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S200 manual
1
1
162
162
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162 pages, 1.21 Mb
3Com
®
Corporation
PathBuilder
™
S200 Series Switch
Bridging
Contents
Main
Notice
Restricted Rights Notification for U.S. Government Users
Restricted Rights Legend
Notice
Notice (continued)
Proprietary Material
Page
Bridging Overview
Figure 1. PathBuilder S200 Series Switch Bridge Combining Traffic from Serial Devices
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Bridging Features and Capabilities
Figure 2. Example of Typical PathBuilder S200 Series Switch Bridging Application
Ethernet LAN
Figure 3. Frame Format for Ethernet Frames
Figure 4. 802.3 Ethernet MAC Frame Format Example
Figure 5. Ethernet Bridge Example
Mixed LAN Bridging
Figure 6. Example of Mixed LAN Bridging in PathBuilder S24x, 26x, and 27x Switch
MAC Addressing
LLC2 Local Termination
Figure 7. Local Termination Example
Autolearn for Local Termination
Figure 8. Example of Local Termination Autolearn
Filtering
Spanning Tree Protocol
Dual Ethernet LANs
Basic Remote Bridging Examples
Figure 9. PB S200s Connecting LANs via an X.25/Frame Relay Link
Figure 10. Two-Port Bridges Connecting Multiple Token Ring LANs
Figure 11. Example of Bridges in an SVC Arrangement
Bridge Hardware Components in PathBuilder S200 Series Switches
Figure 12. LAN Port Module and WAN Adapter Module (Logical View)
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Setting Up WAN Operation for Bridging
Figure 13. Interface Connections Between WAN and LAN
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Configuring the PathBuilder S200 Series Switch for Bridging Operation
Bridge Parameters
Figure 14. Configure Bridge Parameters
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Bridge Link Parameters
Figure 15. Configure Bridge Link Menu
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LAN Connection Table
Figure 16. LAN Connection Table Menu
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Limiting Bridge Frame Sizes
Figure 17. How Packet Size Affects Transit Delay
Max Frame Size Line Speed Range (kbps)
Configuring Translational Bridging
38 Bridging
Configuring the PathBuilder S200 Series Switch for Bridging Operation
Figure 18. Translational Bridging Example
Figure 19. Translational Bridging Point-to-Point Example
Bridge Frame Handling
Configuring Source Route Bridging Operation
Figure 20. LAN/WAN Bridge Links Used in PathBuilder S200 Series Switch LAN Network
Page
Connecting a Station to a Server in Source Route Bridging
Figure 21. Example of a Station to Server Configuration
Figure 22. Servers Destination MAC Address Not on LAN AAA
Figure 23. All Route Explorer (ARE) Frame Searches the Network for the Server
Figure 24. PathBuilder S200 Series Switch Transfers a Copy of ARE Frame to the Bridge Module
Bridging 45
Configuring the PathBuilder S200 Series Switch for Bridging Operation
Figure 25. WAN Adapter Transmits Each ARE Frame Across the WAN
Figure 26. Server Responds with Specifically Routed TEST Frame
If... Then...
Transparent Bridging for Ethernet LANs
Bridging 49
Transparent Bridging for Ethernet LANs
Figure 27. How the Forwarder and Hardware Accelerator Process a Frame
NO NO
Figure 28. Relationship of Forwarder and Hardware Accelerator to LAN and WAN Handlers
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Forwarder Database and Spanning Tree
Using Filters
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Transparent Bridge Configuration Parameters
Figure 29. Transparent Bridge (TB) Forwarding Table Menu
Bridge Filtering
unnecessary
MAC Address Filtering
Parameter Action
Parameter Action (continued)
Parameter Value Action
60 Bridging
Bridge Filtering
Figure 30. MAC Address Filtering Action
MAC Filtering Process Figure30 shows the MAC Filtering process.
