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14

Task

Configuring load sharing criteria for IRF links
When

an IRF port is bound with two or more physical IRF ports, there are multiple IRF links among IRF fabric

Determine how traffic is load-shared among members by configuring load sharing crite

The criteria can be information carried in packets, such as IP addresses, MAC addre
combination of them. The criteria can also be packet types, such as Layer 2 and Layer 3
Configure global (in system view) or port-specific (in IRF port view) load sharing criteria

If you configure the load sharing criteria in system view, the configuration is effective

If you configure load sharing criteria in IRF port view, the configuration is effective for

An IRF port preferentially uses the port-specific load sharing criteria. If no port-specif

criteria is available, it uses the global load sharing criteria.

The load sharing criterion or criteria you configured in the same view overwrite the old one
If you configure a load sharing criterion not supported by the switch, you will be prompted

does not support the criterion.

Before configuring the load sharing criteria, bind IRF ports to corresponding physical IRF po

load sharing criterion configuration fails.

Configuring global load sharing criteria

Follow these steps to configure the global IRF link load sharing criteria:

Use the command…

Enter system view

Configure the global IRF link load
sharing criteria

irf-port load-sharing mode

destination-mac

Optional
By default, the gl
load sharing crite

or destination MA
for Layer 2 packe

destination IP add

Layer 3 packets,

destination port n
Layer 4 packets.

Configuring port-specific load sharing criteria

Follow these steps to configure the port-specific load sharing criteria:

Use the command…

Enter system view

Enter IRF port view

Configure the port-specific load
sharing criteria

irf-port load-sharing mode

destination-mac

Optional
By default, the po
sharing criteria a

destination MAC
Layer 2 packets,

destination IP ad

Layer 3 packets,

destination port n
Layer 4 packets.

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Содержание A7503

Страница 1: ...HP A7500 Switch Series IRF Configuration Guide Part number 5998 1865 Software version Release 6626 and later Document version 6W101 20111130 ...

Страница 2: ...MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Hewlett Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material The only warranties for HP products and services are set forth in the express warranty statements accompan...

Страница 3: ...c 18 Configuring IRF member switches in IRF mode 19 Specifying an IRF domain ID for an IRF fabric 19 Modifying a member ID for a switch 20 Specifying a priority for a member switch 21 Configuring IRF ports 21 Enabling auto reboot for IRF fabric merge 22 Configuring a description for a member switch 23 Configuring load sharing criteria for IRF links 23 Specifying the preservation time of bridge MAC...

Страница 4: ...ii Index 56 ...

Страница 5: ...ility for an IRF fabric with three or four members The following cards cannot be used in an IRF fabric with three or four members SA cards LSQ1SRP1CB MPUs IRF overview The HP Intelligent Resilient Framework IRF technology creates a large IRF fabric from multiple switches to provide data center class availability and scalability IRF virtualization technology offers processing power interaction unif...

Страница 6: ...e ports network bandwidth and processing capability of an IRF fabric simply by adding member switches Each member switch has its own CPU and can independently process and forward protocol packets Application scenario Figure 1 shows an IRF fabric that comprises two switches which appear as a single node to the upper and lower layer devices Figure 1 IRF application scenario IP network IRF IP network...

Страница 7: ... an IRF fabric which has four MPUs one active and three standby and two interface cards The IRF fabric manages both the physical and software resources of Device A and Device B An IRF fabric with four member switches is larger in scale it has eight MPUs one active and seven standby and four interface cards as shown in Figure 3 ...

Страница 8: ...MPU of the member Device C MemberID 3 Device D MemberID 4 Active MPU of the member Standby MPU of the member IRF Port1 IRF Port2 IRF Port1 Slave MemberID 2 Standby MPU of the IRF Standby MPU of the IRF Slave MemberID 4 Standby MPU of the IRF Standby MPU of the IRF Standby MPU of the IRF Standby MPU of the IRF CAUTION In an IRF fabric each slave switch must have at least one MPU to work normally Th...

