Implementation Guide
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Switch 3812 and Switch 3824 Implementation Guide 3C17401, 3C17400 http://www.3com.com/ Part No. DUA1740-0BAA01 Published May 2003
Switch 3812 and Switch 3824 Implementation Guide 3C17401, 3C17400 http://www.3com.com/ Part No. DUA1740-0BAA01 Published May 2003
Implementation Guide
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... Automatic IP Configuration 12 Port Security 12 Aggregated Links 12 Auto-negotiation 12 Multicast Filtering 13 Spanning Tree Protocol and Rapid Spanning Tree Protocol 13 Switch Database 14 Traffic Prioritization 14 RMON 14 Broadcast Storm Control 15 VLANs 15 Configuration Save and Restore 15 2 OPTIMIZING BANDWIDTH Port Features 17 Duplex 17...
... Automatic IP Configuration 12 Port Security 12 Aggregated Links 12 Auto-negotiation 12 Multicast Filtering 13 Spanning Tree Protocol and Rapid Spanning Tree Protocol 13 Switch Database 14 Traffic Prioritization 14 RMON 14 Broadcast Storm Control 15 VLANs 15 Configuration Save and Restore 15 2 OPTIMIZING BANDWIDTH Port Features 17 Duplex 17...
Implementation Guide
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... 24 3 USING MULTICAST FILTERING What is an IP Multicast? 27 Benefits of Multicast 28 Multicast Filtering 28 Multicast Filtering and Your Switch 29 IGMP Multicast Filtering 30 4 USING RESILIENCE FEATURES Resilience Feature Overview 34 Spanning Tree Protocol (STP) 34 Rapid Spanning Tree Protocol...Example 39 STP Configurations 41 Using STP on a Network with Multiple VLANs 43 5 USING THE SWITCH DATABASE What is the Switch Database? 45 How Switch Database Entries Get Added 45 Switch Database Entry States 46 6 USING TRAFFIC PRIORITIZATION What is Traffic Prioritization? 48 How Traffic Prioritization ...
... 24 3 USING MULTICAST FILTERING What is an IP Multicast? 27 Benefits of Multicast 28 Multicast Filtering 28 Multicast Filtering and Your Switch 29 IGMP Multicast Filtering 30 4 USING RESILIENCE FEATURES Resilience Feature Overview 34 Spanning Tree Protocol (STP) 34 Rapid Spanning Tree Protocol...Example 39 STP Configurations 41 Using STP on a Network with Multiple VLANs 43 5 USING THE SWITCH DATABASE What is the Switch Database? 45 How Switch Database Entries Get Added 45 Switch Database Entry States 46 6 USING TRAFFIC PRIORITIZATION What is Traffic Prioritization? 48 How Traffic Prioritization ...
Implementation Guide
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... Default QoS Configurations 58 7 STATUS MONITORING AND STATISTICS RMON 59 What is RMON? 59 The RMON Groups 59 Benefits of RMON 61 RMON and the Switch 61 Alarm Events 62 8 SETTING UP VIRTUAL LANS What are VLANs? 63 Benefits of VLANs 64 VLANs and Your...: Tagged and Untagged Membership 66 VLAN Configuration Examples 67 Using Untagged Connections 67 Using 802.1Q Tagged Connections 68 9 USING AUTOMATIC IP CONFIGURATION How Your Switch Obtains IP Information 72 How Automatic IP Configuration Works 72 Automatic Process 72 Important Considerations 72 Server Support 73 Event Log Entries and Traps 73
... Default QoS Configurations 58 7 STATUS MONITORING AND STATISTICS RMON 59 What is RMON? 59 The RMON Groups 59 Benefits of RMON 61 RMON and the Switch 61 Alarm Events 62 8 SETTING UP VIRTUAL LANS What are VLANs? 63 Benefits of VLANs 64 VLANs and Your...: Tagged and Untagged Membership 66 VLAN Configuration Examples 67 Using Untagged Connections 67 Using 802.1Q Tagged Connections 68 9 USING AUTOMATIC IP CONFIGURATION How Your Switch Obtains IP Information 72 How Automatic IP Configuration Works 72 Automatic Process 72 Important Considerations 72 Server Support 73 Event Log Entries and Traps 73
Implementation Guide
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A CONFIGURATION RULES Configuration Rules for Gigabit Ethernet 75 Configuration Rules for Fast Ethernet 76 Configuration Rules with Full Duplex 77 B NETWORK CONFIGURATION EXAMPLES Simple Network Configuration Examples 80 Desktop Switch Example 80 Advanced Network Configuration Examples 81 Improving the Resilience of Your Network 81 Enhancing the Performance of Your Network 82 C IP ADDRESSING IP Addresses 83 Simple Overview 83 Advanced Overview 84 Subnets and Subnet Masks 86 Default Gateways 88 GLOSSARY INDEX
A CONFIGURATION RULES Configuration Rules for Gigabit Ethernet 75 Configuration Rules for Fast Ethernet 76 Configuration Rules with Full Duplex 77 B NETWORK CONFIGURATION EXAMPLES Simple Network Configuration Examples 80 Desktop Switch Example 80 Advanced Network Configuration Examples 81 Improving the Resilience of Your Network 81 Enhancing the Performance of Your Network 82 C IP ADDRESSING IP Addresses 83 Simple Overview 83 Advanced Overview 84 Subnets and Subnet Masks 86 Default Gateways 88 GLOSSARY INDEX
Implementation Guide
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...used to the Management Quick Reference Guide that accompanies your Switch or on the 3Com Web site. If release notes are shipped with communication protocols that accompanies your Switch for configuring, using, and managing the Switches. Refer to interconnect LANs. Most user guides and release...the Web interface operations and the Command Line Interface (CLI) commands that you require to manage the Switch please refer to the 3Com Switch 3812 (12-port, Managed Gigabit) and 3824 (24-port, Managed Gigabit). It assumes a working knowledge of local area network (LAN) operations ...
