Implementation Guide
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... Alarm Events 62 8 SETTING UP VIRTUAL LANS What are VLANs? 63 Benefits of VLANs 64 VLANs and Your Switch 65 The Default VLAN 65 Communication Between VLANs 65 Creating New VLANs 66 VLANs: 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 ...
... Alarm Events 62 8 SETTING UP VIRTUAL LANS What are VLANs? 63 Benefits of VLANs 64 VLANs and Your Switch 65 The Default VLAN 65 Communication Between VLANs 65 Creating New VLANs 66 VLANs: 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 ...
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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... permanent addresses on the Switch is broken, the other links share the traffic for an individual port or a range of ports: ■ No Security Port security is disabled and all network traffic is enabled (default), a port "advertises" its IP information automatically configured using up... to auto-negotiate port speed, duplex-mode (only at 1000 Mbps only support full duplex mode. these capabilities are by default the parameters that allow devices to communicate...
... permanent addresses on the Switch is broken, the other links share the traffic for an individual port or a range of ports: ■ No Security Port security is disabled and all network traffic is enabled (default), a port "advertises" its IP information automatically configured using up... to auto-negotiate port speed, duplex-mode (only at 1000 Mbps only support full duplex mode. these capabilities are by default the parameters that allow devices to communicate...
Implementation Guide
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...default on the Switch 3812 and Switch 3824. You can enable or disable IGMP query mode for the Switch using IGMP and Your Switch (Internet Group Management Protocol) Snooping. The Switch "snoops" on exchanges between endstations and an IGMP device, typically a router, to find out the ports that may not follow the lowest IP... address election method. It also supports IGMP query mode. Snooping Mode Snooping Mode allows your Switch to forward multicast packets only to which it has the lowest IP address in the subnetwork to the appropriate ports....
...default on the Switch 3812 and Switch 3824. You can enable or disable IGMP query mode for the Switch using IGMP and Your Switch (Internet Group Management Protocol) Snooping. The Switch "snoops" on exchanges between endstations and an IGMP device, typically a router, to find out the ports that may not follow the lowest IP... address election method. It also supports IGMP query mode. Snooping Mode Snooping Mode allows your Switch to forward multicast packets only to which it has the lowest IP address in the subnetwork to the appropriate ports....
Implementation Guide
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... become so if its default VLAN, the Switch will only ever query on the default VLAN (VLAN1). This command will not be used on all LANs and VLANs that of any other IGMP queriers connected to the LAN or VLAN. The Switch 3812 and Switch 3824 are compatible with the lowest IP address becomes the querier. If...
... become so if its default VLAN, the Switch will only ever query on the default VLAN (VLAN1). This command will not be used on all LANs and VLANs that of any other IGMP queriers connected to the LAN or VLAN. The Switch 3812 and Switch 3824 are compatible with the lowest IP address becomes the querier. If...
Implementation Guide
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... level of service that uses the DiffServ Code Point (DSCP) field in the IP header to store the packet priority information. Differentiated Services (DiffServ) Traffic Marking DiffServ...802.1p Priority Level 0 1 2 3 4 5 6 7 IEEE 802.1D Traffic Type Best Effort (default) Background Standard (spare) Excellent Effort (business critical) Controlled Load (streaming multimedia) Video (interactive media), ...and jitter Network Control Reserved traffic The traffic marking and prioritization supported by the Switch using layer 2 information is normally optional in Ethernet networks. Refer to the...
... level of service that uses the DiffServ Code Point (DSCP) field in the IP header to store the packet priority information. Differentiated Services (DiffServ) Traffic Marking DiffServ...802.1p Priority Level 0 1 2 3 4 5 6 7 IEEE 802.1D Traffic Type Best Effort (default) Background Standard (spare) Excellent Effort (business critical) Controlled Load (streaming multimedia) Video (interactive media), ...and jitter Network Control Reserved traffic The traffic marking and prioritization supported by the Switch using layer 2 information is normally optional in Ethernet networks. Refer to the...
Implementation Guide
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...9632; DSCP uses the IP header of DiffServ over network traffic. Basic traffic prioritization classifies traffic based on layer 2 of the OSI 7 layer model, and the Switch will prioritize the received traffic...in the received packet. The Switch 3812 and Switch 3824 both support basic traffic prioritization. If it does not, then it . If for transmission through the Switch is as shown in Figure 14... across the Internet. ■ DSCP is backward compatible with IPV4 TOS, which is given a default 802.1p tag (which allows operation with any existing devices with a different 802.1D priority or...
...9632; DSCP uses the IP header of DiffServ over network traffic. Basic traffic prioritization classifies traffic based on layer 2 of the OSI 7 layer model, and the Switch will prioritize the received traffic...in the received packet. The Switch 3812 and Switch 3824 both support basic traffic prioritization. If it does not, then it . If for transmission through the Switch is as shown in Figure 14... across the Internet. ■ DSCP is backward compatible with IPV4 TOS, which is given a default 802.1p tag (which allows operation with any existing devices with a different 802.1D priority or...
