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3Com 5500G, 4210, 4200G manual DNS Configuration Guide

Models: 4210 5500 5500G 4200G

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332CHAPTER 37: DNS CONFIGURATION GUIDE

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3Com 5500G, 4210, 4200G manual DNS Configuration Guide

Contents

3Com Stackable Switch Family 3Com Corporation Campus Drive Marlborough, MA USA Contents Port Binding Configuration Guide 17 802.1X Configuration Guide XRN Configuration Guide VLAN-VPN Configuration Guide 3COM Stackable Switches Advanced Configuration Guide About this Guide ConventionsRelated DocumentationProducts Supported by this Document SKUProducts Supported by this Document About this Guide Login Configuration Guide # Enable the Telnet service on VTYIs manage level level Applicable Products# Set the history command buffer size to 20 for VTY # Set the idle-timeout time of VTY 0 to 6 minutes# Set the authentication password to 123456 in plain text # Enter VTY 0 user interface viewPrecautions None Telnet# Set the history command buffer size to 20 for AUX # Set the idle-timeout time of AUX 0 to 6 minutesConfigure the authentication mode for console login Requirements Applicable Products# Set the authentication mode to scheme for console login # Enter AUX 0 user interface viewConfiguring Login Access Control Configuration for Snmp login control by source IP address Configuration for WEB login control by source IP addressLogin Configuration Guide Vlan Configuration Guide ConfiguringNetwork Diagram Port-Based VlanComplete Configuration Configuration on Switch a Configuration on Switch BPrecautions Protocol-Based VlanBe disconnected Assign packets to a Vlan by protocolCreate Vlan 200 and add Ethernet 1/0/12 to Vlan Vlan 200 is numberedConfiguring Protocol-Based Vlan Vlan Configuration Guide IP Address IP Address Configuration GuideConfiguration Guide Interface has obtained an IP address through Bootp or Dhcp That they can communicate with each otherTo 172.16.2.1 on the hosts in subnet 172.16.2.0/24 # Ping Host B on Host a to verify the connectivityVoice Vlan Configuration Guide Configuring VoicePacket with the voice Vlan ID automatically Voice VlanConfiguration Procedure # Create Vlan 2 and Vlan # Configure Vlan 2 as the voice Vlan# Configure Ethernet 1/0/1 as a trunk port # Enable voice Vlan on Ethernet 1/0/1# Enable voice Vlan on Ethernet 1/0/2 TrafficPrecautions Gvrp Configuration Guide Networking Configuration RequirementsConfiguration Procedure Configure Switch a Configure Switch D # Create Vlan Configure Switch E# Display the dynamic Vlan information on Switch B # Display the dynamic Vlan information on Switch ESwitchE-Ethernet1/0/1 gvrp registration forbidden Configuration on Switch E Configuration on Switch CConfiguration on Switch D Gvrp Configuration Guide Port Basic Configuration Guide Configuring the Basic Functions of an Ethernet Port# Enter Ethernet port view of Ethernet 1/0/1 # Configure Vlan 100 as the default Vlan of Ethernet 1/0/1Complete Configuration # Link Aggregation Configuration Guide Configuring LinkAggregation NetworkingConfiguration Procedure Manual aggregation mode # Create manual aggregation groupComplete Configuration Manual aggregation modeStatic Lacp aggregation mode Dynamic Lacp aggregation modeLink Aggregation Configuration Guide Port Isolation Configuration Guide Configuring PortNetworking Configuration Requirements Applicable Products IsolationIsolation group that they have joined if any Need to perform the configuration manually for each of themIsolation group automatically Port Security Configuration Guide Configuration Procedure # Enter system viewSecurity autolearn ModeSecurity Mac-authentication Mode Configure Radius parameters # Create a Radius scheme named radius1# Set aabbcc.net as the default user domain # Specify the ISP domain for MAC authentication# Set the port security mode to mac-authentication # Create a domain named aabbcc.net and enter its viewUserlogin-withoui SecurityMirroring, fabric port, or link aggregation Unique identifier OUI value to pass the portApplicable Products Configure port security # Enable port security # Set the port security mode to userlogin-withoui# Set the maximum number of users of the ISP domain to # Create a local user# Configure port security trapping Configuring Port Security mac-else-userlogin-secure-ext Mode 3Com-isp-aabbcc.net scheme radius-scheme radius1 # Set the NeedToKnow mode of the port to ntkonly # Set the maximum number of concurrent 