XGS1250-12 and SFP+ PM7000-01 XGS-PON transceiver?

HS1542

Hello,

I am trying to figure out how I can skip my Zyxel AX7501-B0 gateway.

When inserting the Zyxel PM7000-01 SFP+ transceiver into the XGS1250-12 switch, I get no link and the port status stays down. Inserting the transceiver back into the AX7501-B0, I get link again.

Please advice on how to get any kind of debug information from the switch in regards to why it is not able to use the SFP+ transceiver? I expected it to be compatible since all are Zyxel parts, but I don't see it listed in the datasheet but I wouldn't expect XGS-PON transceivers to be listed neither..

-BR

Zyxel_Melen

Hi @HS1542,

Apology for the late reply. I took some time to build the test surrounding.

My test result is that the PM7010-R0 can work with XGS1250-12, and the packets can be forwarded.

So, you might need to contact your ISP for changing the Serial number of the SFP module.

If there have any questions, please feel free to ask.

Zyxel_Ivan

Dear @HS1542 ,

 

The XGS1250-12 is not designed for the G-PON use, so it does not support the G-PON's transceiver. 

You can click the link below to have the support list for XGS1250-12:

https://download.zyxel.com/XGS1250-12/datasheet/XGS1250-12_3.pdf

 

Thanks.

 

Ivan

HS1542

Hello Ivan,

Thank you for your reply.
I am not familiar with PONs, but do I understand correctly that for instance the PM7010-R0 transceiver could be used as an alternative to connect a layer2 switch and open up for removal of the AX7501-B0 ?

-BR

mMontana

And I don't think that your ISP will allow anyone to connect to their infrastructure without an authorized CPE.

HS1542

The question stands, will the PM7010-R0 transceiver work on the XGS1250-12 to replace an AX7501-B0 with the PM7000-01 transceiver to gain link/connectivity?

@mMontana: I don't ask for personal opinions or other non-topic comments.

mMontana

@HS1542 if the ISP has the shortlist of MacAddresses of its inventory of devices filtering the XGS-PON infrastructure, you can plug whatever you want, but the connection won't work...

HS1542

@mMontana True enough, I am digging into programmable transceivers. However, the question stands

Zyxel_Melen

Hi @HS1542,

The Zyxel AX7501-B0 gateway cannot be skipped since PON-ONT has a registration process with ISP to enable the link, which the XGS1250 does not support.

We recommend you connect the XGS1250 under the AX7501-B0 gateway.

HS1542

That is fine, but what about the PM7010-R0 transceiver? If I understand correctly, this alone should be able to perform registration, given that the ISP will acknowledge the handshake?

Zyxel_Melen

Hi @HS1542,

The negotiation is between the ISP and the gateway but not the transceiver.

HS1542

For me it seems like the PM7010-R0 will act as the gateway and complete the negotiation.
Just look here: https://service-provider.zyxel.com/na/en/products/fiber-oltsonts/xgs-pon/sfus/pm7010-r0 - Under application diagram you will se an applicable configuration with the transceiver connected to a switch.