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Forum Discussion
CM1200 slows down after 24-48 hours of uptime when using link aggregation
If I hook up my CM1200 to my router (an Asus RT-AX88U) in Link Aggregation mode, it seems to be consistenly slow down to only around 66-ish% of the full connection speed after somewhere between 24 an...
So recently I talked to someone with an enginering sample of the CM1200 and they confirmed Netgear is aware of this problem and have been working on it. From my understaning this problem was known by Netgear before the public product release but here we are with a broken modem on retail shelves. Don't get me wrong the CM1200 is a nice modem but with the LAGG issue is a deal breaker. Hopfuly a GBASE-T or SPF+ modem is released by a manufacturer soon. SFP+ would be awesome HINT HINT NETGEAR
cursixx wrote:So recently I talked to someone with an enginering sample of the CM1200 and they confirmed Netgear is aware of this problem and have been working on it. From my understaning this problem was known by Netgear before the public product release but here we are with a broken modem on retail shelves. Don't get me wrong the CM1200 is a nice modem but with the LAGG issue is a deal breaker. Hopfuly a GBASE-T or SPF+ modem is released by a manufacturer soon. SFP+ would be awesome HINT HINT NETGEAR
Well since they are all probably based on the same chipset the cm1150v also has the same problem, when I enable LAG on mine the speed degrades in 12 to 24 hours so once they fix this for one modem it should fix it for all of the modems having this issue.
- I recently purchased a CM1150v and an ASUS rt-ax88u router. I enabled link aggregation on both the cable modems LAN ports (1&2) and the routers WAN ports (It uses WAN port and LAN 4 for WAN aggregation). Both the router and the cable modem showed that link aggregation was functional. But as a few people have mentioned here my internet speed went from 1000/35 to about 20/30 (down/up Mbps) after 12 hours or less. Also the log page in the router was getting flooded with Net_ratelimit errors because of rapid fire errors being generated. Rebooting the modem and router would re-establish normal internet speeds but the errors in the router log came right back. I've disabled aggregation in both devices for now and speed has not dropped off and error messages no longer appear. I realise my download speed (as rated by my 1Gb package) can be handled by a single network port, but sharing the load on two lines sounds and maybe I'd see higher downloads if it was working properly. Guess I'll keep an eye open on the modem firmware to see if netgear/xfinity ever flash a patch that fixes this issue.