802.1x usersPort Security Configuration Guide Port Binding Configuration Guide # Enter Ethernet 1/0/1 port view on switch aComplete Configuration 3Com MAC Address Table Management Configuration Guide MAC address entry will make the Vlan become a static Vlan Command. Otherwise, the entry will not be added# Add a static MAC address entry Both of the switches support Dldp Dldp Configuration GuideConfiguring Dldp # Enable Dldp globally # Configure Dldp to operate in enhanced mode# Restore the ports brought down by Dldp # Set the interval for sending Dldp packets to 15 secondsConfiguring Dldp Dldp Configuration Guide Auto Detect Configuration Guide Static Routing# Create detected group # Configure a static route to Switch CConfigure Switch C # Enter system view Auto Detect ImplementationSwitchA system-view SwitchA detect-group Complete Configuration Configure Switch a # Configure an IP address for VLAN-interface# Set the Vrrp priority of Switch B to Vlan Interface Auto Detect Implementation in Vlan Interface Backup Must already exist on Switch C Ip address 10.1.1.4 Auto Detect Configuration Guide Mstp Configuration Guide Configuring MstpConfiguration on Switch a # Enter MST region view # Activate the MST region configuration manually# Specify Switch a as the root bridge of Msti Configuration on Switch B # Enter MST region viewConfiguration on Switch D # Enter MST region view Configuration on Switch C # Configure the MST region# Specify Switch C as the root bridge of Msti Network diagram for VLAN-VPN tunneling configuration VLAN-VPN TunnelingConfiguration on Switch a # Enable Mstp Configuration on Switch B # Enable MstpConfiguration on Switch C # Enable Mstp # Enable VLAN-VPN tunnelingConfiguration on Switch D # Enable Mstp Configuration on Switch a# Add the trunk port Ethernet 1/0/2 to all the VLANs # Add Ethernet 1/0/2 to VlanForwarded along the same spanning tree Configuring RstpNetwork topology to become stable Switch 8800 or Switch # Enable the TC-BPDU attack guard function on Switch a # Enable the root guard function on each designated port 3Com interface Ethernet 1/0/3 3Com-Ethernet1/0/3 stp disable Configuring Digest Snooping and Rapid Transition # Enable digest snooping on the root port Ethernet 1/0/1 # Set the priority of Switch B to# Enable digest snooping on Switch B # Enable rapid transition on the root port Ethernet 1/0/1 # Set the priority of Switch C to# Enable digest snooping on Switch C # Enable digest snooping on the root port Ethernet 1/0/2Configuring Digest Snooping and Rapid Transition Mstp Configuration Guide Routing Configuration Guide Configuring StaticRoutes To the peer on each deviceConfiguration Procedure Configure the switches Configure the hostsConfiguring RIP Routing protocolsConfigure Switch C # Configure RIP # Configure RIPConfigure Switch B # Configure RIP Perform the following configuration on Switch B Configuring Ospf # Disable the interfaces from sending Ospf packets # Enable the interfaces in the specified areas to run OspfPerform the following configuration on Switch B Perform the following configuration on Switch D Network Diagram Figure Network diagram for DR/BDR election# Assign a router ID to Switch a # Configure an IP address for the Vlan interfaceConfigure Switch B # Assign a router ID to Switch B # Assign a DR priority to the Vlan interfaceConfigure Switch C # Assign a router ID to Switch C Configure Switch D # Assign a router ID to Switch DArea Network 196.1.1.0 Configuration Routing table size Requirements Backbone areaTotally Stub area Nssa area# Configure Ospf for the backbone area Perform the following configuration on Switch a ABRs/ASBRsPerform the following configuration on Switch B Configuration information when area 1 is a stub area Configuration information when area 1 is a totally stub area Nssa AreaNetwork diagram for totally Nssa area configuration Configuration procedure is omitted Nssa area configuration 1 area 1 is an Nssa areaNssa area configuration 3 area 1 is an Nssa area # Configure area 1 as an Nssa areaNssa area configuration 2 area 1 is an Nssa area Vlan Interface Vlan-interface100 Ip address 10.1.1.2 Perform the following configuration on Switch C Configuration Route SummarizationSingle route and distribute it to other areas RoutersNetwork diagram for route summarization configuration Routes through route summarizationABR route summarization configuration # Redistribute the static routesAsbr route summarization configuration Based on Ospf basic configuration and area configuration onPerform the