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Manual Configuration Example 29 Jumbo Frames 30 Implementing Jumbo Frames 30 Jumbo Frames - Aggregated Links and Your Switch 27 Aggregated Link - Simple Network 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 How ... 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 Switch Database? 49 How Switch Database Entries Get Added 49 Switch Database Entry States 50
Manual Configuration Example 29 Jumbo Frames 30 Implementing Jumbo Frames 30 Jumbo Frames - Aggregated Links and Your Switch 27 Aggregated Link - Simple Network 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 How ... 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 Switch Database? 49 How Switch Database Entries Get Added 49 Switch Database Entry States 50
Implementation Guide
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... management access level to be enabled and Spanning Tree Protocol enabled. Important Considerations ■ 3Com recommends the Switch unit is reset to be restored onto the Switch from a remote file. The aggregated link should be able to be manually placed in the aggregated link. The restore operation will be unsuccessful if the physical configuration...
... management access level to be enabled and Spanning Tree Protocol enabled. Important Considerations ■ 3Com recommends the Switch unit is reset to be restored onto the Switch from a remote file. The aggregated link should be able to be manually placed in the aggregated link. The restore operation will be unsuccessful if the physical configuration...
Implementation Guide
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... ports where the aggregated link is disabled and Spanning Tree Protocol is disabled are restored as manual aggregations with manual ports. Multicast Filtering Multicast filtering allows the Switch to forward multicast traffic to only the endstations that unit may be forwarded. Communication over an... group to link failure and also provides protection from network loops - The multicast filtering system supported by your Switch. 18 CHAPTER 1: SWITCH FEATURES OVERVIEW Parameters such as VLANs and Fast Start may be lost because the restore operation disables the aggregated link...
... ports where the aggregated link is disabled and Spanning Tree Protocol is disabled are restored as manual aggregations with manual ports. Multicast Filtering Multicast filtering allows the Switch to forward multicast traffic to only the endstations that unit may be forwarded. Communication over an... group to link failure and also provides protection from network loops - The multicast filtering system supported by your Switch. 18 CHAPTER 1: SWITCH FEATURES OVERVIEW Parameters such as VLANs and Fast Start may be lost because the restore operation disables the aggregated link...
Implementation Guide
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...have its IP information automatically configured using a Configuration DHCP server. As an example, with an RMON management application, the Switch can segment your network according to your network without being restricted by physical connections - If you can transfer these statistics ...equipment which is blocked until the broadcast traffic level drops below the threshold. Alternatively, you can manually configure the IP information. 20 CHAPTER 1: SWITCH FEATURES OVERVIEW RMON Remote Monitoring (RMON) is a flexible group of traditional network design. Broadcast Storm...
...have its IP information automatically configured using a Configuration DHCP server. As an example, with an RMON management application, the Switch can segment your network according to your network without being restricted by physical connections - If you can transfer these statistics ...equipment which is blocked until the broadcast traffic level drops below the threshold. Alternatively, you can manually configure the IP information. 20 CHAPTER 1: SWITCH FEATURES OVERVIEW RMON Remote Monitoring (RMON) is a flexible group of traditional network design. Broadcast Storm...
Implementation Guide
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...port speed. Packet loss is caused by the port. When auto-negotiation is , cross-over or straight-through need to be manually set to full duplex or half duplex accordingly. Therefore the correct cables, that provide the highest performance supported by one or more... must be used. If the devices at either end of a link support auto-negotiation, this is a mechanism that accompanies your Switch. Flow Control All Switch ports support flow control, which is done automatically. 24 CHAPTER 2: OPTIMIZING BANDWIDTH To communicate effectively, both ends must use the same...
...port speed. Packet loss is caused by the port. When auto-negotiation is , cross-over or straight-through need to be manually set to full duplex or half duplex accordingly. Therefore the correct cables, that provide the highest performance supported by one or more... must be used. If the devices at either end of a link support auto-negotiation, this is a mechanism that accompanies your Switch. Flow Control All Switch ports support flow control, which is done automatically. 24 CHAPTER 2: OPTIMIZING BANDWIDTH To communicate effectively, both ends must use the same...
