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Chapter 6
Cable CPE Commands
profile 2:
profile 3:
Router#
Table 6-12
Table 6-12 MIB Statistics Field Descriptions
Field
DS fifo full
Rerequests
DS mac msg overruns
DS data overruns
Qualified maps
Qualified syncs
CRC fails
HDR check fails
Data pdus
Mac msgs
Valid hdrs
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.
OL-1581-07
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
describes the MIB statistics shown in the display for this command.
Description
Number of times the downstream receive buffer on the router has become
full.
Number of registration requests sent by the router to the CMTS.
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.
Number of times the DMA controller has had downstream data and there
were no free data PDU buffer descriptors to accept the data.
Number of valid MAP messages received by the router.
Number of times the router has received synchronization with the
downstream channel.
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.
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.
Total number of data PDUs (protocol data units) of all types received by the
cable interface.
Number of MAC messages received by the cable interface.
Number of valid MAC headers received by the cable interface.
show controllers cable-modem mac
Cisco Broadband Cable Command Reference Guide
6-105
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