
      • 1.3.b (i) Diagnose the root cause of networking issue (analyze symptoms,
      • identify and describe root cause)
      • 1.3.b (ii) Design and implement valid solutions according to constraints
      • 1.3.b (iii) Verify and monitor resolution
    • 1.3.c Interpret packet capture
      • 1.3.c (i) Using Wireshark trace analyzer
      • 1.3.c (ii) Using IOS embedded packet capture