We have an existing ptp 450i we are trying to replace with a pair of 4600 for more capacity. The original 450i link has been in place for a couple of years with no issues. When we try to insert the new 4600 ptp’s (which are running 80mhz in 6ghz with 500/500 link test) the customers immediately complain of poor loading of web pages and speed tests do not work. we swap the radios back and problem immediately goes away. The link is set up in eptp mode, i have tried 5.8, 5.9 and 5.9.1beta with same results. Also have tried the TDD.
It seems this is a radio issue, we have never used the epmp product for ptp before so not really comfortable with this product.
What are the modulation levels and retransmission rates? Do you have a clean frequency with full eirp? We found the 4600 to be pretty optimistic on its internal throughput tests. Doing a mikrotik to mikrotik test we were running quite a bit lower than the internal test. Having said that, we have several 4600 PTP that are working well using 5.9 and RC 5.9.1 with no such issues.
Yes clean spectrum, 57/53 ds 9 to 8. We did mikrotik to mikrotik and was getting 450/450.
Radiowise everything looks good. As soon as we try to pass traffic users complain.
Sounds like a MTU issue perhaps. 450i radios are set to 1700 byte mtu by default. On the ePMP radios you will need to raise it past the default value on both ends if you have anything like MPLS running across the link.
I am new to cambium, is this Acceleration Engine setting something we should be concerned about if we are deploying similar scenarios as the OP? Based on the conversation it doesnt sound like something exposed in the GUI
It really depends. It’s not included in the GUI because I believe most operators (including myself) typically don’t have strange issues with their e4k PtP’s. If you deploy and you’re trying to use MPLS, VPLS, need jumbo packets, having strange issues with VPN’s, or strange throughput issues, then you may want to try disabling the acceleration engine to see if it helps.