Страница 9: ... for the active MPU of the IRF fabric An MPU of a member switch is a standby MPU of the IRF fabric unless it is the active MPU of the IRF fabric IRF port An IRF port is a logical interface for the internal connection between IRF member switches Each IRF member switch has two IRF ports IRF port 1 and IRF port 2 An IRF port is activated when you bind a physical port to it NOTE In standalone mode the...

Страница 10: ...the CLI Establishment operation and maintenance of an IRF fabric IRF fabric management involves these stages Connecting the IRF member switches IRF topology An IRF fabric typically adopts daisy chain connection or ring connection as shown in Figure 7 A daisy chain connection is mainly used in a network where member switches are distributedly located A ring connection is more reliable than the dais...

Страница 11: ...witches The switches use 10 GE optical ports as physical IRF ports You can connect physical IRF ports with fibers Connection requirements As shown in Figure 7 connect the physical ports bound to IRF Port1 on one switch to the physical ports bound to the IRF Port2 on its neighbor switch Figure 7 IRF fabric physical connection NOTE An IRF port can be bound to a maximum of 8 physical ports to increas...

Страница 12: ...logy data including IRF port connection states member IDs priorities and bridge MAC addresses Each member is managed by its active MPU which records its known topology information locally At the startup of a member switch the active MPU of the member switch records topology information of the member switch When an IRF port of the member switch is up the active MPU of the switch performs the follow...

Страница 13: ...om any member switch to manage all the resources of the member switches Member ID An IRF fabric uses member IDs to uniquely identify and manage its members Member IDs are used in interface numbering and file management In interface numbering Assume an interface on the switch that operates in standalone mode was named GigabitEthernet 3 0 1 After the switch joined an IRF fabric it receives a member ...

Страница 14: ...ion In this case repair the failed IRF link to make the collided IRF fabrics merge into one and recover the failure If the IRF fabric in recovery state fails before the failure is recovered repair both the failed IRF fabric and the failed IRF link and then the collided IRF fabrics can merge into one and the failure is recovered If the IRF fabric in the active state fails before the failure is reco...

Страница 15: ...ric partition or IRF fabric merge Although you can configure the three parameters in either of the two ways they have different effects HP recommends this IRF fabric establishment procedure 1 Plan the network and decide the master switch IRF member IDs and physical IRF ports 2 Pre configure the switches in standalone mode including their IRF ports member IDs and member priorities 3 Save the config...

Страница 16: ...ts are interconnected Switching operating mode Accessing an IRF fabric Accessing the active MPU of an IRF fabric Accessing a standby MPU of an IRF fabric Configuring IRF member switches in IRF mode Specifying an IRF domain ID for an IRF fabric Modifying a member ID for a switch Specifying a priority for a member switch Configuring IRF ports Enabling auto reboot for IRF fabric merge ...

Страница 17: ...13 Task Configuring a description for a member switch Configuring load sharing criteria for IRF links ...

Страница 18: ...t supported by the switch you will be prompted does not support the criterion Before configuring the load sharing criteria bind IRF ports to corresponding physical IRF po load sharing criterion configuration fails Configuring global load sharing criteria Follow these steps to configure the global IRF link load sharing criteria To do Use the command Remarks Enter system view system view Configure t...

Страница 19: ... the switch is added into an IRF fabric plan the member ID of this device when it operates in standalone mode Follow these steps to set a member ID for the switch To do Use the command Remarks Enter system view system view Set a member ID for the switch when it operates in standalone mode irf member member id Required By default no member ID is set for the switch NOTE The member ID of an A7510 swi...

Страница 20: ...ncy and load sharing and increase the bandwidth and reliability of IRF links bind one IRF port to multiple physical IRF ports by repeatedly executing the port group interface command The maximum number of physical IRF ports that can be bound to an IRF port is eight When the upper limit is reached the execution of this command fails The switch allows you to bind multiple physical IRF ports on diffe...

Страница 21: ... are creating a multi member IRF fabric By default a switch is operating in standalone mode The switch reboots when its operating mode changes to IRF mode Configuration file auto conversion When you change the operating mode of the switch from standalone to IRF you can use the configuration file auto conversion function to convert the startup configuration file to prevent some slot or interface re...