Figure 31. Example of a Frame Passing on a Bridge Link
MAC Address Filtering Examples
Figure 32. Example of Bridge Links Configured to Filter Selected MAC Address Frames
Parameter Values
Page
Identifying Address Links for MAC Addressing
Figure 33. Example of Address Links
MAC Wildcard Filtering
Figure 34. Example of How MAC Wildcard Filtering Works
Configuring the MAC Address Filter Table
Figure 35. MAC Address Filter Table Menu
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Protocol Filtering
Configuring the Protocol Filter Table
Figure 36. Configure Protocol Filter Table Menu
Protocol SAP (hex value)
Protocol OUI/IP (hex value)
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Figure 37. Protocol ID DSAP Located in LLC Field
Figure 38. SNAP Protocol ID
Parameter Action(s)
NetBIOS Name Filtering
Figure 39. NetBIOS Name Filtering Configuration Example
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Configuring NetBIOS Name Filtering
Figure 40. Bridge Link Parameters Record
Step Action
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Figure 41. Configure Bridge Menu
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NetBIOS Name Filtering Statistics
Figure 42. Detailed Bridge Link Statistics
NetBIOS Packet Formats
Spanning Tree Protocol Entity (STPE)
Configuration Menu STPE Control= AUTO STPE Control = MANUAL
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STPE Parameter Setting Considerations
Figure 43. Example of a Bridge Network
Figure 44. Example of Bridge ID and MAC Address
80-00 08-00-3E-02-53-8F MAC Address
Bridge Priority
Type of Network Speed STPE Path Cost
Figure 45. Bridge Links Within Network
Figure 46. Two Bridge Links Between B3 and B4
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Spanning Tree Timers
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Bridge Forward Delay Timer
Figure 47. Message Events in Network
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LLC2 Local Termination
Figure 48. Local Termination Example
Figure 49. Before Local Termination Example
Figure 50. After Local Termination Example
Figure 51. Example of Improper LT Configuration
Figure 52. Example of Proper LT Configuration
Type Name Description
Figure 53. Example of LT Spoofing
Local Termination spoofs:
Local Termination does not spoof:
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Configuring Local Termination
Step Action
Step Action (continued) Result
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Deleting LT Configuration Records
Mixed LAN Operation
Figure 54. Example of Mixed LAN Bridging in PathBuilder S24x, 26x, and 27x Switch
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Step Action (continued) Result/Description
Dual LAN Ethernet
Figure 55. Example of Multiple Ethernet LAN
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LAN Server Subsystem
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Configuring the LSS Record
Figure 56. LAN Server Subsystem (LSS) Record Menu
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Bridge Statistics
Figure 57. The Bridge Statistics Menu Screen
Spanning Tree Statistics
Figure 58. Spanning Tree Status
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Bridging 127
Detailed Bridge Link Statistics
Introduction Figure59 and Figure 60 show sample statistics screens.
Figure 60. Detailed Bridge Link Statistics - Second Page
Figure 59. Detailed Bridge Link Statistics - First Page
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Bridge Link Filter Summary
Figure 61. Bridge Link Filter Summary Status
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Transparent Bridge Forwarding Table Statistics
Figure 62. Transparent Bridge Forwarding Table Statistics
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Transparent Bridge Detailed Bridge Link Statistics
Figure 63. Detailed Bridge Link Statistics (TB) - Second Page
Term Description (continued)
LAN Connection Statistics
Figure 64. LAN Connection Statistics Menu Screen
Figure 65. Detailed LAN Connection Statistics - First Page
Figure 66. Detailed LAN Connection Statistics - Second Page
Bridging 137
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Figure 67. LAN Connection Summary Statistics
LLC2 LT Session Summary Statistics
Figure 68. Session Summary Statistics Screen
Heading Description
Page
Bridging 143
LLC2 LT Detailed Session Statistics
Figure 70. Detailed Session Statistics Screen - Page 2
Figure 69. Detailed Session Statistics Screen - Page 1
Heading Description
Local Station Session Summary
Heading Description (continued)
Remote Spoofer Session Summary
Heading Description (continued)
Reset Statistics
Page
Appendix A
Technical Support
Country Data Rate Telephone Number
Country Telephone Number Country Telephone Number
Country Telephone Number Fax Number
Index