Port trunk groups, Before you configure trunks | HP 445946-001

Ports and trunking

Table 7 Ethernet switch port names

Port number	Port alias

13	Downlink13

14	Downlink14

15	Downlink15

16	Downlink16

17	Mgmt

18	Uplink1

19	Uplink2

20	Uplink3

21	Uplink4

Port trunk groups

When using port trunk groups between two switches, you can create an aggregate link operating at up to forty Gigabits per second, depending on how many physical ports are combined. The switch supports up to 12 trunk groups per switch, each with up to six ports per trunk group.

The trunking software detects broken trunk links (link down or disabled) and redirects traffic to other trunk members within that trunk group. You can only use trunking if each link has the same configuration for speed, flow control, and auto-negotiation.

Statistical load distribution

In a configured trunk group containing more than one port, the load distribution is determined by information embedded within the data frame. For IP traffic, the switch will calculate the trunk port to use for forwarding traffic by implementing the load distribution algorithm on value equals to modulus of (XOR of last 3 bits of Source and last 3 bits of Destination IP address). For non-IP traffic, the switch will calculate the trunk port to use for forwarding traffic by implementing the load distribution algorithm on value equals to modulus of (XOR of last 3 bits of Source and last 3 bits of Destination MAC address).

Built-in fault tolerance

Since each trunk group is composed of multiple physical links, the trunk group is inherently fault tolerant. As long as even one physical link between the switches is available, the trunk remains active.

Statistical load distribution is maintained whenever a link in a trunk group is lost or returned to service.

Before you configure trunks

When you create and enable a trunk, the trunk members (switch ports) take on certain settings necessary for correct operation of the trunking feature.

Before you configure your trunk, you must consider these settings, along with specific configuration rules, as follows:

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HP 445946-001 Port trunk groups, Before you configure trunks, Statistical load distribution, Built-in fault tolerance

