Networking Fundamentals

Identify the concepts and functionality of various fundamental elements of networking

• Collision domains and broadcast domains

• Function of routers and switches

• Optical network fundamentals – SONET/SDH, OTN

• Ethernet networks

• Layer 2 addressing, including address resolution

• IPv4 and IPv6 fundamentals

• Layer 3 / IP addressing, including subnet masks

• Subnetting and supernetting

• Decimal to binary conversion

• Longest match routing

• Connection-oriented vs. connectionless protocols

Junos OS Fundamentals

Identify the concepts, benefits and functionality of the core elements of the Junos OS

• Junos device portfolio – product families, general functionality

• Software architecture

• Control and forwarding planes

• Routing Engine and Packet Forwarding Engine

• Protocol daemons

• Transit traffic processing

• Exception traffic

User Interfaces

Identify the concepts, operation and functionality of the Junos user interfaces

• CLI functionality

• CLI modes

• CLI navigation

• CLI Help

• Filtering output

• Active vs. candidate configuration

• Reverting to previous configurations

• Modifying, managing, and saving configuration files

• Viewing, comparing, and loading configuration files

• J-Web-core/common functionality

Junos Configuration Basics

Identify the main elements for configuring Junos devices

• Factory-default state

• Initial configuration

• User accounts

• Login classes

• User authentication methods

• Interface types and properties

• Configuration groups

• Additional initial configuration elements-NTP, SNMP, syslog, etc.

• Configuration archival

• Logging and tracing

• Rescue configuration

• Describe how to configure basic components of a Junos device

Operational Monitoring and Maintenance

Identify methods of monitoring and maintaining Junos devices

• Show commands

• Monitor commands

• Interface statistics and errors

• Network tools-ping, traceroute, telnet, SSH, etc.

• Real-time performance monitoring (RPM)

• Junos OS installation

• Software upgrades

• Powering on and shutting down Junos devices

• Root password recovery

• Describe monitoring and maintenance procedures for a Junos device

Routing Fundamentals

Identify basic routing concepts and functionality for Junos devices

• Packet forwarding concepts

• Routing tables

• Routing vs. forwarding tables

• Route preference

• Routing instances

• Static routing

• Advantages of / use cases for dynamic routing protocols

• Describe how to configure and monitor basic routing elements for a Junos device

Routing Policy and Firewall Filters

Identify the concepts and functionality of routing policy and firewall filters on Junos devices

• Default routing policies

• Import and export policies

• Routing policy flow

• Effect of policies on routes and routing tables

• Policy structure and terms

• Policy match criteria, match types, and actions

• Firewall filter concepts

• Firewall filter concepts

• Filter match criteria and actions

• Effect of filters on packets

• Unicast reverse-path-forwarding (RPF)

• Describe how to configure and monitor routing policies and firewall filters on a Junos device