• OSPF area types and operations
• Link-state advertisement (LSA) flooding through an OSPF multi-area network
• Designated router/backup designated router operation
• Shortest-path-first (SPF) algorithm
• Metrics, including external metric types
• Summarize and restrict routes
• Virtual links
• OSPFv2 vs. OSPFv3

Given a scenario, demonstrate knowledge of how to configure or monitor single-area or multi-area OSPF:

• Implement OSPF routing policy

• IS-IS areas/levels and operations
• Label-switched path (LSP) flooding through an IS-IS multi- area network
• Designated intermediate system (DIS) operation
• SPF algorithm
• Metrics, including wide metrics
• Route summarization and route leaking

Given a scenario, demonstrate knowledge of how to configure or monitor single-area or multi-area IS-IS:

• Implement IS-IS routing policy

• BGP route selection process
• Next-hop resolution
• BGP attributes—concept and operation
• BGP communities
• Regular expressions
• Multipath
• Multihop
• Load balancing
• Advanced BGP options
• BGP route damping
• BGP flowspec
• Multiprotocol BGP

Describe the concepts, operation, or functionality of BGP scaling mechanisms:

• Route reflection

Given a scenario, demonstrate knowledge of how to configure or monitor BGP:

• Implement BGP routing policy

• CoS processing on Junos OS devices
• CoS header fields
• Forwarding classes
• Classification
• Packet loss priority
• Policers
• Schedulers
• Drop profiles
• Rewrite rules

Given a scenario, demonstrate knowledge of how to configure or monitor CoS.

• Components of IP multicast, including multicast addressing
• IP multicast traffic flow
• Any-source multicast (ASM) versus source-specific multicast (SSM)
• Reverse path forwarding (RPF)—concept and operation
• Internet Group Management Protocol (IGMP)
• Physical Interface Module (PIM) dense mode and sparse mode
• Rendezvous point (RP)—concept, operation, discovery, election
• Source-specific multicast (SSM)—requirements, benefits, address ranges
• Anycast rendezvous point (RP)

Given a scenario, demonstrate knowledge of how to configure or monitor IGMP, PIM dense mode, or PIM sparse mode (including SSM):

• Implement IP multicast routing policy

• Traffic flow—control and data planes
• Full mesh versus hub-and-spoke topology
• VPN-IPv4 addressing
• Route distinguishers
• Route targets
• Route distribution
• Site of origin
• Sham links
• Virtual routing and forwarding (VRF) table-label
• Next-generation multicast virtual private networks (MVPNs)
• Flow of control and data traffic in a MVPN
• Layer 3 VPN scaling
• IPv6 Layer 3 VPNs
• Layer 3 VPN Internet access options

Given a scenario, demonstrate knowledge of how to configure or monitor the components of Layer 3 VPNs.
Describe Junos OS support for carrier-of-carriers or inter-provider VPN models.

• Traffic flow—control and data planes
• Forwarding tables
• Connection mapping
• Layer 2 VPN network layer reachability information (NLRI)
• Route distinguishers
• Route targets
• Layer 2 VPN scaling

Describe the concepts, operation, or functionality of LDP Layer 2 circuits:

• Traffic flow—control and data planes
• Virtual circuit label
• Autodiscovery (AD)
• Layer 2 interworking

Describe the concepts, operation, or functionality of virtual private LAN service (VPLS):

• Traffic flow—control and data planes
• BGP VPLS label distribution
• LDP VPLS label distribution
• Route targets
• VPLS multihoming
• Site IDs

Describe the concepts, operation, or functionality of EVPN:

• Traffic flow—control and data planes
• Media access control (MAC) learning and distribution
• Ethernet VPN (EVPN) multihoming
• BGP EVPN label distribution

Given a scenario, demonstrate knowledge of how to configure, monitor, or troubleshoot Layer 2 VPNs:

• BGP Layer 2 VPNs
• LDP Layer 2 circuits
• EVPNs
• VPLS