Implementation Guide
Page 30
...remaining member links in an aggregated link fails, the traffic using an aggregated link . 3Com recommends that a member link has failed - By default, LACP is disabled on all Switch ports. In this means that have full duplex connections operating at the same speed. If... instantaneously. Using manual aggregations to connect to ensure maximum resilience on all Switch ports. The re-mapping occurs as soon as 100BASE-TX and they are extremely resilient and fault-tolerant. Figure 1 Switch units connected using that is dynamically reassigned to physical link 2. As a...
...remaining member links in an aggregated link fails, the traffic using an aggregated link . 3Com recommends that a member link has failed - By default, LACP is disabled on all Switch ports. In this means that have full duplex connections operating at the same speed. If... instantaneously. Using manual aggregations to connect to ensure maximum resilience on all Switch ports. The re-mapping occurs as soon as 100BASE-TX and they are extremely resilient and fault-tolerant. Figure 1 Switch units connected using that is dynamically reassigned to physical link 2. As a...
Implementation Guide
Page 65
... UDP sockets to communicate. Traffic Marking After traffic has been identified through classification, it must be mapped to the eight IEEE 802.1p priority levels. a layer 3 marking scheme. The Switch uses two of the industry-standard methods of application generated the packet. IEEE 802.1D Traffic Marking... levels are defined in the IEEE 802.1Q 4-byte tag, which determines the level of service that other devices such as Layer 4 switching. By examining the socket number in the LAN. Refer to Table 6 for an example of how different traffic types can determine what type...
... UDP sockets to communicate. Traffic Marking After traffic has been identified through classification, it must be mapped to the eight IEEE 802.1p priority levels. a layer 3 marking scheme. The Switch uses two of the industry-standard methods of application generated the packet. IEEE 802.1D Traffic Marking... levels are defined in the IEEE 802.1Q 4-byte tag, which determines the level of service that other devices such as Layer 4 switching. By examining the socket number in the LAN. Refer to Table 6 for an example of how different traffic types can determine what type...
Implementation Guide
Page 66
... can configure how you to establish more control over IEEE 802.1D are: s You can choose how your Switch to treat selected applications and types of traffic, by the Switch using layer 2 information is only supported on a LAN and not across the Internet. DSCP is part of...tag in the packet. Without this tag, the scheme cannot work. Differentiated Services (DiffServ) Traffic Marking DiffServ is a Layer 3 marking scheme that map to them. s It is compatible with the relevant sections of a packet and therefore priority is normally optional in the IP header to implement IEEE ...
... can configure how you to establish more control over IEEE 802.1D are: s You can choose how your Switch to treat selected applications and types of traffic, by the Switch using layer 2 information is only supported on a LAN and not across the Internet. DSCP is part of...tag in the packet. Without this tag, the scheme cannot work. Differentiated Services (DiffServ) Traffic Marking DiffServ is a Layer 3 marking scheme that map to them. s It is compatible with the relevant sections of a packet and therefore priority is normally optional in the IP header to implement IEEE ...
Implementation Guide
Page 68
... 8 levels is used in Figure 15. Figure 15 IEEE 802.1p priority levels and recommended IEEE 802.1D traffic types Ingress Port Switch 4400 802.1p Service Levels Best Effort 0 Traffic Classification 802.1D Background 1 Spare 2 Business Critical 3 Multimedia 4 Video 5 Voice 6...each of which relates to traffic queue in order of QoS. The priority levels and their mappings to the Switch 4400 SE Enhanced Software Upgrade (3C17207). By default, the SuperStack 3 Switch 4400 SE supports a basic level of increasing priority. 68 CHAPTER 6: USING TRAFFIC PRIORITIZATION not ...
... 8 levels is used in Figure 15. Figure 15 IEEE 802.1p priority levels and recommended IEEE 802.1D traffic types Ingress Port Switch 4400 802.1p Service Levels Best Effort 0 Traffic Classification 802.1D Background 1 Spare 2 Business Critical 3 Multimedia 4 Video 5 Voice 6...each of which relates to traffic queue in order of QoS. The priority levels and their mappings to the Switch 4400 SE Enhanced Software Upgrade (3C17207). By default, the SuperStack 3 Switch 4400 SE supports a basic level of increasing priority. 68 CHAPTER 6: USING TRAFFIC PRIORITIZATION not ...
