Solution
Possible Problem
Input Error Type(Field Name)
1
Ensure that the line is clean
enough for transmission
requirements. Shield the cable,
if necessary. Make certain that
you are using the correct cable.
2
Make sure that the cable is
within the recommended length
(no more than 50 feet [15.24
meters], or 25 feet [7.62
meters] for a T1 link).
3
Ensure that all devices are
properly configured to use a
common line clock. Set SCTE
on the local and remote DSU.
4
Make certain that the local and
remote CSU/DSU are
configured for the same
framing and coding scheme as
that used by the leased-line or
other carrier service (for
example, ESF/B8ZS).
5
Contact your leased-line or
other carrier service, and have
it perform integrity tests on the
line.
A framing error occurs when a
packet does not end on an 8-bit
byte boundary for one of the
following reasons:
•
The serial line is noisy.
•
The cable is improperly
designed, the serial cable is
too long, or the cable from
the CSU or DSU to the router
is not shielded.
•
SCTE mode is not enabled
on the DSU, the CSU line
clock is incorrectly
configured, or one of the
clocks is configured for local
clocking.
•
A ones density problem has
occurred on the T1 link
(incorrect framing or coding
specification).
Framing errors (frame)
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17
335
Troubleshooting the Serial SPAs
Serial Lines: Troubleshooting Serial Line Input Errors