Contents

Part number First edition June HP 10Gb Ethernet BL-c Switch Legal notices Contents 802.1x authentication process Configuring LacpConfiguring port-based traffic control 802.1x port states Bridge priority Port priority Port path cost Configuration guidelinesAdding a Vlan to a Spanning Tree Group Creating a Vlan Edge port Link type 105 100106 109 Internal versus external routing 134 131141 155 167 Configuring the switch for tracking 177173 175 Accessing the switch Accessing the switchIntroduction Additional references Typeface or Meaning Example SymbolTypographical conventions Management Network Connecting through Telnet Connecting through the console portConnecting through Secure Shell Configuring an IP interface Using the command line interfaces Apply, verify, and save the configuration Using the Browser-based Interface Default configuration Using Simple Network Management ProtocolFor more details, see Configuring Snmp trap hosts Snmp Cfg/sys/ssnmp/snmpv3/usm x/auth md5sha User configuration CLI user equivalent View based configurations Configure a user with no authentication or password Configuring Snmp trap hostsCLI oper equivalent SNMPv1 trap host Sys/ssnmp/snmpv3/tparam x/uname Accessing the switch Configure an entry in the notify table SNMPv3 trap host configuration SNMPv2 trap host configuration Setting allowable source IP address ranges Secure access to the switch Configuring an IP address range for the management network Radius authentication and authorizationHow Radius authentication works Apply and save the configuration Configuring Radius on the switch CLI example Click Submit Configuring Radius on the switch BBI example User accounts for Radius users Radius authentication featuresUser account Description and tasks performed Accessing the switch User access levels TACACS+ authenticationUser name/access User service type Value Radius attributes for user privileges TACACS+ authentication features How TACACS+ authentication worksAuthorization User access level TACACS+ level Accounting Configure custom privilege-level mapping optional Configure the TACACS+ secret and second secret Configuring TACACS+ authentication on the switch BBI example Secure Shell and Secure Copy Enabling or disabling SSH Configuring SSH and SCP features CLI example Enter the following command to log in to the switch Using SSH and SCP client commandsSwitch prompts you for the scpadmin password For example SSH and SCP encryption of management messages Generating RSA host and server keys for SSH access SSH/SCP integration with Radius and TACACS+ authentication User access controlUser account Description Password Define the user name and password Setting up user IDsEnable the user ID Ports and trunking Ports on the switchPorts and trunking Port number Port alias Built-in fault tolerance Before you configure trunksPorts and trunking Ethernet switch port names Port trunk groups Cfg/port x/cur Trunk group configuration rules Port trunking example On Switch 1, configure trunk groups 5 Configuring trunk groups CLI exampleOn Switch 2, configure trunk groups 4 Configuring trunk groups BBI example Click Submit Page Actor Switch Partner Switch Configurable Trunk Hash algorithmLink Aggregation Control Protocol Page Define the admin key on port Configuring LacpApply and verify the configuration Save your new configuration changes Port-based Network Access control Port-based Network Access and traffic controlExtensible authentication protocol over LAN Port-based Network Access and traffic control EAPoL Message Exchange 802.1x authentication process 802.1x port states Attribute Attribute Value Supported Radius attributes Port-based traffic control EAPoL configuration guidelines Configuring port-based traffic control Overview VLANsVLANs and port Vlan ID numbers Vlan numbers Port configuration Viewing and configuring PVIDsPvid numbers Viewing VLANs Vlan tagging VLANs VLANs Vlan topologies and design considerations VLANs and IP interfaces Vlan configuration rules Component Description Multiple Vlans with tagging Configuring ports and VLANs on Switch 1 CLI example Configuring the example networkVLANs Multiple VLANs with tagging # add Add port 18 to Vlan Current Ports for Configuring ports and VLANs on Switch 2 CLI example Configuring ports and VLANs on Switch 1 BBI example VLANs Enable the port and enable Vlan tagging Cfg/l2/fdb/static FDB static entries Trunking support for FDB static entries Configuring a static FDB entry Bridge Protocol Data Units Spanning Tree ProtocolSpanning Tree Protocol Default Spanning Tree configuration Spanning Tree Group configuration guidelinesDetermining the path for forwarding BPDUs Creating a Vlan Adding a Vlan to a Spanning Tree GroupRules for Vlan tagged ports Adding and removing ports from STGs Switch element Belongs to Why do we need Multiple Spanning Trees?Multiple Spanning Trees Assigning cost to ports and trunk groups Two VLANs on separate instances of Spanning Tree Protocol Vlan participation in Spanning Tree Groups Configuring Switch 1 CLI example Configuring Multiple Spanning Tree GroupsConfiguring Switch 2 CLI example Configuring Switch 1 BBI example Page Configuration guidelines Configuring Port Fast ForwardingConfiguring Fast Uplink Convergence Port Fast Forwarding Rapid Spanning Tree Protocol Rstp and MstpPort state changes Rstp and Mstp Rstp configuration example Rstp configuration guidelinesPort type and link type Configuring Rapid Spanning Tree Protocol BBI example Multiple Spanning Tree Protocol Rstp and Mstp Apply, verify, and save the configurationMstp region Common Internal Spanning Tree Mstp configuration example Mstp configuration guidelinesConfiguring Multiple Spanning Tree Protocol CLI example Assign VLANs to Spanning Tree Groups Configuring Multiple Spanning Tree Protocol BBI example Click Submit Page Apply, verify, and save the configuration Quality of Service Quality of Service Summary of packet classifiers Using ACL filtersNumber Protocol Name Number Quality of Service Well-known protocol typesApplication Well-krown TCP flag values Understanding ACL precedence Summary of ACL actionsPrecedence Group ACLs Precedence Level Using ACL Groups Viewing ACL statistics ACL Metering and Re-markingMetering