Implementation Guide
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DUA1730-0BAA02 Published November 2002 SuperStack® 3 Switch 4200 Series Implementation Guide Generic guide for units in the SuperStack 3 Switch 4200 Series: 3C17300 3C17302 3C17304 http://www.3com.com/ Part No.
DUA1730-0BAA02 Published November 2002 SuperStack® 3 Switch 4200 Series Implementation Guide Generic guide for units in the SuperStack 3 Switch 4200 Series: 3C17300 3C17302 3C17304 http://www.3com.com/ Part No.
Implementation Guide
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...registered trademarks of any kind, either implied or expressed, including, but not limited to be registered in other countries. 3Com, the 3Com logo and SuperStack are registered in any form or by all products. Ensuring that all waste conforms to recognized environmental ...to recognized environmental standards. Improving our environmental record on paper that comes from time to time without written permission from 3Com Technologies. 3Com Technologies reserves the right to revise this documentation and to make changes in conjunction with the product as translation, ...
...registered trademarks of any kind, either implied or expressed, including, but not limited to be registered in other countries. 3Com, the 3Com logo and SuperStack are registered in any form or by all products. Ensuring that all waste conforms to recognized environmental ...to recognized environmental standards. Improving our environmental record on paper that comes from time to time without written permission from 3Com Technologies. 3Com Technologies reserves the right to revise this documentation and to make changes in conjunction with the product as translation, ...
Implementation Guide
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CONTENTS ABOUT THIS GUIDE Conventions 10 Related Documentation 11 Documentation Comments 11 Product Registration 12 1 SWITCH FEATURES OVERVIEW What is Management Software? 15 Switch Features Explained 15 Automatic IP Configuration 16 Port Security 16 Aggregated Links 16 Auto-negotiation 17 Multicast Filtering 17 Spanning Tree Protocol and Rapid Spanning Tree Protocol 18 Switch Database 18 Traffic Prioritization 18 RMON 19 Broadcast Storm Control 20 VLANs 20 2 OPTIMIZING BANDWIDTH Port Features 21 Duplex 21 Flow Control 22 Auto-negotiation 22 Smart Auto-sensing 23 Aggregated Links 24 How 802....
CONTENTS ABOUT THIS GUIDE Conventions 10 Related Documentation 11 Documentation Comments 11 Product Registration 12 1 SWITCH FEATURES OVERVIEW What is Management Software? 15 Switch Features Explained 15 Automatic IP Configuration 16 Port Security 16 Aggregated Links 16 Auto-negotiation 17 Multicast Filtering 17 Spanning Tree Protocol and Rapid Spanning Tree Protocol 18 Switch Database 18 Traffic Prioritization 18 RMON 19 Broadcast Storm Control 20 VLANs 20 2 OPTIMIZING BANDWIDTH Port Features 21 Duplex 21 Flow Control 22 Auto-negotiation 22 Smart Auto-sensing 23 Aggregated Links 24 How 802....
Implementation Guide
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Aggregated Links and Your Switch 27 Aggregated Link Example 30 3 USING MULTICAST FILTERING What is an IP Multicast? 33 Benefits of Multicast 34 Multicast Filtering 34 Multicast Filtering and Your Switch 35 IGMP Multicast Filtering 36 4 USING RESILIENCE FEATURES Spanning Tree Protocol (STP) 39 Rapid Spanning Tree Protocol (RSTP) 40 What is STP? 40 How STP Works 43 STP Requirements 43 STP Calculation 43 STP Configuration 44 STP Reconfiguration 44 How RSTP Differs to STP 45 STP Example 45 STP Configurations 46 Using STP on a Network with Multiple VLANs 48 5 USING THE SWITCH DATABASE What is the ...
Aggregated Links and Your Switch 27 Aggregated Link Example 30 3 USING MULTICAST FILTERING What is an IP Multicast? 33 Benefits of Multicast 34 Multicast Filtering 34 Multicast Filtering and Your Switch 35 IGMP Multicast Filtering 36 4 USING RESILIENCE FEATURES Spanning Tree Protocol (STP) 39 Rapid Spanning Tree Protocol (RSTP) 40 What is STP? 40 How STP Works 43 STP Requirements 43 STP Calculation 43 STP Configuration 44 STP Reconfiguration 44 How RSTP Differs to STP 45 STP Example 45 STP Configurations 46 Using STP on a Network with Multiple VLANs 48 5 USING THE SWITCH DATABASE What is the ...
