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Like this article? We recommend 1.0 Layer2 Technologies 20%

1.0 Layer2 Technologies 20%

1.1 LAN switching technologies

  • 1.1.a Implement and troubleshoot switch administration
    • 1.1.a [i] Managing MAC address table
    • 1.1.a [ii] errdisable recovery
    • 1.1.a [iii] L2 MTU
  • 1.1.b Implement and troubleshoot Layer 2 protocols
    • 1.1.b [i] CDP, LLDP
    • 1.1.b [ii] UDLD
  • 1.1.c Implement and troubleshoot VLAN
    • 1.1.c [i] Access ports
    • 1.1.c [ii] VLAN database
    • 1.1.c [iii] Normal, extended VLAN, voice VLAN
  • 1.1.d Implement and troubleshoot trunking
    • 1.1.d [i] VTPv1, VTPv2, VTPv3, VTP pruning
    • 1.1.d [ii] dot1Q
    • 1.1.d [iii] Native VLAN
    • 1.1.d [iv] Manual pruning
  • 1.1.e Implement and troubleshoot etherchannel
    • 1.1.e [i] LACP, PAgP, manual
    • 1.1.e [ii] Layer 2, Layer 3
    • 1.1.e [iii] Load-balancing
    • 1.1.e [iv] etherchannel misconfiguration guard
  • 1.1.f Implement and troubleshoot spanning tree
    • 1.1.f [i] PVST+/RPVST+/MST
    • 1.1.f [ii] Switch priority, port priority, path cost, STP timers
    • 1.1.f [iii] Port fast, BPDUguard, BPDUfilter
    • 1.1.f [iv] Loopguard, rootguard
  • 1.1.g Implement and troubleshoot other LAN switching technologies
    • 1.1.g [i] SPAN, RSPAN, ERSPAN

1.2 Layer 2 Multicast

  • 1.2.a Implement and troubleshoot IGMP
    • 1.2.a [I] IGMPv1, IGMPv2, IGMPv3
    • 1.2.a [ii] IGMP snooping
    • 1.2.a [iii] IGMP querier
    • 1.2.a [iv] IGMP filter
    • 1.2.a [v] IGMP proxy

1.3 Layer 2 WAN circuit technologies

  • 1.3.a Implement and troubleshoot HDLC
  • 1.3.b Implement and troubleshoot PPP
    • 1.3.b [i] Authentication [PAP, CHAP]
    • 1.3.b [ii] PPPoE
    • 1.3.b [iii] MLPPP

1.4 Troubleshooting Layer 2 technologies

  • 1.4.a Use IOS troubleshooting tools
    • 1.4.a [i] debug, conditional debug
    • 1.4.a [ii] ping, traceroute with extended options
    • 1.4.a [iii] Embedded packet capture
  • 1.4.b Apply troubleshooting methodologies
    • 1.4.b [i] Diagnose the root cause of networking issue [analyze symptoms, identify and describe root cause]
    • 1.4.b [ii] Design and implement valid solutions according to constraints
    • 1.4.b [iii] Verify and monitor resolution
  • 1.4.c Interpret packet capture
    • 1.4.c [i] Using wireshark trace analyzer
    • 1.4.c [ii] Using IOS embedded packet capture
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