Cisco Broadband Cable Command Reference Guide

Chapter 5 Cable CPE Commands
OL-1581-05
profile 2:
profile 3:
Router#
01 19 1D 03 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
01 19 1D 04 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Table 5-11 describes the MIB statistics shown in the display for this command.
Table 5-11 MIB Statistics Field Descriptions
show controllers cable-modem mac
Field Description
DS fifo full Number of times the downstream receive buffer on the router has become
full.
Rerequests Number of registration requests sent by the router to the CMTS.
DS mac msg overruns Number of times the DMA controller has had a downstream MAC message
and there were no free MAC message buffer descriptors to accept the
message.
DS data overruns Number of times the DMA controller has had downstream data and there
were no free data PDU buffer descriptors to accept the data.
Qualified maps Number of valid MAP messages received by the router.
Qualified syncs Number of times the router has received synchronization with the
downstream channel.
CRC fails Number of cyclic redundancy checks (CRCs) generated by the far-end
device that did not match the checksums calculated from the message
portions of the packets received.
HDR check fails Number of cyclic redundancy checks (CRCs) generated by the far-end
device that did not match the checksums calculated from the MAC headers
of the packets received. The MAC header CRC is a 16-bit Header Check
Sequence (HCS) field that ensures the integrity of the MAC header even in
a collision environment.
Data pdus Total number of data PDUs (protocol data units) of all types received by the
cable interface.
Mac msgs Number of MAC messages received by the cable interface.
Valid hdrs Number of valid MAC headers received by the cable interface.
Below the MIB statistics in the show controllers cable-modem 0 mac hardware display, the BCM3300
registers section shows the DMA locations of the indicated processing routines of the Broadcom 3220
MAC chip within the router.
Cisco Broadband Cable Command Reference Guide
5-101