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7 STATUS MONITORING AND STATISTICS RMON 57 What is RMON? 57 The RMON Groups 58 Benefits of RMON 58 RMON and the Switch 59 Alarm Events 60 The Default Alarm Settings 60 The Audit Log 61 Email Notification of Events 61 Hardware Status Monitoring 62 8 SETTING UP VIRTUAL LANS What are VLANs? 65 Benefits of VLANs 66 VLANs and Your Switch 67 The Default VLAN 67 Communication Between VLANs 68 Creating New VLANs 68 VLANs: Tagged and Untagged Membership 68 Placing a Port in a Single VLAN 69 VLAN Configuration Examples 70 Using Untagged Connections 70 Using 802.1Q Tagged Connections 71 9 USING AUTOMATIC...
7 STATUS MONITORING AND STATISTICS RMON 57 What is RMON? 57 The RMON Groups 58 Benefits of RMON 58 RMON and the Switch 59 Alarm Events 60 The Default Alarm Settings 60 The Audit Log 61 Email Notification of Events 61 Hardware Status Monitoring 62 8 SETTING UP VIRTUAL LANS What are VLANs? 65 Benefits of VLANs 66 VLANs and Your Switch 67 The Default VLAN 67 Communication Between VLANs 68 Creating New VLANs 68 VLANs: Tagged and Untagged Membership 68 Placing a Port in a Single VLAN 69 VLAN Configuration Examples 70 Using Untagged Connections 70 Using 802.1Q Tagged Connections 71 9 USING AUTOMATIC...
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Configuration Rules with Full Duplex 81 B NETWORK CONFIGURATION EXAMPLES Simple Network Configuration Examples 84 Segmentation Switch Example 84 Desktop Switch Example 85 Advanced Network Configuration Examples 86 Improving the Resilience of Your Network 86 Enhancing the Performance of Your Network 87 C IP ADDRESSING IP Addresses 89 Simple Overview 89 Advanced Overview 90 Subnets and Subnet Masks 92 Default Gateways 94 GLOSSARY INDEX
Configuration Rules with Full Duplex 81 B NETWORK CONFIGURATION EXAMPLES Simple Network Configuration Examples 84 Segmentation Switch Example 84 Desktop Switch Example 85 Advanced Network Configuration Examples 86 Improving the Resilience of Your Network 86 Enhancing the Performance of Your Network 87 C IP ADDRESSING IP Addresses 89 Simple Overview 89 Advanced Overview 90 Subnets and Subnet Masks 92 Default Gateways 94 GLOSSARY INDEX
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...) commands that you require to manage the Switch please refer to the Management Interface Reference Guide supplied in HTML format on the 3Com World Wide Web site: http://www.3com.com/ ABOUT THIS GUIDE This guide describes the features of the SuperStack® 3 Switch 4200 Series and outlines how to use these...
...) commands that you require to manage the Switch please refer to the Management Interface Reference Guide supplied in HTML format on the 3Com World Wide Web site: http://www.3com.com/ ABOUT THIS GUIDE This guide describes the features of the SuperStack® 3 Switch 4200 Series and outlines how to use these...
Implementation Guide
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10 ABOUT THIS GUIDE Conventions Table 1 and Table 2 list conventions that are used throughout this guide, you to : ■ Emphasize a point. ■ Denote a new term at the place where it appears on the screen. Syntax The word "syntax" means that alerts you must evaluate the syntax provided and then supply the appropriate values for . Do not press Return or Enter when an instruction simply says "type." Example: Words in italics Press Ctrl+Alt+Del Italics are used to potential personal injury Table 2 Text Conventions Convention Description Screen displays This ...
10 ABOUT THIS GUIDE Conventions Table 1 and Table 2 list conventions that are used throughout this guide, you to : ■ Emphasize a point. ■ Denote a new term at the place where it appears on the screen. Syntax The word "syntax" means that alerts you must evaluate the syntax provided and then supply the appropriate values for . Do not press Return or Enter when an instruction simply says "type." Example: Words in italics Press Ctrl+Alt+Del Italics are used to potential personal injury Table 2 Text Conventions Convention Description Screen displays This ...
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... information about this guide, each command and the different parameters available. Your suggestions are other publications you may find useful: ■ Online documentation accompanying the 3Com Network Supervisor application that is supplied in its default state ■ information on the CD-ROM that enable you . They will help make our documentation...
... information about this guide, each command and the different parameters available. Your suggestions are other publications you may find useful: ■ Online documentation accompanying the 3Com Network Supervisor application that is supplied in its default state ■ information on the CD-ROM that enable you . They will help make our documentation...
Implementation Guide
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... can now register your network supplier. Questions related to technical support or sales should be directed in the first instance to comments and questions about 3Com product documentation at this e-mail address. 12 ABOUT THIS GUIDE Product Registration Please include the following information when contacting us: ■ Document title ■ Document...
