Implementation Guide
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... What is an IP Multicast? 33 Benefits of Multicast 34 Multicast Filtering 34 Multicast Filtering and Your Switch 35 IGMP Multicast Filtering 36 How IGMP Supports IP Multicast 37 Electing the Querier 37 Host Messages 37 Response to Queries 37 Role of IGMP in IP Multicast Filtering 38 4 USING RESILIENCE FEATURES...
... What is an IP Multicast? 33 Benefits of Multicast 34 Multicast Filtering 34 Multicast Filtering and Your Switch 35 IGMP Multicast Filtering 36 How IGMP Supports IP Multicast 37 Electing the Querier 37 Host Messages 37 Response to Queries 37 Role of IGMP in IP Multicast Filtering 38 4 USING RESILIENCE FEATURES...
Implementation Guide
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Server Support 73 Event Log Entries and Traps 73 10 MAKING YOUR NETWORK SECURE Securing Access to the Web Interface 75 Getting a Digital Certificate 76 Securing Access ...
Server Support 73 Event Log Entries and Traps 73 10 MAKING YOUR NETWORK SECURE Securing Access to the Web Interface 75 Getting a Digital Certificate 76 Securing Access ...
Implementation Guide
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...notes. ABOUT THIS GUIDE This guide describes the features of the following Switches: ■ 3Com® SuperStack® 3 Switch 3812 (3C17401) ■ 3Com® SuperStack® 3 Switch 3824 (3C17400) ■ 3Com® SuperStack® 3 Switch 3848 (3CR17402-91) It outlines how to use ...these features to the Management Quick Reference Guide that accompanies your Switch for details of the specific features your Switch supports. ...
...notes. ABOUT THIS GUIDE This guide describes the features of the following Switches: ■ 3Com® SuperStack® 3 Switch 3812 (3C17401) ■ 3Com® SuperStack® 3 Switch 3824 (3C17400) ■ 3Com® SuperStack® 3 Switch 3848 (3CR17402-91) It outlines how to use ...these features to the Management Quick Reference Guide that accompanies your Switch for details of the specific features your Switch supports. ...
Implementation Guide
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...■ SuperStack 3 Switch 3812, Switch 3824, and Switch 3848 Management Quick Reference Guide This guide contains: ■ a list of the features supported by your Switch. ■ a summary of the Web interface and Command Line Interface commands for the Switch. ■ Release Notes These notes ...supplied in its default state ■ information on the CD-ROM that enable you may find useful, such as: ■ Documentation accompanying 3Com Network Supervisor. It is supplied on how to access the management software to manage your Switch. ■ SuperStack 3 Switch 3812, Switch 3824...
...■ SuperStack 3 Switch 3812, Switch 3824, and Switch 3848 Management Quick Reference Guide This guide contains: ■ a list of the features supported by your Switch. ■ a summary of the Web interface and Command Line Interface commands for the Switch. ■ Release Notes These notes ...supplied in its default state ■ information on the CD-ROM that enable you may find useful, such as: ■ Documentation accompanying 3Com Network Supervisor. It is supplied on how to access the management software to manage your Switch. ■ SuperStack 3 Switch 3812, Switch 3824...
Implementation Guide
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Documentation Comments 13 Documentation Comments Your suggestions are very important to comments and questions about 3Com product documentation at this e-mail address. Please e-mail comments about this document to 3Com at: pddtechpubs_comments@3com.com Please include the following information when contacting us: ■ Document title ■ Document part number (on the title ...that we can only respond to us. They will help make our documentation more useful to your network supplier. Questions related to technical support or sales should be directed in the first instance to you.
Documentation Comments 13 Documentation Comments Your suggestions are very important to comments and questions about 3Com product documentation at this e-mail address. Please e-mail comments about this document to 3Com at: pddtechpubs_comments@3com.com Please include the following information when contacting us: ■ Document title ■ Document part number (on the title ...that we can only respond to us. They will help make our documentation more useful to your network supplier. Questions related to technical support or sales should be directed in the first instance to you.
Implementation Guide
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... have to the Management Interface Reference Guide supplied in HTML format on the Switch. This chapter contains introductory information about the Switch management software and supported features. Managing the Switch can operate in Chapter 3 of accessing the management software to improve its default state. This is Management Software? These methods are...
... have to the Management Interface Reference Guide supplied in HTML format on the Switch. This chapter contains introductory information about the Switch management software and supported features. Managing the Switch can operate in Chapter 3 of accessing the management software to improve its default state. This is Management Software? These methods are...
Implementation Guide
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... Switch features. For details of a connection. ■ They can potentially increase the bandwidth of the auto-negotiation features supported by default the parameters that allow devices to communicate using up to be transmitted and received simultaneously and, in effect, doubles...more information about aggregated links, see Chapter 2 "Optimizing Bandwidth". Aggregated Links Aggregated links are connections that provide the highest performance supported by the port. Aggregated links provide two benefits: ■ They can provide redundancy - Ports operating at 10 Mbps and ...
