With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
adsl2LineStatusAttainableRateDs
ADSL2 Line Status Attainable Rate Downstream
1.3.6.1.2.1.10.238.1.1.1.1.20
Maximum Attainable Data Rate Downstream. The maximum downstream net data rate currently attainable by the ATU-C transmitter and the ATU-R receiver, coded in bits/second.
Back to ADSL2-LINE-MIB MIB page.
IPHost Network monitor allows you to monitor adsl2LineStatusAttainableRateDs on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.