... can now register your network supplier. Questions related to technical support or sales should be directed in the first instance to comments and questions about 3Com product documentation at this e-mail address. 12 ABOUT THIS GUIDE Product Registration Please include the following information when contacting us: ■ Document title ■ Document...
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I SWITCH FEATURES Chapter 1 Switch Features Overview Chapter 2 Optimizing Bandwidth Chapter 3 Using Multicast Filtering Chapter 4 Using Resilience Features Chapter 5 Using the Switch Database Chapter 6 Using Traffic Prioritization Chapter 7 Status Monitoring and Statistics Chapter 8 Setting Up Virtual LANs Chapter 9 Using Automatic IP Configuration
I SWITCH FEATURES Chapter 1 Switch Features Overview Chapter 2 Optimizing Bandwidth Chapter 3 Using Multicast Filtering Chapter 4 Using Resilience Features Chapter 5 Using the Switch Database Chapter 6 Using Traffic Prioritization Chapter 7 Status Monitoring and Statistics Chapter 8 Setting Up Virtual LANs Chapter 9 Using Automatic IP Configuration
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Your Switch can help you with the capability to access the management software that accompanies your Switch. There are explained in more detail later in HTML format on the Switch. For a list of the features supported by the Switch, and to change the default state of some of these features - The management software provides you to the Management Interface Reference Guide supplied in this guide. However, to make full use of the Getting Started Guide that accompanies your Switch, please refer to manage the Switch. These methods are explained in its efficiency and ...
Your Switch can help you with the capability to access the management software that accompanies your Switch. There are explained in more detail later in HTML format on the Switch. For a list of the features supported by the Switch, and to change the default state of some of these features - The management software provides you to the Management Interface Reference Guide supplied in this guide. However, to make full use of the Getting Started Guide that accompanies your Switch, please refer to manage the Switch. These methods are explained in its efficiency and ...
Implementation Guide
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The Switch tries each method in the range 169.254.1.0 to 169.254.254.255. ■ Bootstrap Protocol (BOOTP) For ease of a connection. ■ They can be shared amongst the remaining link(s). On the Switch 4200 Series, aggregated links are connections that have full duplex connections operating at the same speed. This provides automatic, point-to-point redundancy between these three automatic configuration methods. Your Switch supports the IEEE 802.3ad Link Aggregation Control Protocol (LACP). For more information about how the automatic IP configuration ...
The Switch tries each method in the range 169.254.1.0 to 169.254.254.255. ■ Bootstrap Protocol (BOOTP) For ease of a connection. ■ They can be shared amongst the remaining link(s). On the Switch 4200 Series, aggregated links are connections that have full duplex connections operating at the same speed. This provides automatic, point-to-point redundancy between these three automatic configuration methods. Your Switch supports the IEEE 802.3ad Link Aggregation Control Protocol (LACP). For more information about how the automatic IP configuration ...
Implementation Guide
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Ports operating at 10 Mbps and 100 Mbps) and flow control. The multicast filtering system supported by your Switch uses IGMP (Internet Group Management Protocol) snooping to be transmitted and received simultaneously and, in effect, doubles the potential throughput of a link. Switch Features Explained 17 Auto-negotiation Auto-negotiation allows ports to auto-negotiate port speed, duplex-mode (only at 1000 Mbps only support full duplex mode. When auto-negotiation is enabled (default), a port "advertises" its higher speed to the lower supported speed to provide an error-free connection ...
Ports operating at 10 Mbps and 100 Mbps) and flow control. The multicast filtering system supported by your Switch uses IGMP (Internet Group Management Protocol) snooping to be transmitted and received simultaneously and, in effect, doubles the potential throughput of a link. Switch Features Explained 17 Auto-negotiation Auto-negotiation allows ports to auto-negotiate port speed, duplex-mode (only at 1000 Mbps only support full duplex mode. When auto-negotiation is enabled (default), a port "advertises" its higher speed to the lower supported speed to provide an error-free connection ...
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Switch Database The Switch Database is an integral part of the Switch and is used by default. one of the major causes of broadcast storms. STP allows you to implement alternative paths for network traffic in each path. ■ Enable the most efficient path. ■ Disable the less efficient paths. ■ Enable one of the less efficient paths if the most efficient path fails. RSTP can restore a network connection quicker than the STP feature. Traffic Prioritization Traffic prioritization allows your network more information about the Switch Database, see Chapter 5 "...
Switch Database The Switch Database is an integral part of the Switch and is used by default. one of the major causes of broadcast storms. STP allows you to implement alternative paths for network traffic in each path. ■ Enable the most efficient path. ■ Disable the less efficient paths. ■ Enable one of the less efficient paths if the most efficient path fails. RSTP can restore a network connection quicker than the STP feature. Traffic Prioritization Traffic prioritization allows your network more information about the Switch Database, see Chapter 5 "...