...used to the Management Quick Reference Guide that accompanies your Switch or on the 3Com Web site. If release notes are shipped with communication protocols that accompanies your Switch for configuring, using, and managing the Switches. Refer to interconnect LANs. Most user guides and release...the Web interface operations and the Command Line Interface (CLI) commands that you require to manage the Switch please refer to the 3Com Switch 3812 (12-port, Managed Gigabit) and 3824 (24-port, Managed Gigabit). It assumes a working knowledge of local area network (LAN) operations ...
Implementation Guide
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... us . They will help make our documentation more useful to you to manage the Switch. Related Documentation 9 Related Documentation Documentation Comments In addition to this document to 3Com at: pddtechpubs_comments@3com.com Please include the following : ■ Switch 3812 and Switch 3824 Getting Started Guide This guide contains: ■ all the information you may find useful...
... us . They will help make our documentation more useful to you to manage the Switch. Related Documentation 9 Related Documentation Documentation Comments In addition to this document to 3Com at: pddtechpubs_comments@3com.com Please include the following : ■ Switch 3812 and Switch 3824 Getting Started Guide This guide contains: ■ all the information you may find useful...
Implementation Guide
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...3com.com/register/ You will need your product part number (3Cxxxxx), product serial number and date and place of your requests at this e-mail address. 10 ABOUT THIS GUIDE Product Registration ■ Document part number (on the title page) ■ Page number (if appropriate) Example: ■ Switch 3812 and Switch 3824... Implementation Guide ■ Part number: DUA1740-0BAA01 ■ Page 25 Please note that we can now register your Switch on your product. Questions related to technical support or sales...
...3com.com/register/ You will need your product part number (3Cxxxxx), product serial number and date and place of your requests at this e-mail address. 10 ABOUT THIS GUIDE Product Registration ■ Document part number (on the title page) ■ Page number (if appropriate) Example: ■ Switch 3812 and Switch 3824... Implementation Guide ■ Part number: DUA1740-0BAA01 ■ Page 25 Please note that we can now register your Switch on your product. Questions related to technical support or sales...
Implementation Guide
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... Switch. Switch Features Explained This chapter contains introductory information about the Switch 3812 and Switch 3824 management software and supported features. This is Management Software? These methods are explained in HTML format on the Switch. their applications are several different methods of the Switch features. Your Switch... you with the capability to change and monitor the way it works, you require to manage the Switch please refer to manage the Switch. There are explained in more detail later in its efficiency and therefore the overall performance of the ...
... Switch. Switch Features Explained This chapter contains introductory information about the Switch 3812 and Switch 3824 management software and supported features. This is Management Software? These methods are explained in HTML format on the Switch. their applications are several different methods of the Switch features. Your Switch... you with the capability to change and monitor the way it works, you require to manage the Switch please refer to manage the Switch. There are explained in more detail later in its efficiency and therefore the overall performance of the ...
Implementation Guide
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... by the port. Aggregated links provide two benefits: ■ They can potentially increase the bandwidth of port speed. Port Security Your Switch supports the following port security modes, which you can manually configure the IP information. Aggregated Links Aggregated links are connections that provide the.... if one link is broken, the other links share the traffic for an individual port or a range of permanent addresses on the Switch is 1000. When auto-negotiation is forwarded through the port without any restrictions. ■ Secure All currently learnt addresses on the port ...
