Dell Broadcom NetXtreme Family of Adapters Broadcom NetXtreme II Network Adapt - Page 220

Troubleshooting: Broadcom NetXtreme II Network Adapter User Guide LSO as an offload capability in BACS; however, CO and LSO will not work. This is a limitation of Hyper-V. Hyper-V does not support CO and LSO in an IPv6 network. Windows Server 2008 R2 When configuring a NetXtreme II network adapter on a Hyper-V system, be aware of the following: An adapter that is to be bound to a virtual network should not be configured for VLAN tagging through the driver's advanced properties. Instead, Hyper-V should manage VLAN tagging exclusively. The Locally Administered Address (LAA) set by Hyper-V takes precedence over the address set in the adapter's advanced properties. The LSO and CO features in the guest OS are independent of the network adapter properties. To allow jumbo frame functionality from the guest OS, both the network adapter and the virtual adapter must have jumbo frames enabled. The Jumbo MTU property for the network adapter must be set to allow traffic of large MTU from within the guest OS. The jumbo packet of the virtual adapter must be set in order to segment the sent and received packets. Teamed Network Adapters Table 2 identifies Hyper-V supported features that are configurable for NetXtreme II teamed network adapters. This table is not an all-inclusive list of Hyper-V features. Table 2: Configurable Teamed Network Adapter Hyper-V Features Feature Supported in Windows Server 2008 Smart Load Balancing and Failover (SLB) team type Yes Link Aggregation (IEEE 802.3ad LACP) team type Generic Trunking (FEC/GEC) 802.3ad Draft Static team type Failover LiveLink Large Send Offload (LSO) Yes Yes Yes Yes Limited* Checksum Offload (CO) Limited* TCP Offload Engine (TOE) Limited* Hyper-V VLAN over an adapter Yes Hyper-V VLAN over a teamed adapter Yes Hyper-V VLAN over a VLAN Limited* Hyper-V virtual switch over an adapter Yes Hyper-V virtual switch over a teamed adapter Yes Hyper-V virtual switch over a VLAN Yes iSCSI boot No Supported in Windows Server 2008 R2 Comments/Limitation Multi-member SLB team allowed Yes with latest BASP6 version. Note: VM MAC is not presented to external switches. Yes - Yes Yes Yes Yes Yes Yes Yes Yes Limited* Yes - - - *Conforms to miniport limitations outlines in Table 1. *Conforms to miniport limitations outlines in Table 1. *Conforms to miniport limitations outlines in Table 1. - - Only an untagged VLAN. - Yes Yes No* - - *Remote boot to SAN is supported. Windows Server 2008 When configuring a team of NetXtreme II network adapters on a Hyper-V system, be aware of the following: Create the team prior to binding the team to the Hyper-V virtual network. file:///T|/htdocs/NETWORK/BroadCom/71921/NetXtremeII/en/trouble.htm[9/26/2012 3:30:19 PM]