System information

Configuring the CMTS
6-117
y is the cable interface number, which is 0.
stats provides upstream information in a statistical format.
signal-quality displays upstream port RF signal quality information.
spectrum displays upstream port spectrum information for power levels
comparing the upstream frequency to the number of microvolts and dBmV.
start-freq is the upstream start of the frequency range from 5000000 to 42000000
Hertz (Hz).
end-freq is the upstream end of the frequency range from 5000000 to 42000000
Hertz (Hz).
Figure 6-13 displays the show interfaces cable upstream command output:
Figure 6-13 show interfaces cable upstream Command Output
Viewing CM Information
The show cable modem command, listed in Table 6-11, lets you view statistical
information about cable modems (CMs) connected to the BSR. The information
gathered helps you to evaluate network performance, troubleshoot registration
problems, and determine registration status and learn ranging information.
Table 6-11 describes the show cable modem command output column fields.
Table 6-11 Cable Modem Fields
Field Identification
Interface CM interface with active connection
Upstream IF Index Upstream interface to which the cable
modem belongs.
Prim SID Primary Service Identifier number.