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3Com 2924-PWR manual Defining Voice, Received unevenly. The system supports one Voice Vlan

Models: 2924-PWR

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Page 174

174CHAPTER 13: CONFIGURING QUALITY OF SERVICE

Defining Voice	Voice VLAN allows network administrators to enhance VoIP service by
VLAN	configuring ports to carry IP voice traffic from IP phones on a specific
	VLAN. VoIP traffic has a preconfigured OUI prefix in the source MAC
	address. Network Administrators can configure VLANs on which voice IP
	traffic is forwarded. Non-VoIP traffic is dropped from the Voice VLAN in
	auto Voice VLAN secure mode. Voice VLAN also provides QoS to VoIP,
	ensuring that the quality of voice does not deteriorate if the IP traffic is
	received unevenly. The system supports one Voice VLAN.
	There are two operational modes for IP Phones:
	■ IP phones are configured with VLAN-mode as enabled, ensuring that
	tagged packets are used for all communications.
	■ If the IP phone’s VLAN-mode is disabled, the phone uses untagged
	packets. The phone uses untagged packets while retrieving the initial
	IP address through DHCP. The phone eventually use the Voice VLAN
	and start sending tagged packets.

This section contains the following topics:

■Viewing Voice VLANs

■Defining Voice VLAN

■Defining Voice VLAN Port Settings

■Viewing Voice VLAN Port Definitions

■Viewing the OUI Summaries

■Modifying OUI Definitions

Image 174

3Com 2924-PWR manual Defining Voice, Received unevenly. The system supports one Voice Vlan, Start sending tagged packets