following configuration From being advertised to any other areaNetwork 20.1.1.0 0.0.0.255 nssa Area Network 10.1.1.0 Configure Asbr route summarization on Switch D Configure Switch C Ip route-static 1.1.7.0 255.255.255.0 30.1.2.2 preference Configure Switch D This case, configuring Ospf virtual links is a solution Virtual LinkConfigure a virtual link # Configure Switch a Configure Ospf basic functions # Configure Switch a# Configure Switch B Perform the following configuration on Switch B # Configure three static routes # Configure the IP address of the interface # Configure an ACL# Configure a routing policy # Apply ACL 2000 to filter the advertised routes # Redistribute static routesSwitchA-ospf-1 asbr-summary 30.0.0.0 255.0.0.0 not-advertise Ip address 10.0.0.2 Ospf Area Network 10.0.0.0 Routing Configuration Guide Multicast Configuration Guide Configuring IgmpSnooping Control multicast groupsConfiguring Router a Configuring Switch a# Enable Igmp Snooping globally Verifying the configurationConfiguration on Switch a System view otherwise the configuration will not succeedConfiguring Igmp Snooping Only Querier# Enable Igmp Snooping querier in Vlan # Enable dropping unknown multicast packetsConfiguring Switch B Configuring Switch CVerifying the configuration Complete Configuration Configuration on Switch a Configuration on Switch B Configuration on Switch COstA OstB Receive multicast packets through VlanConfigure Switch B # Enable Igmp Snooping globally SwitchB-vlan10 igmp-snooping enable SwitchB-vlan10 quit Configuring PIM-SM plus Igmp plus Igmp Snooping Configuring PIM-SM plus Igmp plus Igmp Snooping Mode may vary depending on user requirements Configuration PlanConfiguring multicast protocols Requirement AnalysisHost C and verify the configurations made on the switches Two switches# On Switch F, enable Igmp Snooping globally and in Vlan # View the PIM neighboring relationships on Switch E # View the BSR information on Switch E# View the RP information on Switch E # View the PIM routing table on Switch a# View the PIM routing table on Switch E Configuring simulated joining As shown above, Host a and Host C can receive multicast dataComplete Configuration Configuration on Switch a Configuration on Switch F Configuration on Switch DConfiguration on Switch E Configuring PIM-DM plus Igmp Dense mode Network Diagram Network diagram for PIM-DM configurationVerifying the configuration Multicast routing-enable Interface Vlan-interface101 Configuring Anycast RP Application Network Diagram Network diagram for anycast RP configuration Configuring Anycast RP Application Configuring Msdp peers # Configure an Msdp peer on Switch C# Configure an Msdp peer on Switch F # View the brief Msdp peer information on Switch F# View the PIM routing information on Switch F again Complete Configuration Configuration on Switch CConfiguration on Switch F 802.1X Configuration Guide Access ControlConfiguration Procedure # Enable 802.1x globally # Enable 802.1x on Ethernet 1/0/1# Specify the maximum number of users of the user domain to Precautions AAA Configuration Guide Configuring RadiusAuthentication for Telnet Users# Associate the ISP domain with the Radius scheme # Configure an ISP domain# Configure a Radius scheme Configuring Dynamic AuthenticationConfiguration of the domain cams Vlan Assignment# Configure the ISP domain abc as the default ISP domain # Enable guest Vlan on the port# Enabled # Enable 802.1x in interface viewConfiguring Local Hardware capacity# Configure a local user named telnet System domainTelnet users Users through communicating with Tacacs serversConfiguration Procedure # Configure a Hwtacacs scheme # Configure domain hwtacacs to use Hwtacacs scheme hwtacConfiguring EAD Dynamically control their access rightsEntire network According to the source IP addresses of the packets# Specify the IP address of the security policy server Quit Domain system Radius-scheme cams Usernameasmacaddress usernameformat command to set the MAC MAC Authentication Configuration GuideConfiguring MAC # Create an ISP domain named aabbcc.net Set the service type to lan-access# Enable MAC authentication globally Configuring MAC Authentication MAC Authentication Configuration Guide Vrrp Configuration Guide LSW BConfigure Switch a # Configure Vlan # Set the priority of Switch a in the Vrrp group to# Configure preemptive mode for the Vrrp group Configure Switch B # Configure VlanConfigurations on Switch B Host a Host C # Create Vrrp group # Set the priority of Switch a in Vrrp group 1 to# Set the priority