... by the port. Aggregated links provide two benefits: ■ They can potentially increase the bandwidth of port speed. Port Security Your Switch supports the following port security modes, which you can manually configure the IP information. Aggregated Links Aggregated links are connections that provide the.... if one link is broken, the other links share the traffic for an individual port or a range of permanent addresses on the Switch is 1000. When auto-negotiation is forwarded through the port without any restrictions. ■ Secure All currently learnt addresses on the port ...
Implementation Guide
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...are part of a predefined multicast group, rather than broadcasting the traffic to the whole network. Switch Features Explained 13 For details of the auto-negotiation features supported by your Switch uses IGMP (Internet Group Management Protocol) snooping to detect the endstations in effect, doubles the... causes of each multicast group to implement alternative paths for network traffic in full duplex mode. Flow Control All Switch ports support flow control, which multicast traffic should be transmitted and received simultaneously and, in each path. ■ Enable the most...
...are part of a predefined multicast group, rather than broadcasting the traffic to the whole network. Switch Features Explained 13 For details of the auto-negotiation features supported by your Switch uses IGMP (Internet Group Management Protocol) snooping to detect the endstations in effect, doubles the... causes of each multicast group to implement alternative paths for network traffic in full duplex mode. Flow Control All Switch ports support flow control, which multicast traffic should be transmitted and received simultaneously and, in each path. ■ Enable the most...
Implementation Guide
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...a pre-defined threshold is an industry standard feature for traffic monitoring and collecting network statistics. For more information about the Switch Database, see Chapter 6 "Using Traffic Prioritization". For more information about the LAN segments connected to your network to be ...forwarded. For more information about traffic prioritization, see Chapter 5 "Using the Switch Database". RMON Remote Monitoring (RMON) is exceeded. If you have a management workstation with minimum delay. STP conforms to the ...
...a pre-defined threshold is an industry standard feature for traffic monitoring and collecting network statistics. For more information about the Switch Database, see Chapter 6 "Using Traffic Prioritization". For more information about the LAN segments connected to your network to be ...forwarded. For more information about traffic prioritization, see Chapter 5 "Using the Switch Database". RMON Remote Monitoring (RMON) is exceeded. If you have a management workstation with minimum delay. STP conforms to the ...
Implementation Guide
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... without being restricted by physical connections - With VLANs, you can reset the Switch using the Switch's Command Line Interface is faulty or configured incorrectly. Important Considerations ■ 3Com recommends the Switch unit is reset to a pre-defined number of frames per second (threshold),... the broadcast traffic on a remote server, or to save and restore the Switch configuration. If the broadcast traffic level ...
... without being restricted by physical connections - With VLANs, you can reset the Switch using the Switch's Command Line Interface is faulty or configured incorrectly. Important Considerations ■ 3Com recommends the Switch unit is reset to a pre-defined number of frames per second (threshold),... the broadcast traffic on a remote server, or to save and restore the Switch configuration. If the broadcast traffic level ...
Implementation Guide
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... refer to be restored or saved by a single user at a time. ■ When using the Configuration Save and Restore feature, 3Com recommends that aggregated links are restored as manual aggregations with Link Aggregation Configuration Protocol (LACP) disabled on the CD-ROM that is disabled ... may be enabled and Spanning Tree Protocol enabled. Communication over an aggregated link, communication with the aggregated link disabled. 16 CHAPTER 1: SWITCH FEATURES OVERVIEW ■ The configuration can only be set up as required. Other combinations of port settings, however, are to the...
... refer to be restored or saved by a single user at a time. ■ When using the Configuration Save and Restore feature, 3Com recommends that aggregated links are restored as manual aggregations with Link Aggregation Configuration Protocol (LACP) disabled on the CD-ROM that is disabled ... may be enabled and Spanning Tree Protocol enabled. Communication over an aggregated link, communication with the aggregated link disabled. 16 CHAPTER 1: SWITCH FEATURES OVERVIEW ■ The configuration can only be set up as required. Other combinations of port settings, however, are to the...
Implementation Guide
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... devices at either end of the Web interface operations and the Command Line Interface (CLI) commands that 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. Duplex...this is done automatically. If the devices at either end of a link must use the same duplex mode. If you utilize certain Switch features you can optimize the bandwidth on the CD-ROM that accompanies your network and improve network performance. 2 OPTIMIZING BANDWIDTH There are ...
... devices at either end of the Web interface operations and the Command Line Interface (CLI) commands that 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. Duplex...this is done automatically. If the devices at either end of a link must use the same duplex mode. If you utilize certain Switch features you can optimize the bandwidth on the CD-ROM that accompanies your network and improve network performance. 2 OPTIMIZING BANDWIDTH There are ...
