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Table Of Contents

Contents
Chapter 1: Introduction
- Purpose
- Related resources
- Support
Chapter 2: New in this release
- VOSS 4.2.1
  - Features
  - Other changes
- VOSS 4.2
  - Features
  - Other changes
Chapter 3: Network design fundamentals
Chapter 4: Hardware fundamentals and guidelines
- Supported hardware
- Platform considerations
- Hardware compatibility for VSP 4000
- Supported optical devices
- Dispersion considerations for long reach
- 10/100BASE-X and 1000BASE-TX reach
- 10/100/1000BASE-TX Auto-Negotiation recommendations
- Auto MDIX
- CANA
Chapter 5: Optical routing design
- Optical routing system components
Chapter 6: Platform redundancy
- Power redundancy
- Input/output port redundancy
- Configuration redundancy
- Link redundancy
Chapter 7: Link redundancy
- Physical layer redundancy
- MultiLink Trunking
- 802.3ad-based link aggregation
Chapter 8: Layer 2 loop prevention
- Loop prevention and detection
- SLPP example scenarios
Chapter 9: Layer 2 switch clustering and SMLT
- Split MultiLink Trunk configuration
Chapter 10: Layer 3 switch clustering and RSMLT
- Routed SMLT
- Switch clustering topologies and interoperability with other products
Chapter 11: Layer 3 switch clustering and multicast SMLT
- General guidelines
- Multicast triangle topology
- Square and full-mesh topology multicast guidelines
- SMLT and multicast traffic issues
Chapter 12: Spanning tree
- Spanning tree and protection against isolated VLANs
- MSTP and RSTP considerations
Chapter 13: Layer 3 network design
- VRF Lite
- Virtual Router Redundancy Protocol
- Open Shortest Path First
- Border Gateway Protocol
- IP routed interface scaling
- IPv6
Chapter 14: SPBM design guidelines
- 802.1aq standard
- VLANs without member ports
- Provisioning
- Implementation options
- Reference architectures
- Solution-specific reference architectures
- Best practices
- SPBM restrictions and limitations
- IP multicast over Fabric Connect restrictions
Chapter 15: IP multicast network design
- Multicast and VRF-Lite
- Multicast and MultiLink Trunking considerations
- Multicast scalability design rules
- IP multicast address range restrictions
- Multicast MAC address mapping considerations
- Dynamic multicast configuration changes
- IGMPv3 backward compatibility
- IGMP Layer 2 Querier
- TTL in IP multicast packets
- Multicast MAC filtering
- Guidelines for multicast access policies
- Split-subnet and multicast
- Protocol Independent Multicast-Sparse Mode guidelines
- Protocol Independent Multicast-Source Specific Multicast guidelines
- Multicast for multimedia
Chapter 16: System and network stability and security
- DoS protection mechanisms
- Damage prevention
- Data plane security
- Control plane security
- Additional information
Chapter 17: QoS design guidelines
- QoS mechanisms
- QoS interface considerations
- Network congestion and QoS design
- QoS examples and recommendations
Chapter 18: Layer 1, 2, and 3 design examples
- Layer 1 example
- Layer 2 example
- Layer 3 example
Glossary

Figure 69: RP failover with default unicast routes

Because failover is determined by unicast routing behavior, carefully consider the unicast routing

design, as well as the IP address you select for the RP. Static RP failover performance depends on

the convergence time of the unicast routing protocol. For quick convergence, Avaya recommends

that you use a link state protocol, such as OSPF. For example, if you use RIP as the routing

protocol, an RP failure can take minutes to detect. Depending on the application, this situation can

be unacceptable.

Static RP failover time does not affect routers that have already switched over to the SPT; failover

time only affects newly-joining routers.

Unsupported static RP configurations

If you use static RP, you disable dynamic RP learning. The following figure shows an unsupported

configuration for static RP. In this example because of inter-operation between static RP and

dynamic RP, no RP exists at switch 2. However, (S,G) creation and deletion occurs every 210

seconds at switch 16.

Protocol Independent Multicast-Sparse Mode guidelines

June 2015 Network Design Reference for Avaya VSP 4000 Series 139

Comments on this document? infodev@avaya.com