46 Sun Crypto Accelerator 4000 Board Installation and User’s Guide • May 2003
tx-underrun 16-bitloadable counter increments after
a valid frame has been received from
the network.
Unstable
rx-length-err 16-bitloadable counter increments after
a frame, whose length is greater than
the value that was programmedin the
Maximum Frame Size Register,has
been receivedfrom the network.
Unstable
rx-alignment-err 16-bit loadable counter increments
when an alignment erroris detected in
a receiveframe. An alignment error is
reportedwhen 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 receiveframe 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
whenan Rx_Err indication is generated
by the XCVR over the MII, while a
frameis 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
notcounted 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 hardwarecannot
receivedata because there is no more
receivebuffer space.
Unstable
rx-no-comp-wb Number of times the hardwarecannot
post completion entries for received
data.
Unstable
rx-len-mismatch Number of receivedframes where the
asserted length does not match the
actual frame length.
Unstable
TABLE3-14 TX and RX MAC Counters (Continued)
Parameter Description Stableor Unstable