Страница 22: ...dless of at which member switch you are logged in The active MPU of the IRF fabric is the configuration and control center of the IRF fabric You make configuration for the IRF fabric on the active MPU and the IRF fabric synchronizes the configurations to all standby MPUs in the IRF fabric Accessing a standby MPU of an IRF fabric You can log in to the CLI of a standby MPU of the IRF fabric to displ...

Страница 23: ...ring IRF member switches in IRF mode Specifying an IRF domain ID for an IRF fabric Introduction to IRF domains IRF uses IRF domain IDs to uniquely identify IRF fabrics IRF domain IDs prevent IRF fabrics from interfering with one another See Figure 9 Switch A and Switch B form IRF fabric 1 and Switch C and Switch D form IRF fabric 2 The IRF fabrics have LACP MAD detection links between them When a ...

Страница 24: ...ports and member priorities After you change the member ID of a switch If you do not reboot the switch the original member ID still takes effect and all physical resources are identified by the original member ID In the configuration file only the IRF port numbers configurations on IRF ports and priority of the switch change with the member ID other configurations do not change If you save the cur...

Страница 25: ... different requirements for member IDs See Setting a member ID for the switch Specifying a priority for a member switch Follow these steps to specify a priority for a member switch To do Use the command Remarks Enter system view system view Specify a priority for a member of an IRF fabric irf member member id priority priority Optional The priority of a member defaults to 1 Configuring IRF ports A...

Страница 26: ...ation of the working mode of physical IRF ports as enhanced Physical IRF ports that connect two member switches of an IRF fabric must be configured to work in the same mode To use the MPLS L2VPN or VPLS function in an IRF fabric configure the 10 GE optical ports on the SD or EB card as the physical IRF port and configure the working mode of physical IRF ports as enhanced Before you create or remov...

Страница 27: ...ne how traffic is load shared among members by configuring load sharing criteria for IRF links The criteria can be information carried in packets such as IP addresses MAC addresses and any combination of them The criteria can also be packet types such as Layer 2 and Layer 3 Configure global in system view or port specific in IRF port view load sharing criteria for IRF links If you configure the lo...

Страница 28: ... packets Specifying the preservation time of bridge MAC address An IRF fabric uses the bridge MAC address of the master switch as its bridge MAC address This bridge MAC address is used by Layer 2 protocols MSTP and LACP for example to identify the IRF fabric It is also used for generating an MAC address for a Layer 3 interface This bridge MAC address must be unique on the switched LAN for proper c...

Страница 29: ... the switch automatically downloads the system software image from the master sets the downloaded file as the system software image for the next reboot and automatically reboots with the new system software to re join the IRF fabric If this function is disabled you must manually ensure that the joining switch uses the same system software as the master switch If not the switch cannot join the IRF ...

Страница 30: ...ifferent network scenarios LACP MAD BFD MAD These MAD detection mechanisms operate independently and you can configure all of them for an IRF fabric Configuring LACP MAD 1 LACP MAD detection mechanism With LACP MAD an IRF member switch sends extended LACP data units LACPDUs with a type length value TLV that conveys the domain ID and active ID of the IRF fabric for detecting an IRF split The domain...

Страница 31: ...to avoid false detection of IRF partition Figure 10 Network diagram 3 Configuring LACP MAD detection Configure LACP MAD detection by following these steps Create an aggregate interface also required on the intermediate switch Configure the aggregation group to work in dynamic aggregation mode also required on the intermediate switch Enable LACP MAD detection on the dynamic aggregate interface Add ...

Страница 32: ... interface interface type interface number Assign the current Ethernet interface to the specified aggregation group port link aggregation group number Required Configuring BFD MAD 1 BFD MAD detection mechanism BFD MAD is implemented with the BFD protocol To configure BFD MAD detection configure a MAD IP address on a BFD enabled Layer 3 interface for each member switch This MAD address identifies t...

