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JNCIS-ENT (Routing and Switching)

Layer 2 Switching and VLANs

Identify the concepts, operation, and functionality of Layer 2 switching for the Junos OS

  • Enterprise switching platforms
  • Bridging components
  • Frame processing

Identify the concepts, benefits, and functionality of VLANs

  • Ports
  • Tagging
  • Native VLANs and voice VLANs
  • Inter-VLAN routing

Demonstrate knowledge of how to configure, monitor and troubleshoot Layer 2 switching and VLANs

  • Interfaces and ports
  • VLANs
  • Routed VLAN interfaces (RVI)
  • Spanning Tree

Identify the concepts, benefits, operation, and functionality of the Spanning Tree Protocol

  • STP and RSTP concepts
  • Port roles and states
  • BPDUs
  • Convergence and reconvergence

Demonstrate knowledge of how to configure and monitor STP and RSTP

  • STP
  • RSTP
  • Layer 2 Security

Identify the concepts, benefits and operation of various protection and security features

  • BPDU, loop and root protection
  • Port security, including MAC limiting, DHCP snooping, Dynamic ARP inspection (DAI) and IP source guard
  • Storm control
  • Identify the concepts, benefits and operation of Layer 2 firewall filtres
  • Filter types
  • Processing order
  • Match criteria and actions

Demonstrate knowledge of how to configure and monitor Layer 2 security

  • Protection
  • Port security
  • Storm control
  • Firewall filter configuration and application
  • Protocol Independent Routing

Identify the concepts, operation and functionality of various protocol-independent routing components

  • Static, aggregate, and generated routes
  • Martian addresses
  • Routing instances, including RIB groups
  • Load balancing
  • Filter-based forwarding

Demonstrate knowledge of how to configure and monitor various protocol-independent routing components

  • Static, aggregate, and generated routes
  • Load balancing
  • Filter-based forwarding
  • Open Shortest Path First (OSPF)

Identify the concepts, operation and functionality of OSPF

  • Link-state database
  • OSPF packet types
  • Router ID
  • Adjacencies and neighbors
  • Designated router (DR) and backup designated router (BDR)
  • OSPF area and router types
  • LSA packet types

Demonstrate knowledge of how to configure, monitor and troubleshoot OSPF

  • Areas, interfaces and neighbors
  • Additional basic options
  • Routing policy application
  • Troubleshooting tools
  • Intermediate System to Intermediate System (IS-IS)

Identify the concepts, operation and functionality of IS-IS

  • Link-state database
  • IS-IS PDUs
  • TLVs
  • Adjacencies and neighbors
  • Levels and areas
  • Designated intermediate system (DIS)
  • Metrics

Demonstrate knowledge of how to configure, monitor and troubleshoot IS-IS

  • Levels, interfaces and adjacencies
  • Additional basic options
  • Routing policy application

Troubleshooting tools

  • Border Gateway Protocol (BGP)

Identify the concepts, operation and functionality of BGP

  • BGP basic operation
  • BGP message types
  • Attributes
  • Route/path selection process
  • IBGP and EBGP functionality and interaction

Demonstrate knowledge of how to configure and monitor BGP

  • Groups and peers
  • Additional basic options
  • Routing policy application
  • Tunnels

Identify the concepts, requirements and functionality of IP tunneling Tunneling applications and considerations

  • GRE
  • IP-IP

Demonstrate knowledge of how to configure and monitor IP tunnels

  • GRE
  • IP-IP
  • High Availability

Identify the concepts, benefits, applications and requirements for high availability in a Junos OS environment

  • Link aggregation groups (LAG)
  • Redundant trunk groups (RTG)
  • Virtual Chassis
  • Graceful restart (GR)
  • Graceful Routing Engine switchover (GRES)
  • Nonstop active routing (NSR)
  • Nonstop bridging (NSB)
  • Bidirectional Forwarding Detection (BFD)
  • Virtual Router Redundancy Protocol (VRRP)
  • Unified In-Service Software Upgrade (ISSU)

Demonstrate knowledge of how to configure and monitor high availability components

  • LAG and RTG
  • Virtual Chassis
  • GR, GRES, NSR, and NSB
  • VRRP
  • ISSU