- Oct 9, 2002
- 28,298
- 1,235
- 136
I'm trying to help someone using a DirecTV Genie system with an Arris Touchstone DG860P2 cable modem (firmware 7.5.125). The modem has a built-in router (802.11n, single-band 2.4GHz). I can access it remotely and look at the list of DHCP clients.
He mentioned the Internet streaming functions of the DirecTV system were behaving strangely. One example is that HBO would show an error message indicating that the Internet speed of 0.0kbps was inadequate, but only if he chooses the option to start at the beginning instead of resuming where he was. The Internet connection speed is actually 150mbps, and it seems to work fine for everything else.
Looking at the list of DHCP clients in the combo Arris modem+router, the DirecTV device definitely looks strange! An identical MAC appears 4 times (BC:30:7D:XX:XX:9A), each with a different IPv4 address. All but one of the entries with that MAC say they are using wired Ethernet and the name is "UNKNOWN." The only one with name "DIRECTV-HR44-[REDACTED]" shows the interface is wireless. Shouldn't a wireless interface have a different MAC than a wired Interface or MoCA interface?
The modem was rebooted multiple times and it keeps showing the duplicate MAC with multiple IPs. I changed the DHCP starting address to 192.168.0.150, set the DHCP lease time to 2 minutes, and rebooted again. The one that appears to be wireless and has the "DIRECTV" name still showed in the DHCP clients list for a while (waiting for DHCP leases to expire, even after router was rebooted?). He rebooted the Genie system last night. It seems to be working when he tested initially, but the real test will be this evening. Checking the DHCP clients list today, all entries for that duplicated MAC have IPs from the new range. I no longer suspect a rogue sources of DHCP.
I can't determine if this glitch is caused by the DirecTV Genie or the Arris. Since the Genie is the only device on the LAN doing this, I'm inclined to think the Genie is at-fault. However, even if the Genie kept sending multiple DHCP requests with the same MAC, the Arris should give it the same IP address each time and treat it as one device...right?
He mentioned the Internet streaming functions of the DirecTV system were behaving strangely. One example is that HBO would show an error message indicating that the Internet speed of 0.0kbps was inadequate, but only if he chooses the option to start at the beginning instead of resuming where he was. The Internet connection speed is actually 150mbps, and it seems to work fine for everything else.
Looking at the list of DHCP clients in the combo Arris modem+router, the DirecTV device definitely looks strange! An identical MAC appears 4 times (BC:30:7D:XX:XX:9A), each with a different IPv4 address. All but one of the entries with that MAC say they are using wired Ethernet and the name is "UNKNOWN." The only one with name "DIRECTV-HR44-[REDACTED]" shows the interface is wireless. Shouldn't a wireless interface have a different MAC than a wired Interface or MoCA interface?
The modem was rebooted multiple times and it keeps showing the duplicate MAC with multiple IPs. I changed the DHCP starting address to 192.168.0.150, set the DHCP lease time to 2 minutes, and rebooted again. The one that appears to be wireless and has the "DIRECTV" name still showed in the DHCP clients list for a while (waiting for DHCP leases to expire, even after router was rebooted?). He rebooted the Genie system last night. It seems to be working when he tested initially, but the real test will be this evening. Checking the DHCP clients list today, all entries for that duplicated MAC have IPs from the new range. I no longer suspect a rogue sources of DHCP.
I can't determine if this glitch is caused by the DirecTV Genie or the Arris. Since the Genie is the only device on the LAN doing this, I'm inclined to think the Genie is at-fault. However, even if the Genie kept sending multiple DHCP requests with the same MAC, the Arris should give it the same IP address each time and treat it as one device...right?
Facebook
Twitter