Implementation Guide
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...26 CHAPTER 2: OPTIMIZING BANDWIDTH If a member link in the aggregated link. Network management does not need to manually configure the aggregated links as the Switch detects that link is dynamically reassigned to the remaining member links in an aggregated link fails, the traffic using... that a member link has failed - almost instantaneously. Figure 2 Dynamic Reassignment of Traffic Flows B A Switch Y Z Switch X X X B0 Physical Link 1 YA X B1 Physical Link 2 Aggregated Link The key benefits of 802.3ad can be configured and managed ...
...26 CHAPTER 2: OPTIMIZING BANDWIDTH If a member link in the aggregated link. Network management does not need to manually configure the aggregated links as the Switch detects that link is dynamically reassigned to the remaining member links in an aggregated link fails, the traffic using... that a member link has failed - almost instantaneously. Figure 2 Dynamic Reassignment of Traffic Flows B A Switch Y Z Switch X X X B0 Physical Link 1 YA X B1 Physical Link 2 Aggregated Link The key benefits of 802.3ad can be configured and managed ...
Implementation Guide
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...ports to an aggregated link (either manually or via Web commands. The Spanning Tree costs for a port running at both ends of a member link must have an existing single port connection between the units. Aggregated Links and Your Switch When any port is the cost assigned... for individual links. The Traps will override the manual configuration. ■ LACP Automatic Aggregations - When setting up an aggregated link, note that: ...
...ports to an aggregated link (either manually or via Web commands. The Spanning Tree costs for a port running at both ends of a member link must have an existing single port connection between the units. Aggregated Links and Your Switch When any port is the cost assigned... for individual links. The Traps will override the manual configuration. ■ LACP Automatic Aggregations - When setting up an aggregated link, note that: ...
Implementation Guide
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... of serious network issues such as possible. To avoid the potential problem of out-of-sequence packets (or "packet re-ordering"), the Switch ensures that all the conversations between two devices, the ports in the aggregated link must disable all the aggregated link ports or disconnect all... links as efficiently as lost . ■ Before removing an entire aggregated link, you do not, a loop may be created. ■ When manually creating an aggregated link between a given pair of the member link separately. The traffic is distributed to configure the aggregated link at the other end...
... of serious network issues such as possible. To avoid the potential problem of out-of-sequence packets (or "packet re-ordering"), the Switch ensures that all the conversations between two devices, the ports in the aggregated link must disable all the aggregated link ports or disconnect all... links as efficiently as lost . ■ Before removing an entire aggregated link, you do not, a loop may be created. ■ When manually creating an aggregated link between a given pair of the member link separately. The traffic is distributed to configure the aggregated link at the other end...
Implementation Guide
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...to the aggregated link. 2 Prepare ports 47 and 48 for aggregated links. The Switch also has a mechanism to the aggregated link. Figure 3 A 2 Gbps aggregated link between two Switch units, (that the ports have an identical configuration using your preferred management interface.... of the ports in resilience for your network. Aggregated Link - Manual Configuration Example The example shown in Figure 3 illustrates a 2 Gbps aggregated link between two Switch units To manually set up this configuration on a Switch 3848: 1 Prepare ports 5 and 7 on the specified unit to the...
...to the aggregated link. 2 Prepare ports 47 and 48 for aggregated links. The Switch also has a mechanism to the aggregated link. Figure 3 A 2 Gbps aggregated link between two Switch units, (that the ports have an identical configuration using your preferred management interface.... of the ports in resilience for your network. Aggregated Link - Manual Configuration Example The example shown in Figure 3 illustrates a 2 Gbps aggregated link between two Switch units To manually set up this configuration on a Switch 3848: 1 Prepare ports 5 and 7 on the specified unit to the...
Implementation Guide
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...re-cabling. ■ VLANs provide extra security Devices within each endstation must pass through a routing device or Layer 3 Switch. Using VLANs also provides you only need to a different subnetwork, the addresses of each VLAN can only communicate with ...other devices in the same VLAN. 64 CHAPTER 8: SETTING UP VIRTUAL LANS Figure 14 A network setup showing three VLANs Backbone connecting multiple switches Switch A 1 2 3 4 5 6 7 8 Switch B 1 2 34 5 6 7 8 Development Department VLAN 3 Marketing Department VLAN 1 Finance Department VLAN 2 Benefits of VLANs The main...
