The Nokia Multicast Protocols (4A0-108) exam validates a candidate’s expertise in designing, implementing, configuring, and troubleshooting multicast services in Nokia Service Router (SR) OS-based IP/MPLS networks. It covers both IPv4 and IPv6 multicast protocols, with a focus on deploying multicast in enterprise, service provider, and large-scale network environments.
This exam is part of the Nokia Service Routing Architect (SRA) certification track and tests the ability to handle multicast from foundational concepts to advanced deployment scenarios, including multicast over MPLS VPNs.
Who Should Take the Exam?
This exam is intended for:
Network engineers and architects who design and deploy multicast-based services.
Service provider engineers responsible for IPTV, live streaming, and large-scale content delivery.
Enterprise network specialists implementing multicast in corporate or campus environments.
Nokia IP/MPLS professionals aiming to complete requirements for the SRA certification.
Professionals who want formal validation of their multicast configuration and troubleshooting skills on Nokia SR OS platforms.
Skills Measured
Candidates will be tested on the ability to:
Understand multicast addressing and group management in IPv4/IPv6.
Explain IGMP and MLD protocols and their operational differences.
Configure and troubleshoot PIM Dense Mode (DM), Sparse Mode (SM), Source-Specific Multicast (SSM), and Bidirectional PIM.
Implement Bootstrap Router (BSR) and Rendezvous Point (RP) configuration and redundancy.
Configure multicast in Layer 3 VPNs (mVPNs).
Understand and deploy Rosen Draft (Draft-Rosen) and NG-mVPN models.
Apply filtering and policy controls for multicast distribution.
Optimize multicast traffic flow and prevent loops.
Perform multicast troubleshooting using Nokia SR OS CLI tools and commands.
Prerequisites
While there is no formal prerequisite to sit for the 4A0-108 exam, Nokia strongly recommends that candidates have:
Completed Nokia Service Routing Protocols (4A0-101) or possess equivalent knowledge.
Practical experience with Nokia SR OS in a lab or production environment.
A solid understanding of IP routing fundamentals (OSPF, IS-IS, BGP).
Familiarity with Layer 2/Layer 3 VPN concepts and MPLS basics.
Prior exposure to multicast fundamentals (helpful but not mandatory).
Exam Format
Exam name: Nokia Multicast Protocols
Exam number: 4A0-108
Mandatory prerequisites: none
Exam duration: 90 Minutes
Exam appointment duration: 110 minutes
Number of questions: 40
Language: English
Course Outline
The exam covers the following topics:
Module 1 - Overview of IP Multicast Technology
Multicast overview
IPv4 multicast addressing
Module 2 - Intradomain Multicast Protocols
Internet Group Management Protocol (IGMP)
Configuring and monitoring IGMP
Reducing multicast flooding in a Layer-2 broadcast domain with IGMP snooping
Eliminating redundant IGMP control messages that reach the last-hop router with IGMP proxy
Enabling IGMP snooping and IGMP proxy on a VPLS service
Protocol Independent Multicast (PIM)
Configuring and monitoring PIM in ASM mode
Module 3 - Multicast Resiliency and Policy
Core network resiliency
Redundant rendezvous points
Incongruent unicast and multicast routing
Multicast policy
Module 4 - Source Specific Multicast
Protocol requirements to achieve source-specific multicast
Configuring PIM and IGMP for SSM mode
Module 5 – Next-Generation Multicast VPN with P2MP MPLS Tunneling
Virtual Private Routed Network (VPRN) basics
VPRN basic configuration
Modifying a VPRN to carry multicast traffic
NG-MVPN using P2MP LDP tunnels to carry multicast traffic
Configuration of NG-MVPN using P2MP LDP tunnels
NG-MVPN using P2MP RSVP tunnels to carry multicast traffic
Configuration of NG-MVPN using P2MP RSVP tunnels
Global Table Multicast (GTM)
GTM configuration
Module 6 - Next-Generation Multicast VPN with BIER Tunneling
Introduction to Bit Index Explicit Replication (BIER)
Link-state routing protocol extensions to support BIER
Configuring IS-IS to support BIER
Configuring OSPF to support BIER
NG-MVPN using BIER tunnels to carry multicast traffic