of Switch B in Vrrp group 2 to Vrrp Interface TrackingVrrp Interface Tracking # Set the interface to be tracked Network Diagram Network diagram for Vrrp port tracking # Configure VLAN-interface Complete Configuration On the master Vrrp Configuration Guide Dhcp Configuration Guide Configuration Procedure # Enable Dhcp # Enable unauthorized Dhcp server detectionDhcp Server Global Address Pool Configuration Guide Dhcp Server Interface Address Pool Configuration Guide SwitchA-Vlan-interface1 dhcp select interface Requirements # Map VLAN-interface 1 to Dhcp server groupDhcp Snooping Configuration Procedure # Enable Dhcp snooping on the switch # Specify Ethernet 1/0/5 as a trusted portConfiguration Guide Configuration Procedure # Create Vlan# Enable Dhcp accounting # Enter Ethernet 1/0/1 view and add the port to Vlan# Enter Ethernet 1/0/2 view and add the port to Vlan # Create an address pool on the Dhcp serverConfiguration Requirements Applicable Products Dhcp ClientInterface Vlan-interface1 Ip address dhcp-alloc ACL Configuration Guide Configuring BasicACLs Numbers of basic ACLs range from 2000 toRules conflict, the last assigned rule takes effective # Apply ACL 3000 to Ethernet 1/0/1 # Apply ACL 4000 to Ethernet 1/0/1 Configuring # Apply ACL 5000 to Ethernet 1/0/1 Specific fields of packetsCannot be greater than 79 bytes Are numbered from Offset1 to Offset8ARP ACL Configuration Guide QOS/QOS Profile Configuration Guide Configuring Traffic Policing and LRConfigure traffic policing and LR Policing action issued the last takes effect# Define a rule to match the packets with source IP address Kbps, and drop the packets exceeding the rate limitConfiguring Priority Marking and Queue Scheduling 3Com qos cos-local-precedence-map 0 1 2 3 4 5 6 Precautions Note that Configuring Traffic Redirection and Traffic Accounting Configuring Traffic Redirection and Traffic Accounting Configuring QoS Profile Configuring QoS Profile # Enable Passed authenticationDefault mode Cannot be applied in the user-based modeWEB Cache Redirection Configuration Guide Cache RedirectionWEB Cache Redirection Configuration Guide Configuring Web Cache Redirection WEB Cache Redirection Configuration Guide Mirroring Configuration Guide Configuration Procedure Configure Switch C # Create a local mirroring groupRemote port mirroring application Network Diagram Network diagram for remote port mirroring # Configure Vlan 10 as the remote-probe Vlan Configuration on the source switch Switch a Configuration on the intermediate switch Switch BConfiguration on the destination switch Switch C Configuration Traffic Mirroring237 Mirroring Configuration Guide XRN Configuration Guide ConfigurationFabric Cable Connection Fabric cable connection mode of Switch 5500sFabric cable connection mode of Switch 5500Gs switches # Configure the unit name as Unit1 Configure Switch a # Bring up the fabric ports# Configure the unit ID as # Configure the unit name as Unit2 # Configure the fabric name as helloConfigure Switch B # Bring up the fabric ports XRN fabric configuration on Switch 5500Gs switches Configurations on Switch a Complete Configuration Complete configuration on the SwitchComplete configuration on Switch 5500Gs switches XRN Fabric Configuration XRN Configuration Guide Cluster Configuration Guide # Enable Ntdp globally and on Ethernet 1/0/1 # Enable the cluster function# Configure the IP address for VLAN-interface 2 as # Disable NDP on Ethernet 1/0/1 of the management device# Enable NDP on Ethernet 1/0/2 and Ethernet 1/0/3 # Set the holdtime of NDP information to 200 seconds# Set the topology collection range to two hops # Set the topology collection interval to three minutes# Name and build a cluster Configurations on the management device Precautions# Configure the IP address of VLAN-interface 3 as Connection information of the management switch# Configure the IP address of VLAN-interface 2 as Cluster Member switches Switch B is connected to Switch E through Ethernet 1/0/3Switch B is connected to Switch F through Ethernet 1/0/4 # Enable Ntdp globally# Set the holdtime of NDP information to 300 seconds Aaa0.3Com-cluster tftp-server Aaa0.3Com-cluster snmp-host Complete Configuration Implement power supply and data transmission simultaneously POE/POE Profile Configuration GuidePoE Configuration SwitchA poe power-management auto Features of PoE profile PoE ProfileSwitchA system-view SwitchA poe-profile Profile1 # Create Profile2 and enter PoE profile view Precautions UDP Helper Configuration Guide # Enable UDP Helper on