Re-marking Configure Access Control Lists CLI example ACL configuration examples Configure Access Control Lists and Groups BBI example Click Submit Page Quality of Service Add the ACL to the port Differentiated Services concepts Using Dscp values to provide QoSPer Hop Behavior Drop Precedence Class Service Level Default PHB 802.1p Priority Using 802.1p priorities to provide QoSQoS levels Class selector priority classesPage 802.1p configuration BBI example 802.1p configuration CLI exampleConfigure a port’s default 802.1 priority Quality of Service Select a port 101 102 Quality of Service Set the 802.1p priority value 103 Page Queuing and scheduling IP routing benefits Basic IP routingRouting between IP subnets Basic IP routingPage Page Subnet Devices IP Addresses Example of subnet routingInterface Devices IP Interface Address Enable, apply, and verify the configuration Using VLANs to segregate broadcast domainsDevices IP Interface Switch Port Add the switch ports to their respective VLANs 110 111 Dhcp relay agent Dynamic Host Configuration Protocol Dhcp relay agent configuration Routing Information Protocol Routing updatesDistance vector protocol Stability RIP Features RIPv2 in RIPv1 compatibility modeRIPv1 RIPv2 Authentication DefaultMulticast Metric Add VLANs for routing interfaces RIP configuration exampleAdd IP interfaces to VLANs Cfg/l3/frwd/on before you turn RIP on Igmp Snooping Igmp Snooping FastLeave IGMPv3 Configuring the action Configuring the rangeIgmp Filtering Configuring Igmp Snooping CLI example Igmp Snooping configuration exampleEnable IGMPv3 Snooping optional Static multicast router Configuring a Static Mrouter CLI example Configuring Igmp Filtering CLI exampleEnable Igmp Filtering on the switch Define an Igmp Filter Configuring Igmp Snooping BBI example Apply, verify, and save the configuration 124 Igmp Snooping Enable Igmp Snooping Configuring Igmp Filtering BBI example Select Layer 3 Igmp Igmp Filters Add Filter Igmp Snooping Define the Igmp Filter126 Page Apply, verify, and save the configuration 128 Configure Static Mrouter Click the Configure context button Configuring a Static Multicast Router BBI example Apply, verify, and save the configuration Igmp Snooping 130 Types of Ospf areas Ospf overview Ospf area types Types of Ospf routing devices Link-State Database Neighbors and adjacenciesShortest Path First Tree Configurable parameters Ospf implementation in HP 10GbE switch softwareInternal versus external routing Assigning the area index Defining areasArea index set to an arbitrary value Interface cost Using the area ID to assign the Ospf area numberAttaching an area to a network Electing the designated router and backup Default routesSummarizing routes Router ID Virtual links Enable Ospf authentication for Area 2 on switch Assign MD5 key ID to Ospf interfaces on switches 1, 2, Configure MD5 key ID for Area 0 on switches 1, 2,Enable Ospf MD5 authentication for Area 2 on switch Assign MD5 key ID to Ospf virtual link on switches 2 Ospf features not supported in this release Ospf configuration examplesExample 1 Simple Ospf domain CLI example Example 1 Simple Ospf domain BBI example Apply, verify, and save the configuration 143 Ospf Click Submit Click Submit Select Add Ospf Area Configure the Ospf area146 Ospf 148 Click Submit Select Add Ospf Interface Apply, verify, and save the configuration 149 Example 2 Virtual links Configuring Ospf for a virtual link on Switch aDefine the backbone Configure the virtual link Configuring Ospf for a virtual link on Switch BSwitch B in step Attach the network interface to the transit area Other Virtual Link Options Example 3 Summarizing routesDefine the transit area 153 Verifying Ospf configuration Rmon group 1-statistics Remote monitoringRemote monitoring Configuring Rmon Statistics BBI example Configuring Rmon Statistics CLI exampleView Rmon statistics for the port Remote monitoring Select a port 157 Rmon group 2-history Remote monitoring Enable Rmon on the port History MIB objects Configure the Rmon History parameters Apply, verify, and save the configuration 160 Configure Rmon History BBI example Alarm MIB objects Rmon group 3-alarms Configure the Rmon Alarm parameters to track Icmp messages Configure Rmon Alarms BBI example Apply, verify, and save the configuration 163 164 Remote monitoring Apply, verify, and save the configuration Configuring Rmon Events CLI exampleConfigure the Rmon Event parameters Rmon group 9-events Apply, verify, and save the configuration 166 Configuring Rmon Events BBI example Uplink Failure Detection High availabilityHigh availability Spanning Tree Protocol with UFD Failure Detection Pair Monitoring Uplink Failure Detection Configuring Uplink Failure Detection Configuring UFD on Switch 2 CLI example Configuring UFD on Switch 1 CLI exampleTurn UFD on Create a trunk group of uplink ports 18-21 to monitor Configuring Uplink Failure Detection BBI example Apply, verify, and save the configuration 172 Vrrp components Vrrp overviewVirtual router Virtual router MAC address Vrrp operation Master and backup virtual routerSelecting the master Vrrp router Virtual Interface Router Active-Active redundancy Failover methods Tracking Vrrp router priority HP 10GbE switch extensions to VrrpParameter Virtual router deployment considerations Configuring the switch for trackingAssigning Vrrp virtual router ID Active-Active configuration High availability configurationsTask 1 Configure Switch a Configure ports Turn on Vrrp and configure two Virtual Interface Routers High availability Configure client and server interfacesTurn off Spanning Tree Protocol globally 179 Task 2 Configure Switch B Vrrp Virtual Router 1# Task 1 Configure Switch a BBI example Click Submit 183 184 Page High availability Enable Vrrp processing 187 Click Submit Select Add Virtual Router Click Submit High availability 189 Apply, verify, and save the configuration 190 Troubleshooting tools Troubleshooting toolsPort Mirroring Enable Port Mirroring Configuring Port Mirroring CLI exampleView the current configuration Select the ports that you want to mirror Configuring Port Mirroring BBI example Click Add Mirrored Port Other network troubleshooting techniques Page Index Index197 198