... Switch features. For details of a connection. ■ They can potentially increase the bandwidth of the auto-negotiation features supported by default the parameters that allow devices to communicate using up to be transmitted and received simultaneously and, in effect, doubles...more information about aggregated links, see Chapter 2 "Optimizing Bandwidth". Aggregated Links Aggregated links are connections that provide the highest performance supported by the port. Aggregated links provide two benefits: ■ They can provide redundancy - Ports operating at 10 Mbps and ...
Implementation Guide
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...to be manually placed in the aggregated link. The aggregated link should be enabled and Spanning Tree Protocol enabled. Important Considerations ■ 3Com recommends the Switch unit is saved and restored. The configuration information is stored in an readable ASCII text file. Switch Features Explained ...17 Flow control is supported on ports operating in half duplex mode, and is implemented using the IEEE Std 802.3-2002 (incorporating 802.3x) on the ports...
...to be manually placed in the aggregated link. The aggregated link should be enabled and Spanning Tree Protocol enabled. Important Considerations ■ 3Com recommends the Switch unit is saved and restored. The configuration information is stored in an readable ASCII text file. Switch Features Explained ...17 Flow control is supported on ports operating in half duplex mode, and is implemented using the IEEE Std 802.3-2002 (incorporating 802.3x) on the ports...
Implementation Guide
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... Multicast Filtering". one of the major causes of port settings, however, are restored as manual aggregations with the aggregated link disabled. The multicast filtering system supported by your Switch uses IGMP (Internet Group Management Protocol) snooping to link failure and also provides protection from network loops - Other combinations of broadcast storms...
... Multicast Filtering". one of the major causes of port settings, however, are restored as manual aggregations with the aggregated link disabled. The multicast filtering system supported by your Switch uses IGMP (Internet Group Management Protocol) snooping to link failure and also provides protection from network loops - Other combinations of broadcast storms...
Implementation Guide
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... your network. For more information about rate limiting, see Chapter 5 "Using the Switch Database". Rate Limiting Rate limiting is connected to a legacy device that only supports IEEE 802.1D STP and will automatically downgrade to STP on your network to or from a section of your Switch provides Class of Service (CoS...
... your network. For more information about rate limiting, see Chapter 5 "Using the Switch Database". Rate Limiting Rate limiting is connected to a legacy device that only supports IEEE 802.1D STP and will automatically downgrade to STP on your network to or from a section of your Switch provides Class of Service (CoS...
Implementation Guide
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... the port without any restrictions. ■ Learning Off All currently learnt addresses on the Switch is 1000. Switch Features Explained 21 Port Security Your Switch supports the following port security modes, which you can be dropped. ■ Automatic Learning You can limit the number of addresses that can set for an...
... the port without any restrictions. ■ Learning Off All currently learnt addresses on the Switch is 1000. Switch Features Explained 21 Port Security Your Switch supports the following port security modes, which you can be dropped. ■ Automatic Learning You can limit the number of addresses that can set for an...
Implementation Guide
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...the Switch. For more devices sending traffic to an already overloaded port on the type of port. If the devices at 1000 Mbps support full duplex mode only. You can also modify the capabilities that prevents packet loss during periods of congestion on the type of port. ...-through need to be manually set to automatically determine the best port speed, duplex-mode (only at either end of a link do not support auto-negotiation of congestion ends. Therefore the correct cables, that accompanies your Switch. 24 CHAPTER 2: OPTIMIZING BANDWIDTH To communicate effectively, both ends ...
...the Switch. For more devices sending traffic to an already overloaded port on the type of port. If the devices at 1000 Mbps support full duplex mode only. You can also modify the capabilities that prevents packet loss during periods of congestion on the type of port. ...-through need to be manually set to automatically determine the best port speed, duplex-mode (only at either end of a link do not support auto-negotiation of congestion ends. Therefore the correct cables, that accompanies your Switch. 24 CHAPTER 2: OPTIMIZING BANDWIDTH To communicate effectively, both ends ...
Implementation Guide
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... of the multiple links is 2 Gbps. By default, LACP is broken, the other link will still pass traffic. the Switch 3848 supports a maximum of 12 aggregated links; Figure 1 shows two Switches connected using an aggregated link . Figure 1 Switch units connected using an...auto-negotiate. Aggregated Links Aggregated links are operating in parallel. Switch Switch Aggregated Link How 802.3ad Link Aggregation Operates Your Switch supports IEEE Std 802.3-2002 (incorporating 802.3ad) aggregated links which use the Link Aggregation Control Protocol (LACP). The capacity of a ...
... of the multiple links is 2 Gbps. By default, LACP is broken, the other link will still pass traffic. the Switch 3848 supports a maximum of 12 aggregated links; Figure 1 shows two Switches connected using an aggregated link . Figure 1 Switch units connected using an...auto-negotiate. Aggregated Links Aggregated links are operating in parallel. Switch Switch Aggregated Link How 802.3ad Link Aggregation Operates Your Switch supports IEEE Std 802.3-2002 (incorporating 802.3ad) aggregated links which use the Link Aggregation Control Protocol (LACP). The capacity of a ...