Contents

3Com Baseline Switch 2924-PWR Plus 3Com Corporation Campus Drive Marlborough User Guide OverviewManaging System Information Provides information for About this Guide Conventions RelatedDocumentation Contents Viewing Basic Settings Configuring Ports Configuring Igmp Snooping Managing Power Over Ethernet Devices Device Specifications and Features Glossary Getting Started Hardware Features 2924-PWR Hardware FeaturesSwitch 2924-PWR Plus 24-Port-front panel Indicators LED StatusDescribes the meanings of the LEDs System Installing SwitchManagement Setting Up forMethods of Managing a Switch Web Interface ManagementRefer to Setting Up Snmp Management V1 or V2 on Switch SetupRefer to Setting Up Web Interface Management on Snmp ManagementInitial Switch Setup and Management Flow Diagram Automatic IP Configuration using Dhcp Manual IP ConfigurationInterface CLI PrerequisitesConnecting the Workstation to the Switch Manually set the IP Address using the Console PortIpSetup xxx.xxx.xxx.xxx mmm.mmm.mmm.mmm ggg.ggg.ggg.gggg Getting Started Setting Up Web InterfaceChoosing a Browser Over the Network \ pingUpgrading Software using Enter yes and press Return. The system reboots the switchFollowing prompt displays Using the 3COM WEB Interface Web Interface Accessing the 3Com Web InterfaceStarting the 3Com Multi-Session Web ConnectionsEnter Network Password Web InterfaceUnderstanding 3Com Web Interface 3Com Web Interface HomeWeb Interface Components To access the Device Representation Click Device Summary Device ViewManagement Buttons Using Screen Viewing Configuration InformationTable Options Adding Configuration Information Click Administration IP Setup. The IP Setup Page opensModify the fields Click . The access fields are modified System Access ModifySystem Access Remove To save the device configuration ConfigurationLatest configuration to be saved to the flash memory Click . The configuration is savedResetting the Device Click Administration Reset. The Reset Page opensClick . a confirmation message is displayed User Name and Password Defaults Restoring FactoryTo log off the device Logging OffDevice ClickViewing Basic Settings To view the Device Summary Settings Click Device Summary. The Device Summary Page opensPage Click Device Summary Color Key. The Color Key Page opens Color KeyManaging Device Security Managing Device Security System Access Summary To define System Access InterfaceTo modify System Access Click . The Users are deleted, and the device is updated To remove usersTo configure the Radius client Managing Device Security Authentication Defining Port-Based802.1X Click Security 802.1X Summary. The 802.1X Summary Page opens Defining Port-Based Authentication 802.1X Global Settings Click Security 802.1X Setup. The 802.1X Setup Page opens802.1X Port Settings Managing Device Security To view MAC Based ACLs MAC Based ACL SummaryTo configure MAC-based ACLs Click Device ACL MAC Based ACL Setup. The MAC Based ACLMAC Based ACL Setup Page contains the following fields Add Rules to ACL Select Create ACL Modify To modify a MAC-based ACL ruleManaging Device Security Click Device ACL MAC Based ACL Remove. The MAC Based ACL MAC Based ACL Remove Page contains the following fieldsCheck Remove ACL IP Based ACL Summary Managing Device Security To configure IP-based ACLs IP Based ACL SetupManaging Device Security Defining Access Control Lists Select Create ACL Modify Rule IP Based ACL ModifyManaging Device Security Defining Access Control Lists Click Device ACL IP Based ACL Remove. The IP Based ACL IP Based ACL Remove Updated ACL Binding Summary ACL Binding Setup To define ACL BindingTo remove ACL Binding ACL Binding RemoveManaging Device Security Broadcast Storm Setup To define Broadcast Storm TrafficInformation Device View Managing System Information Page To configure the System Name System NameTo configure the System Time Local SettingsEnabled on the device System Time Setup Page contains the following fieldsManaging System Information Page Monitor users have no access to this To reset the device configuration Define the fields Click or . The device is resetConfiguring Ports Page To view Port Settings Port Administration Summary101 To configure Port Settings Port Administration Setup103 Click Port Administration Detail. The Port Detail Page opens To view Port Details105 Aggregating Ports Link Aggregation Summary To create Link Aggregation Blue Displays a member of the aggregation being createdDeselected ports Summary To modify Link Aggregation Link Aggregation Modify Page includes the following fieldsBlue Displays a member of the modified aggregation Summary To remove Link Aggregation Link Aggregation Remove Page includes the following fieldsLacp Summary Lacp Modify 115 Configuring Vlans Click Device Vlan Vlan Detail. The Vlan Detail Page opens VlanVlan Port Detail Create Click Device Vlan Setup. The Vlan Setup Page opensVlan Setup Page contains the following fields To create VLANsRename Vlan To edit Vlan Settings Click Device Vlan Modify VLAN. The Modify Vlan Page opensConfiguring Vlans To modify Port Vlan Settings Modify Vlan PortTo delete VLANs Click Device Vlan Remove. The Vlan