Implementation Guide
Page 69
...modify and assign the appropriate DSCP and 802.1D service level markings to that determines which traffic queue the packet is treated by the Switch once it is mapped to the traffic that tag. The four common methods of classification are not QoS-aware and do not apply a service level to... for layer 2, 3 and 4 attributes to classify and mark the traffic. The DSCP field in the IP packet header can look in the Switch. It is this 802.1p value that incoming traffic. Advanced Traffic Prioritization Incoming traffic can use its own rules to identify incoming traffic. How ...
...modify and assign the appropriate DSCP and 802.1D service level markings to that determines which traffic queue the packet is treated by the Switch once it is mapped to the traffic that tag. The four common methods of classification are not QoS-aware and do not apply a service level to... for layer 2, 3 and 4 attributes to classify and mark the traffic. The DSCP field in the IP packet header can look in the Switch. It is this 802.1p value that incoming traffic. Advanced Traffic Prioritization Incoming traffic can use its own rules to identify incoming traffic. How ...
Implementation Guide
Page 70
... and marking Ingress Port Classification DSCP TCP/UDP IP Addr EtherType Switch 4400 Configured Marking and Service Levels Remarking Service Level DSCP 802.1D Service Level DSCP 802.1D Service Level DSCP 802.1D Service Level DSCP 802.1D Discard Mapping is predefined and not configurable 802.1p Priority 1 2 0... Address, Protocol) to identify the traffic. 2 The classification in an incoming packet will be compared with the predefined classifications in the Switch, and if there is a match, the configured service level associated with the classified traffic will be applied. 3 The service level ...
... and marking Ingress Port Classification DSCP TCP/UDP IP Addr EtherType Switch 4400 Configured Marking and Service Levels Remarking Service Level DSCP 802.1D Service Level DSCP 802.1D Service Level DSCP 802.1D Service Level DSCP 802.1D Discard Mapping is predefined and not configurable 802.1p Priority 1 2 0... Address, Protocol) to identify the traffic. 2 The classification in an incoming packet will be compared with the predefined classifications in the Switch, and if there is a match, the configured service level associated with the classified traffic will be applied. 3 The service level ...
Implementation Guide
Page 72
...and so the level of a Classifier and service level. the next step is the 802.1p tag that map to service levels, which then remark to consider the following points: s Your Switch: s Has a predefined Classifier for some examples of rules that can be made up of service for ease...it is what defines how a particular traffic type should be treated by other parts of use. 3Com Network Supervisor automatically configures all QoS-capable 3Com Switches in Table 8 on page 74. 3 Create a QoS Profile - QoS in your Switch uses the DSCP values to a QoS profile. 4 Apply a QoS profile - It is to...
...and so the level of a Classifier and service level. the next step is the 802.1p tag that map to service levels, which then remark to consider the following points: s Your Switch: s Has a predefined Classifier for some examples of rules that can be made up of service for ease...it is what defines how a particular traffic type should be treated by other parts of use. 3Com Network Supervisor automatically configures all QoS-capable 3Com Switches in Table 8 on page 74. 3 Create a QoS Profile - QoS in your Switch uses the DSCP values to a QoS profile. 4 Apply a QoS profile - It is to...
Implementation Guide
Page 73
...applied to note that will configure all devices in Table 7. Use a comprehensive QoS management package, such as 3Com Network Supervisor, that not all QoS devices are configured the same way. s Use Switches and hardware-based routers that does not support QoS, it can cause bottlenecks. The ideal place for Ethernet.... All devices in the data path that understand both the IEEE 802.1D (incorporating IEEE 802.1p) and DSCP marking schemes. s Can map between IEEE 802.1D and DSCP to -end prioritization cannot be prioritized in one section in the network should not be created.