Страница 33: ...o BFD MAD detection This is also required on the intermediate switch if it exists Select the physical IRF ports for BFD MAD detection at least one on each member switch and add them into the detection dedicated VLAN This is also required on the intermediate switch if it exists Create VLAN interfaces for the detection dedicated VLAN enable BFD MAD detection on these interfaces and then assign MAD I...

Страница 34: ...d Layer 3 interface to any VPN instance The MAD function is mutually exclusive with VPN Do not enable the spanning tree function on any port in a BFD MAD VLAN The MAD function is mutually exclusive with the spanning tree function To avoid anomalies do not assign a BFD MAD enabled interface any other IP address such as a common IP address configured with the ip address command or a VRRP virtual IP ...

Страница 35: ...teps 1 Repair the IRF link Then IRF fabric 1 prompts you that an IRF fabric merge will happen and you need to reboot the switch 2 Log in to the IRF fabric in recovery state and reboot it execute the reboot command in user view After the switch reboots the IRF fabric is recovered Figure 12 Recover IRF member switches approach I As shown in Figure 13 if the IRF fabric in active state fails due to ex...

Страница 36: ...P recommends that you execute the mad restore command to recover the switch and make it operate in the active state instead of executing the undo shutdown command to perform a manual recovery IRF configuration fast recovery If a member switch has only one MPU and that board is corrupted use the following fast recover function to avoid complicated IRF configuration Configuration prerequisites HP re...

Страница 37: ...mber switch 1 and insert the standby MPU of member switch 2 into member switch 1 8 Configure IRF ports on member switch 1 and connect member switch 1 to member switch 2 through physical IRF ports The fast recovery is completed Follow the step below to modify the member ID of the standby MPU To do Use the command Remarks Enter system view system view Change the member ID of the standby MPU In IRF m...

Страница 38: ...ble in any view IRF fabric configuration examples LACP MAD detection enabled IRF configuration example with two member switches Network requirements The number of PCs on the enterprise network see Figure 14 is outgrowing the number of ports available on the access switches To address business growth increase the number of ports at the access layer while protecting the present investments of the cu...

Страница 39: ...ame interface ten gigabitethernet 3 0 1 Sysname Ten GigabitEthernet3 0 1 shutdown Sysname Ten GigabitEthernet3 0 1 quit Sysname irf port 2 Sysname irf port2 port group interface ten gigabitethernet 3 0 1 Sysname irf port2 quit Sysname interface ten gigabitethernet 3 0 1 Sysname Ten GigabitEthernet3 0 1 undo shutdown Sysname Ten GigabitEthernet3 0 1 quit Save the current configuration to the startu...

Страница 40: ...ext startup configuration file flash startup cfg to make it available in IRF mode Y N y Please wait Saving the converted configuration file to the main board succeeded Slot 1 Saving the converted configuration file succeeded Now rebooting please wait Device B and Device A form an IRF fabric after Device B reboots 3 Configure LACP MAD Create a dynamic aggregate interface and enable LACP MAD Sysname...

Страница 41: ... are shut down If the master fails log in to the console port of Device B and use the mad restore command to recover Device B to active state and bring up disabled ports on the device Sysname system view Sysname mad restore This command will restore the device from multi active conflict state Continue Y N y Restoring from multi active conflict state please wait Sysname May 7 09 23 16 050 2010 HP I...

Страница 42: ...ndicates the device through which the user logs in The Bridge MAC of the IRF is 0023 895f 954f Auto upgrade yes Mac persistent no Domain ID 30 Auto merge no BFD MAD detection enabled IRF configuration example with two member switches Network requirements The network as shown in Figure 15 is outgrowing the forwarding capability of the existing core switch Device A To address business growth scale u...

Страница 43: ...re MAD to detect multi active collisions In this example BFD MAD is adopted because the number of member switches in the IRF fabric is small Specify priorities for member switches to make sure that Device A is elected as the master of the IRF fabric When IRF links fail first repair IRF links and then reboot the device in recovery state to make it re join the IRF fabric Configuration procedure 1 Co...

