The bit-interleaved parity with sixteen bit errors (BIP-16) is
generated when the BFrame is created on the ingress and which stays with it
until the cell is extracted on the egress of the switch. The TX
BIP-16 error count is taken at the BIF-TX as the BFrame is
transmitted onto the backplane.
For more information on document conventions, see the
Technical Tips Conventions.
There are no specific prerequisites for this document.
This document is not restricted to specific software and hardware
Because the data path up to the BIF-TX is on a single card,
TX BIP-16 errors indicate an error on the
reporting card, which makes isolating the fault easy. The errors indicate
corruption of the BFrame which should appear as either BFrame Parity or Payload
errors on the trunk or port statistics of the receiving card.
Follow the instructions provided below to clear TX
Replace the card on which the Tx BIP-16 errors occur.
A hardware problem usually results in the maximum rate count being
logged, but can occur only if traffic flows through the card. If less than the
maximum rate is seen, it is possible that the configuration of the BFrame
header for one particular channel may be incorrect. However, a hardware failure
could cause this as well.
If replacing the card does not resolve the errors, or if errors are
occurring on multiple cards, use the switchcc
command to isolate the source of the error if the backplane or crosspoint
matrix are involved.
TX BIP-16 errors on multiple cards have been linked to specific
configuration and heavy data loads for BPX Controller Card-3 (BCC-3) and
BCC-3-32 processor cards. Upgrading both processors to BCC-4V, which allows for
faster performance, can resolve the errors.