BLADE OS™ Application Guide HP GbE2c Ethernet Blade Switch for c-Class BladeSystem Version 5.1 Advanced Functionality Software
Table Of Contents
- Contents
- Figures
- Tables
- Preface
- Part 1: Basic Switching
- Accessing the Switch
- The Management Network
- Local Management Using the Console Port
- The Command Line Interface
- Remote Management Access
- Client IP Address Agents
- Securing Access to the Switch
- Setting Allowable Source IP Address Ranges
- RADIUS Authentication and Authorization
- TACACS+ Authentication
- LDAP Authentication and Authorization
- Secure Shell and Secure Copy
- Configuring SSH/SCP Features on the Switch
- Configuring the SCP Administrator Password
- Using SSH and SCP Client Commands
- SSH and SCP Encryption of Management Messages
- Generating RSA Host and Server Keys for SSH Access
- SSH/SCP Integration with Radius Authentication
- SSH/SCP Integration with TACACS+ Authentication
- End User Access Control
- Ports and Trunking
- Port-Based Network Access Control
- VLANs
- Spanning Tree Protocol
- RSTP and MSTP
- Link Layer Discovery Protocol
- Quality of Service
- Accessing the Switch
- Part 2: IP Routing
- Basic IP Routing
- Routing Information Protocol
- IGMP
- OSPF
- OSPF Overview
- OSPF Implementation in BLADE OS
- OSPF Configuration Examples
- Remote Monitoring
- Part 3: High Availability Fundamentals
- High Availability
- Layer 2 Failover
- Server Link Failure Detection
- VRRP Overview
- Failover Methods
- BLADE OS Extensions to VRRP
- Virtual Router Deployment Considerations
- High Availability Configurations
- High Availability
- Part 4: Appendices
- Index
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CHAPTER 5
Spanning Tree Protocol
When multiple paths exist on a network, Spanning Tree Protocol (STP) allows the switch to
determine the most efficient path. The following topics are discussed in this chapter:
“STP Overview” on page 109
“Bridge Protocol Data Units (BPDUs)” on page 110
“Spanning Tree Group Configuration Guidelines” on page 112
“Multiple Spanning Trees” on page 115
“Port Fast Forwarding” on page 118
“Fast Uplink Convergence” on page 118
“Hot Links” on page 119
STP Overview
Spanning Tree Protocol (STP) detects and eliminates logical loops in a bridged or switched
network. When multiple paths exist, STP configures the network so that a switch uses only the most
efficient path. If that path fails, Spanning Tree automatically sets up another active path on the
network to sustain network operations.
The HP GbE2c Ethernet Blade Switch (GbE2c) supports IEEE 802.1D Spanning Tree Protocol. It is
compatible with PVST+ by configuring each STP Group in different STP instances.
Note – The GbE2c also supports IEEE 802.1w Rapid Spanning Tree Protocol, and IEEE 802.1s
Multiple Spanning Tree Protocol. For more information, see Chapter 6, “Rapid Spanning Tree
Protocol/Multiple Spanning Tree Protocol.”