I use two different solutions for graphing downstream traffic
1) snmpget the traffic from IF-MIB::ifOutOctets table. This gives me my traffic counts for interface cable / integrated-cable / wideband-cable.
2) bit of a beta/hack, I snmpget (must be snmpv2) counters from CISCO-CABLE-WIDEBAND-MIB::ccwbRFChannelMpegPkts (.1.3.6.1.4.1.9.9.479.1.1.1.6)
oh and for other cases (not this one) where I cannot find a suitable mib, I would write a script that telnets to the CMTS and scrapes the CLI output. You can then serve this as a snmp counter by putting the script into the exec section of a linux snmpd.conf
I use two different solutions for graphing downstream traffic
1) snmpget the traffic from IF-MIB::ifOutOctets table. This gives me my traffic counts for interface cable / integrated-cable / wideband-cable.
2) bit of a beta/hack, I snmpget (must be snmpv2) counters from CISCO-CABLE-WIDEBAND-MIB::ccwbRFChannelMpegPkts (.1.3.6.1.4.1.9.9.479.1.1.1.6)
oh and for other cases (not this one) where I cannot find a suitable mib, I would write a script that telnets to the CMTS and scrapes the CLI output. You can then serve this as a snmp counter by putting the script into the exec section of a linux snmpd.conf