Allied Telesis AT-2973T/4, AT-2973SX manual 163

AT-2973SX, AT-2973T, and AT-2973T/4 NetExtreme II Family Adapters Installation and User’s Guide

Table 9. Diagnostic Tests (Continued)

	Test	Description
Number	Name
C2	RBUF Allocation	Verifies the RX buffer (RBUF) allocation
		interface by allocating and releasing buffers
		and checking that the RBUF block maintains
		an accurate count of the allocated and free
		buffers.
C3	CAM Access	Verifies the content-addressable memory
		(CAM) block by performing read, write, add,
		modify, and cache hit tests on the CAM
		associative memory.
C4	TPAT Cracker	Verifies the packet cracking logic block (that
		is, the ability to parse TCP, IP, and UDP
		headers within an Ethernet frame) as well as
		the checksum/CRC offload logic. In this test,
		packets are submitted to the chip as if they
		were received over Ethernet and the TPAT
		block cracks the frame (identifying the TCP,
		IP, and UDP header data structures) and
		calculates the checksum/CRC. The TPAT
		block results are compared with the values
		expected by Broadcom NetXtreme II User
		Diagnostics and any errors are displayed.
C5	FIO Register	The Fast IO (FIO) verifies the register
		interface that is exposed to the internal CPUs.
C6	NVM Access and	Verifies non-volatile memory (NVM) accesses
	Reset-Corruption	(both read and write) initiated by one of the
		internal CPUs. It tests for appropriate access
		arbitration among multiple entities (CPUs). It
		also checks for possible NVM corruption by
		issuing a chip reset while the NVM block is
		servicing data.
C7	Core-Reset	Verifies that the chip performs its reset
	Integrity	operation correctly by resetting the chip
		multiple times, checking that the bootcode
		and the internal uxdiag driver loads/unloads
		correctly.

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