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Forum Discussion
CM1200 w. Port Aggregation = no 192.168.100.1 access?
Question - Is there any way to test performance or see monitoring of CM1200 if using port aggregation??
Trying to complete a setup of the following:
Comcast Xfinity 1200mbps - CM1200 - port 1/ port 2 aggregation - Orbi RBR750
Original setup in morning of CM1200 - tested with direct port 1 use to computer - 600+mbps, Comcast due to come do tuning to improve.
Then added Orbi RBR750 single ethernet connection and satellite using the mobile app process.
All good. Wireless 350+mbps, not wildly out of expectation dropping down (if dissapointing a bit).
To prep for Comcast pushing up 900-1200mbps, set port aggregation on modem, then on router, resets and second ethernet.
No internet connection showing on Orbi. Resets a couple times. Glowing magenta. Some internet, mostly not? Huh?
Reconfigured both for no port aggregation and removed 2nd ethernet connection.
Restarts etc. reset power.
No joy, no Internet on Orbi.
Internet on CM1200 yes, not on connected Orbi RBR.
Call into NG tech support... 36 minute wait.. just start to talk. disconnected.
Call into NG tech support... 12 minute wait...1 hour 6 minutes a full factory reset on both, and setting static IP on RBR. Just got to the conversation about port aggregation ... disconnected. No call back to me.
Call into NG tech support... 5 minute wait (near 11pm now).. 33 mintues to do same setup as I did that morning. Oddly Orbi glowing magenta, 192.168.1.1 Orbi shows no internet, yet internet service is working via WiFi.
But can't get to 192.168.100.1 to admin the CM1200.
Am told I cannot connect a computer direct via Ethernet in port 3 or 4 because port 1-2 have port aggregation.
So if I use port aggregation I can't admin my cable modem??
Answer: since it's setup you don't need to.
So if I use port aggregation I can't do any MONITORING of my cable modem?
Answer: um..no.
Orbi continues to randomly go to glowing magenta, even though there is an internet connection.
So in the morning Comcast comes and I can't show what the Cable Modem is performing?
Only by pulling off the Orbi and putting on just laptop.
I need to call Comcast because they may limit me to one port. Ok... interesting.
Search here and find the postings about limits from Comcast (all big 3).
So to get more than 1G useful to Orbi RBR 750 router, I have to use Port Aggregation.
If I use Port Aggregation, I can't monitor/troubleshoot the CM1200 while the Orbi RBR750 is connected.
Is that it?
PS. And i hope my Orbi satellite can be 32' away from the router since tech support two said it really should be with 20-25 foot. <sigh>
9 Replies
You'll not see anything more that 1000Mpbs thru the Orbi when wired. Due to the LAN ports on the RBR and most current ethernet adapters are limited by 1000Mpbs LAN port speeds.
For wireless, If you have a 4x4 MIMO AX supporting device, you may see over 900Mpbs on wireless thru the Orbi and CM1200 when in LAG mode however in most cases, 900Mpbs would be a max speed. Most phones and pads are 2x2 supporting there there max limites are usually around 500-700Mpbs. I have a ASUS GT-AX11000 and a NG-RAXE500 that in bridge mode would be able to see speeds over 900Mpbs on wifi.
Technically for wired speeds, to get anything over 1000Mpbs, the WAN port and LAN ports on the router and modem and ethernet adapters would need to support 2.5Gb ports. Modems like CM2000, CM2050v, CAX80 and Orbi RBR850 or a RAX series router with higher speed ports. I currently have a 2.5Gb PCI ethernet adapter in one of my PCs. I have a USB C to 5Gb ethernet adapter for testing on my Mac.
Are you saying that Port Aggregation on the CM1200 and ORBI750 does not work?
With Port Aggregation the two pair of connected Ethernet ports should provide 1G+1G for a total capacity fo 2G. There can be a very small amount of packet reordering overhead that decreases that a bit, but it definately should be close to 2G when configured in this fashion.
LAG works on the WAN side however you'll not see anything on the wired LAN side as the ports there are only 1000Mbps. These top out at around 900-950Mpbs.
For wireless, if you have a good solid 4x4 MIMO 5Ghz AX supporting devices, then I beleve you could see over 1000Mpbs on 5Ghz AX if the connection rate between the RBR and this device was at 2400Mpbs with LAG enabled.