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The traffic prioritization feature supported by using layer 2 information, is compatible with an RMON management application, the Switch can transfer these statistics to prioritize particular applications or traffic types. Quality of Service (QoS) enables you to your workstation on a different queue from lower priority traffic. This enables you to send you have different priorities across the network. By default, all traffic is an industry standard feature for different traffic classifications. If needed, you can be taken one step further by your Switch to specify service ...
The traffic prioritization feature supported by using layer 2 information, is compatible with an RMON management application, the Switch can transfer these statistics to prioritize particular applications or traffic types. Quality of Service (QoS) enables you to your workstation on a different queue from lower priority traffic. This enables you to send you have different priorities across the network. By default, all traffic is an industry standard feature for different traffic classifications. If needed, you can be taken one step further by your Switch to specify service ...
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This system prevents the overwhelming broadcast traffic that can segment your network according to a pre-defined number of broadcast traffic on the same physical segment. a limitation of devices that can segment your network without being restricted by physical connections - As an example, with VLANs you can be located anywhere in a network, but which is a system that monitors the level of frames per second (threshold), the broadcast traffic on the port is blocked until the broadcast traffic level drops below the threshold. 20 CHAPTER 1: SWITCH FEATURES OVERVIEW For more...
This system prevents the overwhelming broadcast traffic that can segment your network according to a pre-defined number of broadcast traffic on the same physical segment. a limitation of devices that can segment your network without being restricted by physical connections - As an example, with VLANs you can be located anywhere in a network, but which is a system that monitors the level of frames per second (threshold), the broadcast traffic on the port is blocked until the broadcast traffic level drops below the threshold. 20 CHAPTER 1: SWITCH FEATURES OVERVIEW For more...
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In normal operation, you require to manage the Switch please refer to the Management Interface Reference Guide supplied in effect, doubles the potential throughput of these ports, for most users. Half duplex only allows packets to be transmitted and received simultaneously and, in HTML format on your Switch. Port Features The default state for all the features detailed below provides the best configuration for example, if you can provide the following benefits to your network and end users: ■ Increased bandwidth ■ Quicker connections ■ Faster ...
In normal operation, you require to manage the Switch please refer to the Management Interface Reference Guide supplied in effect, doubles the potential throughput of these ports, for most users. Half duplex only allows packets to be transmitted and received simultaneously and, in HTML format on your Switch. Port Features The default state for all the features detailed below provides the best configuration for example, if you can provide the following benefits to your network and end users: ■ Increased bandwidth ■ Quicker connections ■ Faster ...
Implementation Guide
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these capabilities are connecting to automatically determine the best port speed, duplex-mode (only at 10 Mbps and 100 Mbps) and flow control. Therefore, if you wish to disable auto-negotiation you must ensure you are by default the parameters that is implemented using the IEEE 802.3x standard on ports operating in auto-MDIX mode. Ports operating at 1000 Mbps support full duplex mode only. Flow control is supported on the Switch. For auto-negotiation to work, ports at both ends must be set to full duplex or half duplex accordingly. Auto-negotiation Auto-...
these capabilities are connecting to automatically determine the best port speed, duplex-mode (only at 10 Mbps and 100 Mbps) and flow control. Therefore, if you wish to disable auto-negotiation you must ensure you are by default the parameters that is implemented using the IEEE 802.3x standard on ports operating in auto-MDIX mode. Ports operating at 1000 Mbps support full duplex mode only. Flow control is supported on the Switch. For auto-negotiation to work, ports at both ends must be set to full duplex or half duplex accordingly. Auto-negotiation Auto-...
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For example, smart auto-sensing can detect this and adjust the link accordingly. If both ends of operation when the link is lost or the unit is power cycled. ■ Smart auto-sensing can only be configured for the whole Switch and not on a per port basis. An SNMP Trap is sent every time a port is at a fixed speed. Conditions that affect smart auto-sensing: ■ Smart auto-sensing will reset to a lower speed. The link will not operate on links that the cable cannot sustain; In other words, auto-negotiation may "agree" upon a configuration that do not support smart ...
For example, smart auto-sensing can detect this and adjust the link accordingly. If both ends of operation when the link is lost or the unit is power cycled. ■ Smart auto-sensing can only be configured for the whole Switch and not on a per port basis. An SNMP Trap is sent every time a port is at a fixed speed. Conditions that affect smart auto-sensing: ■ Smart auto-sensing will reset to a lower speed. The link will not operate on links that the cable cannot sustain; In other words, auto-negotiation may "agree" upon a configuration that do not support smart ...