56 IBM BladeCenter JS23 and JS43 Implementation Guide
3.8.4 Integrated Virtual Ethernet (IVE)
IVE is the name given to the collection of hardware components (including the
Host Ethernet Adapter (HEA), the software, and the hypervisor functions that
provide the integrated Ethernet adapter ports with hardware assisted
virtualization capabilities.
The IVE was developed to meet general market requirements for better
performance and better virtualization for Ethernet. It offers:
Two 1Gbps ports
External network connectivity for LPARs using dedicated ports without the
need of a Virtual I/O server
The speed and performance of the GX+ bus, faster than PCI Express x16
The IVE consists of a physical Ethernet adapter that is connected directly to the
GX+ bus of the POWER6 processor instead of being connected to a PCIe bus.
This method provides IVE with the high throughput and low latency of a bus
embedded in the I/O controller. IVE also includes special hardware features that
provide logical Ethernet adapters.
The IVE feature implemented on the IBM BladeCenter JS23 Express provides
two 1-Gbps physical ports. IBM BladeCenter JS43 Express has two additional
1-Gbps physical ports, located in the MPE planar.
Prior to IVE, virtual Ethernet provided a connection between LPARs. The use of
an SEA and the Virtual I/O server allowed connection to an external network.
The IVE replaces the need for both the virtual Ethernet and the SEA. It provides
most of the functionality of each.
Therefore, this eliminates the need to move packets (using virtual Ethernet)
between partitions and then through a shared Ethernet adapter (SEA) to an
Ethernet port. LPARs can share IVE ports with improved performance.
The terms IVE and HEA are used interchangeably in this document.
3.8.5 Integrated Video Card
Both IBM BladeCenter JS23 and JS43 Express have an integrated ATI RN50
video controller in the Base planar. This video controller is used to support 2D
graphics on an SVGA video display. This is the same controller as in the IBM
BladeCenter JS21 Express, but with DDR2 SDRAM.
Kommentare zu diesen Handbüchern