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Forum Discussion
xr700 cannot find Internet through SFP+ port
Hi all,
I have recently purchased an XR700 router in the hope of being able to switch the router from the provider. According to my provider I am allowed to use my own router as long as I can configure VLAN10 (802.1q decoupling), I do not need to use a password and I will receive an IP from the DHCP. Nice and smooth.
Furthermore they recommend using a TL-SM321B Transceiver module, which is talking on Tx1310nm/Rx1550nm. Strangely enough, the one that is in the router from the provider (Siligence SGA 441SFP0-1Gb) is talking Tx1310nm/Rx1490nm. Support could not resolve this issue, but I have a CISCO compatible GLC-1000BX-U (talking Tx1310nm/Rx1550nm) and a GLC-BX-U (talking Tx1310nm/Rx1490nm) modules. I am aware that none of these are on the official supported modules list, and that the supported modules are duplex, but these are simplex, but as far as I understand (after speaking with the company providing the modules), this should be OK.
The problem is, that no matter which module I plug in, the router keeps giving me an "Error: Make sure that your SPF+ module or cable is connected ot the SFP+ port." error.
As far as I understand the router should also be able to accept the Siligence module, and I have tried with that too, but unfortunately that does not work either.
Any ideas what the issue could be?
Many thanks
Ps.: I do not want to use any media converter, the whole purpose of purchasing this router was that I could use the SFP+ port directly.
15 Replies
- Just commenting to say I hope people who have a similar setup will be able to help and that I'll continue to help any way I can over on the Netduma forum in your original topic.
The old Swisscom confusion
CydTulkas wrote:Furthermore they recommend using a TL-SM321B Transceiver module, which is talking on Tx1310nm/Rx1550nm.
Where ever this recommendation is coming from - it's for a Swisscom business FTTH connection only.
CydTulkas wrote:Strangely enough, the one that is in the router from the provider (Siligence SGA 441SFP0-1Gb) is talking Tx1310nm/Rx1490nm..
As this work on your Wingo (a Swisscom brand..) CPE, Tx1310nm/Rx1490nm is correct, so these colour must be used. Same for Swisscom consumer FTTH 1000BASE-BX based connections btw.
It's known that the Siligence SGA 441SFP0-1Gb (1.25G Tx1310nm/Rx1490nm) has interoperability issues - it simply won't work with various routers. Can't get it to work on the R9000, too.
We deploy for several years ZyXEL USG20-VPN with the Studerus/ZyXEL supplied SFP module (for business connections, or e.g. Init7, so when I have it right also Tx1310nm/Rx1550nm only.To make this post complete, where XGS PON is in place, Wingo does supply LTF7225-BH+ modules (Tx 1270nm/Rx 1577nm if the old cells re correct) with their box - it's however not possible to connect any router or switch to a XGS PON, because this requires a strictly specified ONT (special hardware and software, FMI: Swisscom BBCS Technik Handbuch p.17)
CydTulkasIn your XR700 internet settings you need to enable "DAC" mode. By default its on auto so select the drop down box and select DAC and apply settings. You will then see that the 10G light will start and flash once you have done this.
Then select Monitoring from the options then Statistics and you will see the 10G connection transmitting data and then all your setup and good to go mate.
Kind Regards,
Dogga.CydTulkasthe below info is what helped someone else with the same problem.
The XR700 should automatically pick up the 10gb connection, the only thing we had to change for it to be noticed and work if by the following steps.
1. In XR700 got into internet settings;
2. Under "SFP+ Module Dection": Change that from auto to "DAC mode only"
3. Now the 10gb light should be on the XR700 providing you have a AXM765 Transceiver pluged into the 10Gb port.
Link: https://www.netgear.com/business/products/switches/modules-accessories/axm765.aspx
Once Done
Got into Monitoring in the XR700, then statistics and you should see data flowing in the SFP+ section
See attached photo for your records hope this helps u mate.
Kind Regards,
Dogga
schumaku, I have seen various posts about this - as you quoted - "old Swisscom confusion", but I could not put it together. The too many wavelengths confused me big time. Thank you for the detailed explanation.
So, if I understand correctly, the Siligence module has compatibility issues, and as such I just need another module that works on Tx1310nm/Rx1490nm, and I should be good to go. Do I also understand correctly that the Netgear routers are - and the xr700 in this case is neither - picky about the module we put in? That is, I can use any module that is following the standards and is using the Rx/Tx wavelengths matching with the module from the provider? Also, it does not matter if the router has a 10G port, but I put in a 1G module, does it? I have not found a setting in the DumaOS to scale it down to 1G.
DOGGAVELI, Thank you for your answer as well. I'm a bit confused, however why would I need to use the "DAC mode only" option? I thought DAC means copper only. Of course I'll try that out, I'm just curious why that would be the option to choose?
CydTulkasIt's the only way the 10G will work mate.
I don't know why as in the XR700 manual it says u plug the SFG plug in and it should work but never does. I know many ppl with all types of different setups and connections and this was the ony way it worked for all of us.
Kind Regards,
Dogga
DOGGAVELI interesting idea.
Had run several tests on the R9000 SFP+ in the early days of the router. Various SFP+ (duplex fiber, RJ45) and SFP (duplex fiber), as well as DAC worked like a charm. As the SFP+ WAN feature became available, the SFP BiDi module I had at hand back then (not taken any notes) was recognized, the Internet connection came up.
Quickly retested last night with the spare module (same as yours, in Auto and DAC mode) - the log did not show any indication that the module was plugged, and as expected it was not recognized (no module or no link message). Cross check with an SFP+ RJ45 10G copper - logs in place, WAN port recognized.
The base firmware of the R9000 and the XR700 are very similar, hardware anyway btw.
So, new Cisco GLC-BX-U compatible module, no luck. :smileyfrustrated:
It doesn't matter if I use AUTO, or DAC mode, my xr700 does not want to recognize the module. I have tested the new module in the original router and it works like a charm, so it is the correct module.
DOGGAVELI, you mentioned it works for you. What module do you have?
schumaku, the issue seems to have some experience with this issue. Any idea what simplex, Tx1310/Rx1490 module would work in the router? Is it possible that the router is faulty? How could I test that?
Thanks a million.
