Whiteboard Accessories User Manual
46 Sun Crypto Accelerator 4000 Board Installation and User’s Guide • May 2003
tx-underrun 16-bit loadable counter increments after
a valid frame has been received from
the network.
Unstable
rx-length-err 16-bit loadable counter increments after
a frame, whose length is greater than
the value that was programmed in the
Maximum Frame Size Register, has
been received from the network.
Unstable
rx-alignment-err 16-bit loadable counter increments
when an alignment error is detected in
a receive frame. An alignment error is
reported when a receive frame fails the
CRC checking algorithm, AND the
frame contains a noninteger number of
bytes (that is, the frame size in bits
modulo 8 is not equal to zero).
Unstable
rx-crc-err 16-bit loadable counter increments
when a receive frame fails the CRC
checking algorithm, AND the frame
contains an integer number of bytes
(that is, the frame size in bits modulo 8
is equal to zero).
Unstable
rx-code-violations 16-bit loadable counter increments
when an Rx_Err indication is generated
by the XCVR over the MII, while a
frame is being received. This indication
is generated by the transceiver when it
detects an invalid code in the received
data stream. A receive code violation is
not counted as an FCS or an Alignment
error.
Unstable
rx-overflows Number of Ethernet frames dropped
due to lack of resources.
Unstable
rx-no-buf Number of times the hardware cannot
receive data because there is no more
receive buffer space.
Unstable
rx-no-comp-wb Number of times the hardware cannot
post completion entries for received
data.
Unstable
rx-len-mismatch Number of received frames where the
asserted length does not match the
actual frame length.
Unstable
TABLE 3-14 TX and RX MAC Counters (Continued)
Parameter Description Stable or Unstable