Network Infrastructure (30%)
Switched campus
- Switch administration
- Managing MAC address table
- Errdisable recovery
- L2 MTU
- Layer 2 protocols
- CDP, LLDP
- UDLD
- VLAN technologies
- Access ports
- Trunk ports (802.1Q)
- Native VLAN
- Manual VLAN pruning
- Normal range and extended range VLANs
- Voice VLAN
- EtherChannel
- LACP, static
- Layer 2, Layer 3
- Load balancing
- EtherChannel misconfiguration guard
- Identify multichassis EtherChannel use cases
- Spanning Tree Protocol
- PVST+, Rapid PVST+, MST
- Switch priority, port priority, tuning port/path cost, STP timers
- PortFast, BPDU guard, BPDU filter
- Loop guard, root guard
Routing concepts
- Administrative distance
- Static routing (unicast, multicast)
- Policy-based routing
- VRF-Lite
- VRF-aware routing with BGP, EIGRP, OSPF, and static
- Route leaking between VRFs using route maps and VASI
- Route filtering with BGP, EIGRP, OSPF, and static
- Redistribution between BGP, EIGRP, OSPF, and static
- Routing protocol authentication
- Bidirectional Forwarding Detection
- L3 MTU
EIGRP
- Adjacencies
- Best path selection
- Reported distance, computed distance, feasible distance, feasibility condition, successor, feasible successor
- Classic metrics and wide metrics
- Operations
- General operations
- Topology table
- Packet types
- Stuck-in-active
- Graceful shutdown
- EIGRP named mode
- Optimization, convergence, and scalability
- Query propagation boundaries
- Leak-map with summary routes
- EIGRP stub with leak map
OSPF (v2 and v3)
- Adjacencies
- OSPFv3 address family support
- Network types, area types
- Path preference
- Operations
- General operations
- Graceful shutdown
- GTSM (Generic TTL Security Mechanism)
- Optimization, convergence, and scalability
- Metrics
- LSA throttling, SPF tuning
- Stub router
- Prefix suppression
BGP
- IBGP and EBGP peer relations
- Peer groups, templates
- Active, passive
- Timers
- Dynamic neighbors
- 4-byte AS numbers
- Private AS numbers
- Path selection
- Attributes
- Best path selection algorithm
- Load balancing
- Routing policies
- Attribute manipulation
- Conditional advertisement
- Outbound route filtering
- Standard and extended communities
- Multihoming
- AS path manipulations
- local-as, allowas-in, remove-private-as
- AS path prepending
- Regular expressions
- Convergence and scalability
- Route reflectors
- Aggregation, as-set
- Other BGP features such as soft reconfiguration and route refresh
Multicast
- Layer 2 multicast
- IGMPv2, IGMPv3
- IGMP snooping, PIM snooping
- IGMP querier
- IGMP filter
- MLD
- Reverse path forwarding check
- PIM
- Sparse mode
- Static RP, BSR, Auto-RP
- Group-to-RP mapping
- Source Specific Multicast
- Multicast boundary, RP announcement filter
- PIMv6 anycast RP
- IPv4 anycast RP using MSDP
- Multicast multipath