Figure 4.26. An Example BPDU Relaying Scenario
Implementing BPDU Relaying
The NetDefendOS BDPU relaying implementation only carries STP messages. These STP
messages can be of three types:
•
Normal Spanning Tree Protocol (STP)
•
Rapid Spanning Tree Protocol (RSTP)
•
Multiple Spanning Tree Protocol (MSTP)
•
Cisco proprietary PVST+ Protocol (Per VLAN Spanning Tree Plus)
NetDefendOS checks the contents of BDPU messages to make sure the content type is
supported. If it is not, the frame is dropped.
Enabling/Disabling BPDU Relaying
BPDU relaying is disabled by default and can be controlled through the advanced setting Relay
Spanning-tree BPDUs. Logging of BPDU messages can also be controlled through this setting.
When enabled, all incoming STP, RSTP and MSTP BPDU messages are relayed to all transparent
interfaces in the same routing table, except the incoming interface.
4.8.5. MPLS Pass Through
Multi-protocol Label Switching
(MPLS) is a standard that allows the attaching of
labels
to IP
packets to provide information about the packet's eventual destination. The router that initially
attached the MPLS label is known as the
ingress router
.
Network nodes that support MPLS can then use this attached information to route packets
Chapter 4: Routing
389
Summary of Contents for NetDefendOS
Page 30: ...Figure 1 3 Packet Flow Schematic Part III Chapter 1 NetDefendOS Overview 30 ...
Page 32: ...Chapter 1 NetDefendOS Overview 32 ...
Page 144: ...Chapter 2 Management and Maintenance 144 ...
Page 284: ...Chapter 3 Fundamentals 284 ...
Page 392: ...Chapter 4 Routing 392 ...
Page 419: ... Host 2001 DB8 1 MAC 00 90 12 13 14 15 5 Click OK Chapter 5 DHCP Services 419 ...
Page 420: ...Chapter 5 DHCP Services 420 ...
Page 573: ...Chapter 6 Security Mechanisms 573 ...
Page 607: ...Chapter 7 Address Translation 607 ...
Page 666: ...Chapter 8 User Authentication 666 ...
Page 775: ...Chapter 9 VPN 775 ...
Page 819: ...Chapter 10 Traffic Management 819 ...
Page 842: ...Chapter 11 High Availability 842 ...
Page 866: ...Default Enabled Chapter 13 Advanced Settings 866 ...
Page 879: ...Chapter 13 Advanced Settings 879 ...