Design Reference

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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

BackupMaster routes all traffic received on the BackupMaster IP interface according to the switch

routing table.

Figure 28: VRRP with BackupMaster

Avaya recommends that you stagger VRRP instances on a network or subnet basis. The following

figure shows the VRRP Masters and BackupMasters for two subnets. For more information about

how to configure VRRP using the Avaya Command Line Interface (ACLI) and Enterprise Device

Manager (EDM), see Configuration - IP Routing for Avaya Virtual Services Platform 4000 Series,

NN46251-505.

Figure 29: VRRP network configuration

The VRRP BackupMaster uses the VRRP standardized backup switch state machine. Thus, VRRP

BackupMaster is compatible with standard VRRP.

Avaya recommends that you use the following best practices to implement VRRP:

• Do not configure the virtual address as a physical interface that is used on the routing switches.

Instead, use a third address, for example:

- Interface IP address of VLAN A on Switch 1 = x.x.x.2

- Interface IP address of VLAN A on Switch 2 = x.x.x.3

- Virtual IP address of VLAN A = x.x.x.1

Note:

Avaya does not support a VRRP virtual IP address that is the same as the local physical

address of the device.

• Configure the VRRP holddown timer with enough time that the Interior Gateway Protocol (IGP)

routing protocol has time to update the routing table. In some cases, configuring the VRRP

Layer 3 network design

78 Network Design Reference for Avaya VSP 4000 Series June 2015

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