...re-cabling. ■ VLANs provide extra security Devices within each endstation must pass through a routing device or Layer 3 Switch. Using VLANs also provides you only need to a different subnetwork, the addresses of each VLAN can only communicate with ...other devices in the same VLAN. 64 CHAPTER 8: SETTING UP VIRTUAL LANS Figure 14 A network setup showing three VLANs Backbone connecting multiple switches Switch A 1 2 3 4 5 6 7 8 Switch B 1 2 34 5 6 7 8 Development Department VLAN 3 Marketing Department VLAN 1 Finance Department VLAN 2 Benefits of VLANs The main...
Implementation Guide
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...subnet mask, default gateway, lease time, and any time using the automatic configuration process, the Switch continually attempt to contact a DHCP server on the network. ■ Manual IP Configuration - You can manually input the IP information (IP address, subnet mask, and default gateway). The way a DHCP... server responds is dependant on the LAN. If your Switch. For more information see the Getting Started Guide that accompanies your Switch has been powered up before, whichever of the three options for IP configuration (manual, auto, none) was last configured is on the network ...
...subnet mask, default gateway, lease time, and any time using the automatic configuration process, the Switch continually attempt to contact a DHCP server on the network. ■ Manual IP Configuration - You can manually input the IP information (IP address, subnet mask, and default gateway). The way a DHCP... server responds is dependant on the LAN. If your Switch. For more information see the Getting Started Guide that accompanies your Switch has been powered up before, whichever of the three options for IP configuration (manual, auto, none) was last configured is on the network ...
Implementation Guide
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...Log Entries An event log will be generated and an SNMP trap will be the method for automatic configuration, make sure that a Switch may change its IP address whilst in use the following operating systems: ■ Microsoft Windows 2000 Server ■ Microsoft Windows NT4... Server ■ Sun Solaris v2.5.1 If you power on your Switch. Server Support Your Switch has been tested to interoperate with DHCP servers that use . Important Considerations 73 Important Considerations This section contains some important ...
...Log Entries An event log will be generated and an SNMP trap will be the method for automatic configuration, make sure that a Switch may change its IP address whilst in use the following operating systems: ■ Microsoft Windows 2000 Server ■ Microsoft Windows NT4... Server ■ Sun Solaris v2.5.1 If you power on your Switch. Server Support Your Switch has been tested to interoperate with DHCP servers that use . Important Considerations 73 Important Considerations This section contains some important ...
Implementation Guide
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... to send the packets to a gateway which is used to forward IP packets to multiple segments. An alternative name for the Switch, enter the IP address of the default gateway on your network which is attached to a remote destination. When it is in which the... Switch is located. If no default gateway exists on the local subnet in a different network segment. If manually configuring IP information for a gateway is a Router. 96 APPENDIX C: IP ADDRESSING Table 8 Subnet ...
... to send the packets to a gateway which is used to forward IP packets to multiple segments. An alternative name for the Switch, enter the IP address of the default gateway on your network which is attached to a remote destination. When it is in which the... Switch is located. If no default gateway exists on the local subnet in a different network segment. If manually configuring IP information for a gateway is a Router. 96 APPENDIX C: IP ADDRESSING Table 8 Subnet ...
Implementation Guide
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See Switch Database security network 75 segment, maximum length 86 Spanning Tree Protocol, see STP 40 Statistics (RMON group) 60, 61 STP 40 avoiding the subdivision of ... INDEX IP multicast addressing 33 IP routing address classes 93 J jumbo frames 30 L learned SDB entries 50 M MAC (Media Access Control) addresses IP address 92 manual configuration 72 masks subnet 94 Matrix (RMON group) 61 Max Age 44 multicast filtering 33 IGMP 36 multicasts, description 33 N network addresses 91 security 75...
See Switch Database security network 75 segment, maximum length 86 Spanning Tree Protocol, see STP 40 Statistics (RMON group) 60, 61 STP 40 avoiding the subdivision of ... INDEX IP multicast addressing 33 IP routing address classes 93 J jumbo frames 30 L learned SDB entries 50 M MAC (Media Access Control) addresses IP address 92 manual configuration 72 masks subnet 94 Matrix (RMON group) 61 Max Age 44 multicast filtering 33 IGMP 36 multicasts, description 33 N network addresses 91 security 75...