Страница 44: ...lease wait Saving the converted configuration file to the main board succeeded Slot 1 Saving the converted configuration file succeeded Now rebooting please wait The device operates in IRF mode after reboot 2 Configure Device B Set the member ID of Device B to 2 create IRF port 1 and bind it to physical port Ten GigabitEthernet 3 0 1 Sysname system view Sysname irf member 2 Info Member ID change w...

Страница 45: ...address 192 168 2 1 24 member 1 Sysname Vlan interface3 mad ip address 192 168 2 2 24 member 2 Sysname Vlan interface3 quit Disable the spanning tree function on ports GigabitEthernet 1 4 0 1 and GigabitEthernet 2 4 0 1 Sysname interface gigabitethernet 1 4 0 1 Sysname gigabitethernet 1 4 0 1 undo stp enable Sysname gigabitethernet 1 4 0 1 quit Sysname interface gigabitethernet 2 4 0 1 Sysname gig...

Страница 46: ...S 00e0 fc0f 8c02 LACP MAD detection enabled IRF configuration example with four member switches Network requirements The number of PCs on the enterprise network see Figure 16 is outgrowing the number of ports available on the access switches To address business growth increase the number of ports at the access layer while protecting the present investments of the customer and ensuring ease of mana...

Страница 47: ...eate IRF ports 1 and 2 and bind them to physical ports Ten GigabitEthernet 3 0 2 and Ten GigabitEthernet 3 0 1 respectively Sysname system view Sysname irf member 1 Info Member ID change will take effect after the switch reboots and operates in IRF mode Sysname irf port 1 Sysname irf port1 port group interface ten gigabitethernet 3 0 2 Sysname irf port1 quit Sysname irf port 2 Sysname irf port2 po...

Страница 48: ... next startup Continue Y N y Do you want to convert the content of the next startup configuration file flash startup cfg to make it available in IRF mode Y N y Please wait Saving the converted configuration file to the main board succeeded Slot 1 Saving the converted configuration file succeeded Now rebooting please wait Device B and Device A form an IRF fabric after Device B reboots 3 Configure D...

Страница 49: ...Sysname irf port1 port group interface ten gigabitethernet 2 0 1 Sysname irf port1 quit Sysname irf port 2 Sysname irf port2 port group interface ten gigabitethernet 2 0 2 Sysname irf port2 quit Save the current configuration to the startup configuration file Sysname quit Sysname save Connect Device D to Device B and Device C as shown in Figure 16 Switch the operating mode of Device D to IRF Sysna...

Страница 50: ...e switch to forward and process extended LACPDUs exchanged between the member switches for MAD detection CAUTION If the intermediate switch is in an IRF fabric you must assign this fabric a different domain ID than the LACP MAD enabled IRF fabric Create a dynamic aggregate interface Sysname system view Sysname interface bridge aggregation 2 Sysname Bridge Aggregation2 link aggregation mode dynamic...

Страница 51: ...ACE UPDOWN Trap 1 3 6 1 6 3 1 1 5 4 linkUp Interface 277872640 is Up ifAdminStatus is 1 ifOperStatus is 1 May 7 09 23 16 069 2010 HP IFNET 3 LINK_UPDOWN GigabitEthernet2 3 0 2 link status is UP May 7 09 23 16 302 2010 HP LAGG 1 AggPortRecoverActive Trap 1 3 6 1 4 1 2011 5 25 25 2 4 hwAggPortActiveNotification Aggregation Group 2 port member 277872640 becomes ACTIVE May 7 09 23 16 322 2010 HP LAGG ...

Страница 52: ...e A Device B IRF XGE1 3 0 2 IRF port1 2 XGE3 2 0 1 IRF port3 1 XGE3 2 0 2 IRF port3 2 XGE4 2 0 1 IRF port4 1 XGE4 2 0 2 IRF port4 2 XGE2 2 0 1 IRF port2 1 Device C Device D GE1 2 0 1 GE2 3 0 1 XGE1 3 0 1 IRF port1 1 XGE2 2 0 2 IRF port2 2 GE3 3 0 1 GE4 3 0 1 IRF link BFD link Data link GE1 0 1 GE1 0 2 GE1 0 3 GE1 0 4 Configuration considerations Device A is located at the distribution layer of the...