Switch aUDP Helper ProcessingAddressing Configuration and IP Performance Configuration Default portsBroadcasts containing the destination UDP port number # Specify the destination server on VLAN-interfaceSNMP-RMON Configuration Guide Configuration Procedure Configuring the switch Snmp agentConfiguring the NMS 3Com rmon event 1 log 3Com rmon event 2 trap Precautions None NTP Client/Server NTP Configuration GuideMode Configuration # Set Device a as the time server NTP Symmetric Peers Mode ConfigurationConfiguration Procedure Configure Device C NTP Broadcast Mode Configuration # View NTP session information of Device D Configuration on Device aConfiguration on Device D Respectively NTP Multicast Mode ConfigurationMulticast through its VLAN-interface NTP Client/Server Mode with Authentication Configuration Configuration Level RequirementsConfiguration Procedure Configure Device B Configuration on Device a # Generate an RSA key pair SSH Configuration GuideConfiguration Procedure Configure the SSH server # Set the authentication mode for the user interfaces to AAA # Enable the user interfaces to support SSHSSH client configuration interface SSH client configuration interface # Set the client’s command privilege level to RSA authentication# Assign the public key Switch001 to client client001 Client key pair generation interfaceClient key pair generation interface Client key pair generation interface SSH client configuration interface SSH client configuration interface SSH client configuration interface Configuration Procedure Configure Switch B Complete Configuration Configure Switch B # Establish a connection to the serverAuthentication-mode scheme Protocol inbound ssh # Configure the client public key Switch001 # Display the host public key SSH server SSH client # Generate an RSA key pair # Display the server host public key # Display the client host public key# Specify the server public key on the client # Disable first-time authentication# Configure the server public key Switch002 on the client 2BE0F7AD # Create a local user named client001 Configuring Sftp# Configure the authentication method as password # Specify the service type as Sftp # Enable the Sftp server# Exit Sftp Interface Vlan-interface1 Ip address 192.168.0.2 SSH Configuration Guide FTP and Tftp Configuration Guide Configuration Procedure Configure the switch# Switch data transfer mode to binary # Download file config.cfgComplete Configuration Configure the switch 3Com ftp Ftp Configuring a Switch As Tftp ClientFlash memory before downloading the file Menu to remove themVlan Interface Vlan-interface1 Ip address 1.1.1.1 Information Center Configuration Guide Outputting Log Information to a Unix Log HostComplete Configuration Configuration on the switch Configuration on the log host# Execute the following commands as a root user Outputting Log Information to a Linux Log Host Through the same channel 3Com undo info-center source default channel channel6 Complete Configuration # Outputting Log Information to Console Configuration Procedure # Enable the information center# Enable terminal display Displaying the Time Stamp with the UTC Time Zone Use of the Facility Argument in Log Information Output SwitchAinfo-center enable Simple way VLAN-VPN Configuration GuideInner tag will be used for packet forwarding Configuration Procedure Gvrp Ntdp STP# Set the Tpid value of Ethernet 1/0/12 to # Set the Tpid value of Ethernet 1/0/22 toTunnel Packets of all VLANsConfiguration Procedure Configure Provide # Disable NDP on Ethernet 1/0/1Configure Provide # Disable NDP on Ethernet 1/0/4 # Enable Bpdu tunnel for NDP BPDUs on Ethernet 1/0/4Complete Configuration Configure Provider Configure ProviderREMOTE-PING Configuration Guide Icmp Test Network diagramNetworking and configuration requirements Remote-ping# Enable the Remote-ping client # Configure the test type as Icmp# Configure the destination IP address as # Configure the number of probes in one test asDNS Configuration Guide Name Resolution # Configure com as the DNS suffixDynamic Domain Translate them into correct IP addressesConfigurations are done on the devices DNS server. The DNS server works normallyDNS Configuration Guide Management Access Management Configuration GuideConfiguring Access Can take effect # Enable access management on Switch aVlan to which the port belongs Configuring Access Management with Port Isolation # Add Ethernet 1/0/2 to the isolation group Precautions Refer to Precautions on page 334 for details# Add Ethernet 1/0/1 to the isolation group