Design Reference
Table Of Contents
- Contents
- Chapter 1: Introduction
- Chapter 2: New in this release
- Chapter 3: Network design fundamentals
- Chapter 4: Hardware fundamentals and guidelines
- Chapter 5: Optical routing design
- Chapter 6: Platform redundancy
- Chapter 7: Link redundancy
- Chapter 8: Layer 2 loop prevention
- Chapter 9: Spanning tree
- Chapter 10: Layer 3 network design
- Chapter 11: SPBM design guidelines
- Chapter 12: 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
- Multicast for multimedia
- Chapter 13: System and network stability and security
- Chapter 14: QoS design guidelines
- Chapter 15: Layer 1, 2, and 3 design examples
- Chapter 16: Software scaling capabilities
- Chapter 17: Supported standards, RFCs, and MIBs
- Glossary
Figure 13: VLAN isolation
MSTP and RSTP considerations
The Spanning Tree Protocol (STP) provides loop protection and recovery, but it is slow to
respond to a topology change in the network (for example, a dysfunctional link in a network).
The RSTP (IEEE 802.1w) and MSTP (IEEE 802.1s) protocols reduce the recovery time after
a network failure. RSTP and MSTP also maintain a backward compatibility with IEEE 802.1D.
Typically, the recovery time of RSTP and MSTP is less than 1 second. RSTP and MSTP also
reduce the amount of flooding in the network by enhancing the way that Topology Change
Notification (TCN) packets are generated.
Spanning tree
52 Network Design Reference for Avaya VSP 4000 February 2014
Comments? infodev@avaya.com