Страница 53: ...ty of Device A as 10 to make sure that it is elected as the master when the IRF fabric is established DeviceA irf priority 10 Save the current configuration to the startup configuration file Sysname quit Sysname save Change the operating mode of Device A to IRF Sysname system view Sysname chassis convert mode irf The device will switch to IRF mode and reboot You are recommended to save the current...

Страница 54: ...ce B and Device A form an IRF fabric after Device B reboots 3 Configure Device C Set the member ID of Device C to 3 create IRF ports 1 and 2 and bind them to physical ports Ten GigabitEthernet 2 0 1 and Ten GigabitEthernet 2 0 2 respectively Sysname system view Sysname irf member 3 Info Member ID change will take effect after the switch reboots and operates in IRF mode Sysname irf port 1 Sysname i...

Страница 55: ...vice D to IRF Sysname system view Sysname chassis convert mode irf The device will switch to IRF mode and reboot You are recommended to save the current running configuration and specify the configuration file for the next startup Continue Y N y Do you want to convert the content of the next startup configuration file flash startup cfg to make it available in IRF mode Y N y Please wait Saving the ...

Страница 56: ... Troubleshoot the IRF when the MAD mechanism detects errors Because the member switches are connected with a ring connection when a single IRF link fails the connection turns into a daisy chain connection and the IRF is not partitioned When both the IRF link between Device A and Device C and the IRF link between Device B and Device D go down however the IRF fabric will break into two IRF fabrics o...

Страница 57: ...m IRF to standalone Network requirements As shown in Figure 18 Device A and Device B are member switches of an IRF fabric Switch the operating mode of Device A and Device B from IRF to standalone Figure 18 An IRF fabric XGE1 3 0 1 IRF port1 2 XGE2 3 0 1 IRF port2 1 GE1 4 0 2 GE2 4 0 2 Device A Device B GE4 0 1 GE4 0 2 IRF IP network Device C Configuration considerations Disconnect IRF connections ...

Страница 58: ...put the file name cfg flash startup cfg To leave the existing filename unchanged press the enter key flash startup cfg exists overwrite Y N y Validating file Please wait The current configuration is saved to the active main board successfully Configuration is saved to device successfully 4 Switch the operating mode of Device A from IRF to standalone IRF undo chassis convert mode The device will sw...

Страница 59: ...figuration file to main board succeeded Chassis 2 Slot 1 Saving the converted configuration file succeeded Now rebooting please wait Device B automatically reboots to complete the operating mode switch NOTE If you have created a VLAN interface and configured an IP address for the interface on the IRF fabric and both Device A and Device B have member ports of this VLAN IP address collision occurs a...

Страница 60: ...an IRF fabric 33 E Establishment operation and maintenance of an IRF fabric 6 I IRF configuration fast recovery 32 IRF fabric configuration examples 34 IRF fabric configuration task list 10 IRF overview 1 P Pre configuring an IRF member switch in standalone mode 15 S Saving configuration to the startup configuration file 17 Switching operating mode 17 ...

Страница 61: ...istering you will receive email notification of product enhancements new driver versions firmware updates and other product resources Related information Documents To find related documents browse to the Manuals page of the HP Business Support Center website http www hp com support manuals For related documentation navigate to the Networking section and select a networking category For a complete ...

Страница 62: ...arated by vertical bars from which you select one choice multiple choices or none 1 n The argument or keyword and argument combination before the ampersand sign can be entered 1 to n times A line that starts with a pound sign is comments GUI conventions Convention Description Boldface Window names button names field names and menu items are in bold text For example the New User window appears clic...

Страница 63: ...ng capable device such as a router or Layer 3 switch Represents a generic switch such as a Layer 2 or Layer 3 switch or a router that supports Layer 2 forwarding and other Layer 2 features Port numbering in examples The port numbers in this document are for illustration only and might be unavailable on your device ...

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