Implementation Guide
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....3x) for ports operating in full duplex mode, and Intelligent Flow Management (IFM) for the whole Switch, or per port basis, dependant on the type of congestion ends. Flow Control All Switch ports support flow control, which is disabled, the auto-MDIX feature does not operate on the... Switch. If auto-negotiation is a mechanism that is caused by inhibiting the transmitting port from generating more ...
....3x) for ports operating in full duplex mode, and Intelligent Flow Management (IFM) for the whole Switch, or per port basis, dependant on the type of congestion ends. Flow Control All Switch ports support flow control, which is disabled, the auto-MDIX feature does not operate on the... Switch. If auto-negotiation is a mechanism that is caused by inhibiting the transmitting port from generating more ...
Implementation Guide
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...In this example, if link 1 fails, the data flow between two devices (switch-to-switch or switch-to physical link 2. Figure 2 shows the simplest case: two member links, that a member link has If all Switch ports. The capacity of the multiple links is combined into one link is broken...occurs as soon as 1000BASE-TX and they are connections that link is dynamically reassigned to eight member links in parallel. Figure 1 Switch units connected using an aggregated link containing four member links. Aggregated Links 19 Aggregated Links Aggregated links are operating in full duplex,...
...In this example, if link 1 fails, the data flow between two devices (switch-to-switch or switch-to physical link 2. Figure 2 shows the simplest case: two member links, that a member link has If all Switch ports. The capacity of the multiple links is combined into one link is broken...occurs as soon as 1000BASE-TX and they are connections that link is dynamically reassigned to eight member links in parallel. Figure 1 Switch units connected using an aggregated link containing four member links. Aggregated Links 19 Aggregated Links Aggregated links are operating in full duplex,...
Implementation Guide
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...manually configure the aggregated links as LACP will override the manual configuration. Implementing 802.3ad Aggregated Links LACP can be enabled or disabled on Switch C to be able to be configured and managed via Web commands. For example, in two ways: ■ Manual Aggregations - ...20 CHAPTER 2: OPTIMIZING BANDWIDTH failed - You can be used to Switch B, but you will need to automatically detect and form an aggregation with 802.3ad enabled devices. As a result, aggregated link configurations are :...
...manually configure the aggregated links as LACP will override the manual configuration. Implementing 802.3ad Aggregated Links LACP can be enabled or disabled on Switch C to be able to be configured and managed via Web commands. For example, in two ways: ■ Manual Aggregations - ...20 CHAPTER 2: OPTIMIZING BANDWIDTH failed - You can be used to Switch B, but you will need to automatically detect and form an aggregation with 802.3ad enabled devices. As a result, aggregated link configurations are :...
Implementation Guide
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...aggregated link. There are made according to the number of six active aggregations can be added manually to any port is the cost assigned for Switch B, thus overriding the manual configuration. If LACP detects at that speed. A maximum of up to eight ports may be created. Aggregated Links... 21 member of an aggregated link for Switch A in error, LACP (if it will automatically assign a free un-configured aggregated link to form an aggregated link with the partner device. When ...
...aggregated link. There are made according to the number of six active aggregations can be added manually to any port is the cost assigned for Switch B, thus overriding the manual configuration. If LACP detects at that speed. A maximum of up to eight ports may be created. Aggregated Links... 21 member of an aggregated link for Switch A in error, LACP (if it will automatically assign a free un-configured aggregated link to form an aggregated link with the partner device. When ...
Implementation Guide
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...of the existing six aggregated links is , passing data. Figure 4 How LACP works on a Switch with multiple aggregated links Switch H X Switch A AL 1 AL 2 AL 3 AL 4 AL 5 AL 6 Switch B Switch C Switch D Switch E Switch F Switch G ■ When multiple links of different speed connect two devices only the highest speed links ... ■ A LinkUp / LinkDown trap will only be sent for an aggregation. 22 CHAPTER 2: OPTIMIZING BANDWIDTH ■ The Switch only supports a maximum of eight active ports in any individual aggregation. ■ If multiple links are connected between a unit ...
...of the existing six aggregated links is , passing data. Figure 4 How LACP works on a Switch with multiple aggregated links Switch H X Switch A AL 1 AL 2 AL 3 AL 4 AL 5 AL 6 Switch B Switch C Switch D Switch E Switch F Switch G ■ When multiple links of different speed connect two devices only the highest speed links ... ■ A LinkUp / LinkDown trap will only be sent for an aggregation. 22 CHAPTER 2: OPTIMIZING BANDWIDTH ■ The Switch only supports a maximum of eight active ports in any individual aggregation. ■ If multiple links are connected between a unit ...