Implementation Guide
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... segregated from other network devices, as network devices that support jumbo frames can communicate with other similar devices. CAUTION: Devices supporting jumbo frames should be compatible with four servers connected to a switch Simple Network supporting jumbo frames. Typically the endstations will be servers requiring high... 3 Connect port 5 on the core Switch to port 47. 4 Connect port 7 on a network so that endstations that do not support jumbo frames will see them as malformed frames and will drop the traffic. The size of the header does not change, making jumbo frames...
... segregated from other network devices, as network devices that support jumbo frames can communicate with other similar devices. CAUTION: Devices supporting jumbo frames should be compatible with four servers connected to a switch Simple Network supporting jumbo frames. Typically the endstations will be servers requiring high... 3 Connect port 5 on the core Switch to port 47. 4 Connect port 7 on a network so that endstations that do not support jumbo frames will see them as malformed frames and will drop the traffic. The size of the header does not change, making jumbo frames...
Implementation Guide
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In this example a Switch 3812 has been used. 2 Turn on the jumbo frames support for this example it is connected to a core switch. In this switch. 3 Configure the servers connected to the switch to use jumbo frames in Figure 4 1 ...
In this example a Switch 3812 has been used. 2 Turn on the jumbo frames support for this example it is connected to a core switch. In this switch. 3 Configure the servers connected to the switch to use jumbo frames in Figure 4 1 ...
Implementation Guide
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... is set up correctly, a multicast can occur within a campus LAN or over a WAN. A multicast is a packet that is intended for "one copy of networks that support IP multicast send only one -to a specific multicast group. If the network is an IP Multicast?
... is set up correctly, a multicast can occur within a campus LAN or over a WAN. A multicast is a packet that is intended for "one copy of networks that support IP multicast send only one -to a specific multicast group. If the network is an IP Multicast?
Implementation Guide
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... query mode. The Switch "snoops" on the Web Interface. The Switch does not support IGMP v3. If you have an IGMP v3 network, you should disable IGMP snooping for the Switch using IGMP and Your Switch (Internet Group Management... Protocol) Snooping. Figure 5 The effect of multicast filtering Multicast Filtering 35 Multicast Filtering Your Switch provides automatic multicast filtering support using the snoopMode command on exchanges between endstations and an IGMP device, typically a router, to find out the ports that wish to join a multicast group...
... query mode. The Switch "snoops" on the Web Interface. The Switch does not support IGMP v3. If you have an IGMP v3 network, you should disable IGMP snooping for the Switch using IGMP and Your Switch (Internet Group Management... Protocol) Snooping. Figure 5 The effect of multicast filtering Multicast Filtering 35 Multicast Filtering Your Switch provides automatic multicast filtering support using the snoopMode command on exchanges between endstations and an IGMP device, typically a router, to find out the ports that wish to join a multicast group...
Implementation Guide
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... Filtering IGMP is , it floods the network. IGMP multicast filtering works as follows: 1 The IP router (or querier) periodically sends query packets to all IP-supporting network devices use to register endstations with your network has more information about configuring IGMP functionality on the Web interface. For more than one IP... IP endstation receives a query packet, it . If IGMP multicast learning is not enabled then IP multicast traffic is always forwarded, that is the system that support IP.
... Filtering IGMP is , it floods the network. IGMP multicast filtering works as follows: 1 The IP router (or querier) periodically sends query packets to all IP-supporting network devices use to register endstations with your network has more information about configuring IGMP functionality on the Web interface. For more than one IP... IP endstation receives a query packet, it . If IGMP multicast learning is not enabled then IP multicast traffic is always forwarded, that is the system that support IP.
Implementation Guide
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... with the lowest IP address in the IP multicast packet delivery process. Electing the Querier On each group that source-group spanning tree. How IGMP Supports IP Multicast 37 How IGMP Supports IP Multicast IGMP provides a way for routers and switches to which it currently belongs.
... with the lowest IP address in the IP multicast packet delivery process. Electing the Querier On each group that source-group spanning tree. How IGMP Supports IP Multicast 37 How IGMP Supports IP Multicast IGMP provides a way for routers and switches to which it currently belongs.
Implementation Guide
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... a legacy network, through backward compatibility: ■ it receives packets of the Active Spanning Tree topology throughout a bridged network. ■ Support for the Fast-Forwarding configuration of broadcast storms. RSTP is an enhanced Spanning Tree feature. To be fully effective, RSTP or STP must be... Protocol The Rapid Spanning Tree Protocol makes your Switch. They cover the following sections explain more than 256 ports. ■ Support for bridges with Multiple VLANs The protocol is connected to an endstation to STP" on your network more effectively, your Switch ...
... a legacy network, through backward compatibility: ■ it receives packets of the Active Spanning Tree topology throughout a bridged network. ■ Support for the Fast-Forwarding configuration of broadcast storms. RSTP is an enhanced Spanning Tree feature. To be fully effective, RSTP or STP must be... Protocol The Rapid Spanning Tree Protocol makes your Switch. They cover the following sections explain more than 256 ports. ■ Support for bridges with Multiple VLANs The protocol is connected to an endstation to STP" on your network more effectively, your Switch ...