Scientific Atlanta EMTA DPC2425 MIBs - to reset ethernet interfaces.

Question

Hi,
I need to get the correct MIB to reset the physical ethernet ports of the EMTA model DPC2425.
I have tried the standard OID 1.3.6.1.2.1.69.1.1.3.0 that works on others DPC versions but with the DPC2425 "switch embeded" does not work. Also I tried this tow OIDs
1.3.6.1.4.1.1429.77.1.3.15
1.3.6.1.4.1.1429.77.1.3.17
We need that the Ethernet Interfaces shutdown and power On after applying the correct OID. The idea is that the CPE behind the EMTA detects a link "failure" or down to refresh the DNS cache. This is for use a captive portal seved to clients.
We have applied this SNMP instruction with the default MIB
[root@optimus ~]# snmpset -v 2c -c private 10.55.26.243 .1.3.6.1.2.1.69.1.1.3.0 i 1
SNMPv2-SMI::mib-2.69.1.1.3.0 = INTEGER: 1
The result is a logical reset of the ethernet interfaces, but not Physical "This mean there`s not a LINKUP - LINKDOWN". The PC behind the EMTA only detects that the default gateway is not answering.
I appreciate your help.

Answer 1

Unplugging the power to the cable modem for 30seconds should be good enough. As for the router, you should be able to get by without a reset if it is set to DHCP for the internet connection type. 
I don't work for Cisco. I'm just here to help.