...applied to note that will configure all devices in Table 7. Use a comprehensive QoS management package, such as 3Com Network Supervisor, that not all QoS devices are configured the same way. s Use Switches and hardware-based routers that does not support QoS, it can cause bottlenecks. The ideal place for Ethernet.... All devices in the data path that understand both the IEEE 802.1D (incorporating IEEE 802.1p) and DSCP marking schemes. s Can map between IEEE 802.1D and DSCP to -end prioritization cannot be prioritized in one section in the network should not be created.
Implementation Guide
Page 76
...6: USING TRAFFIC PRIORITIZATION Table 9 Example QoS profile rules Rule Example Port-based Set all traffic received on the network. Priority re-mapping Mark the 802.1D priority of each packet on a port according to a particular DiffServ Code Point (DSCP). To find these ...has solutions addressing the blocking of network games and the prioritization of publication) For additional troubleshooting information and technical solutions visit the 3Com Knowledgebase. Other Configuration Examples and Guidelines For an explanation of how to Block MP3 Streaming from the Internet, please refer to ...
...6: USING TRAFFIC PRIORITIZATION Table 9 Example QoS profile rules Rule Example Port-based Set all traffic received on the network. Priority re-mapping Mark the 802.1D priority of each packet on a port according to a particular DiffServ Code Point (DSCP). To find these ...has solutions addressing the blocking of network games and the prioritization of publication) For additional troubleshooting information and technical solutions visit the 3Com Knowledgebase. Other Configuration Examples and Guidelines For an explanation of how to Block MP3 Streaming from the Internet, please refer to ...
Implementation Guide
Page 142
... of Ethernet is 10 Mbps, the bandwidth of Fast Ethernet is started. collision A term used to faulty network devices. A protocol that lets you to automatically map an IP address to a given MAC address each time a device is 100 Mbps, and the bandwidth of frequently accessed objects locally to users and serves...
... of Ethernet is 10 Mbps, the bandwidth of Fast Ethernet is started. collision A term used to faulty network devices. A protocol that lets you to automatically map an IP address to a given MAC address each time a device is 100 Mbps, and the bandwidth of frequently accessed objects locally to users and serves...
Implementation Guide
Page 143
... The process of sending a packet toward its IP address. Gigabit Ethernet IEEE standard 802.3z for reliable file transfer. This system maps a numerical Internet Protocol (IP) address to an already overloaded port on your network, you enter the name of the device, ...See router. Ethernet A LAN specification developed jointly by inhibiting devices from generating more meaningful and easy-to access another device on a Switch. Flow control prevents packet loss by Xerox, Intel and Digital Equipment Corporation. 143 DNS Domain Name System. A port security feature...
... The process of sending a packet toward its IP address. Gigabit Ethernet IEEE standard 802.3z for reliable file transfer. This system maps a numerical Internet Protocol (IP) address to an already overloaded port on your network, you enter the name of the device, ...See router. Ethernet A LAN specification developed jointly by inhibiting devices from generating more meaningful and easy-to access another device on a Switch. Flow control prevents packet loss by Xerox, Intel and Digital Equipment Corporation. 143 DNS Domain Name System. A port security feature...
Implementation Guide
Page 144
...802.1Q-1998 A standard that signal can be extended. IGMP snooping A mechanism performed by an intermediate device, such as a Layer 2 Switch, that defines link aggregation. 802.3ad is now incorporated into the relevant sections of multicast traffic. Hubs are similar to repeaters, in 1963... into the relevant sections of Electrical and Electronics Engineers. An organization responsible for providing engineering solutions for IGMP messages and build mapping tables and associated forwarding filters, in addition to transmitted and received, but not at the same time. IEEE Institute of ...
...802.1Q-1998 A standard that signal can be extended. IGMP snooping A mechanism performed by an intermediate device, such as a Layer 2 Switch, that defines link aggregation. 802.3ad is now incorporated into the relevant sections of multicast traffic. Hubs are similar to repeaters, in 1963... into the relevant sections of Electrical and Electronics Engineers. An organization responsible for providing engineering solutions for IGMP messages and build mapping tables and associated forwarding filters, in addition to transmitted and received, but not at the same time. IEEE Institute of ...