HP 5200zl, 3500yl manual Appendix J Server-to-Switch Distributed Trunking, Limitations/Restrictions

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Appendix J: Server-to-Switch Distributed Trunking

Distributed Trunking is a link aggregation technique where two or more links across two switches are aggregated together to form a trunk. This feature overcomes the limitation in IEEE 802.3ad that specifies all links of a trunk have to be from a single switch. Distributed Trunking improves resiliency and load balancing in a layer 2 network.

Distributed Trunking (DT) is included in switch software starting with version K.14. In this initial release, only Server-to-Switch Distributed Trunking is supported. For each downstream server, it sees the aggregated links as coming from a single switch, which makes any servers that support standard 802.3ad interoperate with Distributed Trunking.

Distributed trunks can be grouped together by configuring two individual DT-LACP trunks with the common trunk group name. DT ports will be aggregated dynamically after the configuration. The server/switch should support standard 802.3ad LACP on the links connecting DT switches. It is assumed LACP on the servers are configured manually on the server with a list of links to be part of the LACP trunk.

DT offers load balancing of traffic over multiple physical links. From the server to the switch, the traffic is balanced according to the load-balancing scheme configured on the server NIC. From the switch to the server, traffic is balanced according to the MAC DA and SA pair.

Two DT switches can be connected via only one Inter-Switch Connection (ISC) and DT ports can be connected only to servers. Following is the topology supported.

Limitations/Restrictions

•Meshing and Distributed Trunking features are mutually exclusive.

•Routing and Distributed Trunking features are mutually exclusive.

•IGMP and DHCP snooping, ARP-protect, and STP are not supported on DT trunks.

•Q-in-Q in mixed VLAN mode and DT are mutually exclusive.

•ISC ports will be part of all VLANs—i.e., they will become members of a VLAN once that VLAN is configured.

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Contents HP ProCurve Switch 5400zl, 3500yl, and 6200yl Series Ospf Page Introduction Executive summaryOverview Product positioningHP ProCurve Switch 5400zl and 3500yl Series HP ProCurve Switch 6200yl-24G-mGBICProVision Asic architecture Classification and lookup Inside the ProVision Asic ArchitecturePolicy Enforcement Engine Advanced capabilities of the product family Management subsystemHP ProCurve Switch 5400zl Series 5400zl chassis layout ProCurve Switch 5400zl ChassisHP ProCurve Switch 5406zl chassis layout Power supply types System PoE power Power suppliesFan tray Management module Zl modulesHP ProCurve Switch 5400zl series line interface modules Power supply configurations5406zl 5412zl Specifications Memory ProcessorConsole port Auxiliary portDescription PortsMini-GBICs supported ordered separately Open mini-GBIC slots Maximum distance Transceivers supported ordered separatelyHP ProCurve Radio Ports supported ordered separately HP ProCurve ONE Services zl Module J9289A DescriptionHP ProCurve Switch 3500yl Series Page Additional line interface module LED status indicatorsHP ProCurve Switch 6200yl HP ProCurve Switch 6200yl-24G-mGBIC J8992A Overview of features and benefits Security featuresPerformance QoS functions Bandwidth shaping usingConvergence Advanced classifier-based QoSBridging protocols Layer 2 switchingRouting protocols IPv6Management DiagnosticsFuture-proofing Low cost of ownershipDevice management Standards and protocolsGeneral protocols IP MulticastNetwork management MIBsPerformance and capacity Capacity and performance features comparisonQoS/Cos SecurityPer-port buffer sizes Optimizing the 10-GbE port configuration Page Throughput and latency performance data Gbps Gigabit performance traffic patterns Industry-leading warranty HP ProCurve warranty and supportIntelligent Edge and Premium License Appendix a Premium LicenseTask Manual Using Appendix B Policy Enforcement Engine Policy Enforcement Engine benefits Wire-speed performance for ACLsGranular policy enforcement Hardware-based performancePoE device types Appendix C Power over EthernetPower delivery options Additional PoE power-external suppliesPoE negotiation Support for pre-802.3af standard powered devices Appendix D PIM Sparse ModeAppendix E LLDP-MED Appendix F Virus Throttle security Page Response options Appendix G VrrpSensitivity Connection-rate ACLXrrp support on 5300xl switch Appendix H Ospf Equal Cost Multipath Vlan ID Appendix I Advanced Classifier-Based QoSLimitations/Restrictions Appendix J Server-to-Switch Distributed TrunkingAppendix K Troubleshooting LED status indicators for 5400zl seriesAn example of upstream traffic forwarding is as follows EPS LED LED status indicators for 3500yl and 6200yl series Temp On green Blinking orange Fan Status PoE Status Off Part number Component Part numbers and Field Replaceable UnitsPart number Component For more information