Implementation Guide
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58 CHAPTER 6: USING TRAFFIC PRIORITIZATION Default QoS Configurations The Switch is pre-configured with the following settings: Table 7 Default traffic classifiers configured in your Switch Classifier Name Classifier Type 3Com NBX Voice-LAN EtherType 3Com NBX Voice-IP DSCP Internet DSCP Network Control Network Control DSCP Protocol Identifier 0x8868 46 48 56 IEEE 802.ID Priority 6 6 7 7 DSCP Marking 46 46 48 56
58 CHAPTER 6: USING TRAFFIC PRIORITIZATION Default QoS Configurations The Switch is pre-configured with the following settings: Table 7 Default traffic classifiers configured in your Switch Classifier Name Classifier Type 3Com NBX Voice-LAN EtherType 3Com NBX Voice-IP DSCP Internet DSCP Network Control Network Control DSCP Protocol Identifier 0x8868 46 48 56 IEEE 802.ID Priority 6 6 7 7 DSCP Marking 46 46 48 56
Implementation Guide
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... server settings. you select an option for the first time the IP configuration setting is set up for no IP configuration the Switch will not be able to respond to the process outlined. You can manually input the IP information (IP address, subnet mask, and default gateway). If a DHCP server is dependant on the network. ■...
... server settings. you select an option for the first time the IP configuration setting is set up for no IP configuration the Switch will not be able to respond to the process outlined. You can manually input the IP information (IP address, subnet mask, and default gateway). If a DHCP server is dependant on the network. ■...
Implementation Guide
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...may use any arbitrary IP address. 3Com suggests you use addresses in the series IP addresses have a unique IP address. If your network is a vast topic and there are structured. The topics covered are: ■ IP Addresses ■ Subnets and Subnet Masks ■ Default Gateways IP addressing is internal to...manage it across a network. The IP address can be assigned to your Switch to enable you wish to learn more in the example) identifies the device within the network. C IP ADDRESSING This chapter provides some background detail on the IP information that needs to be split into...
...may use any arbitrary IP address. 3Com suggests you use addresses in the series IP addresses have a unique IP address. If your network is a vast topic and there are structured. The topics covered are: ■ IP Addresses ■ Subnets and Subnet Masks ■ Default Gateways IP addressing is internal to...manage it across a network. The IP address can be assigned to your Switch to enable you wish to learn more in the example) identifies the device within the network. C IP ADDRESSING This chapter provides some background detail on the IP information that needs to be split into...
Implementation Guide
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... configure it to send the packets to a gateway which the Switch is located. This hop-by-hop process continues until the IP packets reach the remote destination. An alternative name for the Switch, enter the IP address of the default gateway on your network, enter the IP address 0.0.0.0 or leave the field blank. When it is...
... configure it to send the packets to a gateway which the Switch is located. This hop-by-hop process continues until the IP packets reach the remote destination. An alternative name for the Switch, enter the IP address of the default gateway on your network, enter the IP address 0.0.0.0 or leave the field blank. When it is...
Implementation Guide
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...77 Capture (RMON group) 61 Configuration Restore 15 Save 15 Contents 3 conventions notice icons, About This Guide 8 text, About This Guide 8 D default gateway 88 Default VLAN 65 Designated Bridge 38 Designated Bridge Port 38 INDEX 99 E event notification 14 Events (RMON group) 60, 61 extended network prefix 87 F Fast...802.1Q-1998 65 IEEE Std 802.3-2002 flow control 13, 18 IGMP default setting 29 query mode 29 snooping mode 29 IGMP multicast filtering 30 Internet addresses 83 InterNIC 84 IP (Internet Protocol) addresses 84 IP address 72, 83 classes of 85 defined 84 derivation 84 division of ...
...77 Capture (RMON group) 61 Configuration Restore 15 Save 15 Contents 3 conventions notice icons, About This Guide 8 text, About This Guide 8 D default gateway 88 Default VLAN 65 Designated Bridge 38 Designated Bridge Port 38 INDEX 99 E event notification 14 Events (RMON group) 60, 61 extended network prefix 87 F Fast...802.1Q-1998 65 IEEE Std 802.3-2002 flow control 13, 18 IGMP default setting 29 query mode 29 snooping mode 29 IGMP multicast filtering 30 Internet addresses 83 InterNIC 84 IP (Internet Protocol) addresses 84 IP address 72, 83 classes of 85 defined 84 derivation 84 division of ...
Implementation Guide
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...defined 86 example 86 numbering 87 subnets 86 subnetworking defined 86 subnet mask 86 sub-networks. See port costs permanent SDB entries 46 port costs, default 38 port security 12 port trunks example 24 priority in STP 37 Q QoS (see STP 34 Statistics (RMON group) 60, 61 STP ...subdivision of Service 14, 47 R Rapid Spanning Tree Protocol (RSTP) 13, 35 registered IP address, obtaining 84 Remote Monitoring. See subnets Switch Database 45 100 INDEX L learned SDB entries 46 M MAC (Media Access Control) addresses IP address 84 manual configuration 72 masks subnet 86 Matrix (RMON group) 61 Max Age ...
...defined 86 example 86 numbering 87 subnets 86 subnetworking defined 86 subnet mask 86 sub-networks. See port costs permanent SDB entries 46 port costs, default 38 port security 12 port trunks example 24 priority in STP 37 Q QoS (see STP 34 Statistics (RMON group) 60, 61 STP ...subdivision of Service 14, 47 R Rapid Spanning Tree Protocol (RSTP) 13, 35 registered IP address, obtaining 84 Remote Monitoring. See subnets Switch Database 45 100 INDEX L learned SDB entries 46 M MAC (Media Access Control) addresses IP address 84 manual configuration 72 masks subnet 86 Matrix (RMON group) 61 Max Age ...