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Layer 2 forwarding table is kept fresh through the use of this CPU. Other per-port protocols, such as Spanning
Tree Protocol and LACP, also are run on this CPU. The local CPU, being a full-function microprocessor, allows
functionality updates through future software releases.
Fabric ASIC
The Fabric ASIC provides the crossbar fabric for interconnecting the modules together. The use of a crossbar
allows wirespeed connections simultaneously from any module to any other module. As mentioned in the
“ProVision ASIC architecture” section, the connection between the Fabric ASIC and each interface module’s
ProVision ASIC (either NG or NGX) is through a 28.8-Gbps full-duplex link via two 14.4-Gbps HSLs.
Management subsystem
The management subsystem is responsible for overall switch management and consists of a CPU, flash memory
to hold program code, processor memory for code execution, a console interface, and other system support
circuitry to interface and control the ProVision ASICs. In the case of the 6600 switch series, the management
subsystem is fixed on the motherboard and does not allow for removability or upgradability.
ProVision hardware resiliency
Many functions required in a switch have been implemented in the single ASIC on the module. What takes a
number of chips in other vendor products is achieved in a single ProVision ASIC in the 6600 series. This keeps
the part count down, raising overall reliability of the module a significant degree.
Another engineering aspect in the ASIC is hardware error detection, with correction in software for the memory
used by the switch. This includes the memory used for forwarding the network traffic, such as the routing and
forwarding tables, the Policy Enforcement Engine information, multicast tables, and other data structures. Traffic
sent across the backplane uses a protocol to check that there is space available at the destination module so
that fabric data is not lost.
6600 series accessories
To facilitate deployment, high-availability configurations, and sparing, the 6600 series offers a variety of
accessories to meet a range of needs. Table 4 summarizes the various 6600 series accessories that are
available.
Product # Description
J9305A HP ProCurve 6600 Switch Premium License
J9269A HP ProCurve 6600 Switch Power Supply
J9271A HP ProCurve 6600 Switch Fan Tray
J9469A HP ProCurve 6600 Rack Mount Kit
J9480A HP ProCurve 6600 Air Plenum
J9481A HP ProCurve 6600-24G/24G-4XG Plenum
Table 4: 6600 series accessories
HP ProCurve 6600 Switch Premium License (J9305A)
With a flexible approach to upgradability and licensing, the 6600 switches can run the base feature group
initially, and then be upgraded later to run the Premium License feature group. The Premium License offers
advanced Layer 2 and 3 capabilities, including Q-in-Q, VRRP, PIM-SM, PIM-DM, and OSPFv2, and OSPFv3.
The Premium License can be transferred to another switch, as long as the license remains in the 6600 family.
HP ProCurve 6600 Switch Power Supply (J9269A)
See reference in earlier text to HP ProCurve 6600 Switch Power Supply (J9269A).