Remove Page opensAddress Information IP Setup Page contains the following fields To define an IP interfaceConfiguring ARP Settings ARP Settings Summary To configure ARP entries ARP Settings SetupARP Settings Remove To remove ARP entriesConfiguring ARP Settings Databases is forwarded immediately to the port. The Dynamic ConfiguringAddress Tables Traffic is seen for a certain period, are erasedTable Settings To view address table settingsPort Summary Configuring Address Tables Address Table To add MAC addresses to the Address TableConfiguring Address Tables Address Table Setup Page contains the following field To define the Aging TimeTo remove ports Port RemoveConfiguring IP and MAC Address Information To remove MAC addresses from the Address Table Address Table RemoveConfiguring IP and MAC Address Information Configuring Igmp Snooping To configure Igmp Snooping Click Device Igmp Snooping Setup. The Igmp Snooping SetupOpens Select Enable or Disable from the Igmp Status list Configuring Spanning Tree Spanning Tree Summary Configuring Spanning Tree 149 Global Settings To configure Spanning Tree SetupSpanning Tree Setup Page contains the following fields Bridge Settings Designated Root To modify Spanning Tree Spanning Tree ModifyConfiguring Spanning Tree Configuring Snmp Snmp version Snmp version 2cSnmp Communities Setup To define Snmp communitiesInsert New Community Enables adding an Snmp community Snmp ManagementCommunity String To remove Snmp communities Snmp Communities RemoveSnmp Traps Setup To define Snmp trapsTo remove Snmp traps Snmp Traps RemoveSnmp Traps Remove Page contains the following fields Service Click Device QoS CoS Summary. The CoS Summary Page opens CoS SummaryTo configure CoS Settings Click Device QoS CoS Setup. The CoS Setup Page opensCoS to Queue Summary To configure CoS values to queues CoS to Queue SetupCan be assigned to queue To view the Dscp Queue Dscp to Queue SummaryBe assigned to queue To map CoS to QueuesClick Device QoS Trust Setup. The Trust Setup Page opens Trust SetupIngress Rate Limit Bandwidth SummaryEgress Shaping Rates To configure Bandwidth Settings Bandwidth Setup Page contains the following fieldsEgress Shaping Rate There are two operational modes for IP Phones Defining VoiceReceived unevenly. The system supports one Voice Vlan Tagged packets are used for all communicationsVoice Vlan Summary Voice Vlan Setup Voice Vlan Port Setup Device is updated Defining Voice Vlan To view Voice Vlan Port Detail Settings Voice Vlan Port DetailsTo view Voice Vlan OUI Settings OUI ListVoice Vlan OUI Summary Page contains the following fields Voice Vlan OUI Modify Page contains the following fields Voice Vlan OUI ModifyDefining Voice Vlan Managing System Files 185 Configuration Upload To backup System filesConfiguration Download To restore System filesTo download the software image Software DownloadActive Image Page contains the following fields Active ImageEthernet Devices Device Power Display Port PoE Summary Page displays the following informationPorts Power Display Click Port PoE Setup. The Port PoE Setup Page opens Managing Power Over Ethernet Devices Managing System Logs System Log Severity LevelsTo view Logging Logging DisplayLogging Setup To define Log ParametersManaging System Logs 199 Viewing Statistics To view Rmon statistics Port Statistics SummaryViewing Statistics 203 Managing Device Diagnostics Configuring Port Mirroring To enable port mirroring Port Mirroring SetupConfiguring Port Mirroring To remove port mirroring Port Mirroring RemoveViewing Cable DiagnosticsTo view cables diagnostics Copper cable attached to a portManaging Device Diagnostics Diagnostics To test cables3Com Network SupervisorAccess Manager DirectorManager HP OpenViewNetwork Node Application such as 3Com Enterprise Management Suite EMSEnvironmental PhysicalFeatures of the Baseline Switch 2924-PWR Plus ElectricalSwitch Features Interface with Crossover Mdix SSL Vlan PC-AT Serial Cable Null Modem Cable RJ-45 to RS-232 25-pinEthernet Port RJ-45 Pin Assignments 10/100 and 1000BASE-T RJ-45 connectionsEthernet Port RJ-45 Pin Assignments Problem TroubleshootingSolutions Problems Possible Cause Solution Contact 3Com With the Command Getting StartedLine Interface CLI Commands SessionsSyntax Default Configuration User GuidelinesExample Syntax ParametersSyntax Summary Default Configuration SummaryNo default IP address is defined for interfaces Following example displays an IP address configured manuallyUpgrade Tftp Server IP AddressDestination File NameFile Type Syntax Initialize Syntax Reboot Logout The Logout command terminates the CLI session Syntax Logout Default ConfigurationPassword The Password command changes the user’s password Syntax Password Default ConfigurationBoot Protocol Access Control ListAddress Resolution Service Dscp239 Group LAG Link Aggregation See Port Trunk MIBPort Authentication See Ieee Controller Access AuthenticationTerminal Access Remote243 Warranty Service BenefitsSolve Problems Online ServicesContact Us Access SoftwareDownloads Support and RepairCountry Telephone Number US and Canada Telephone Technical Support and Repair 800 876 Regulatory Notices