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New Member

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2 Messages

Fri, Jan 21, 2022 1:55 PM

BGW320-505 The 5gig RJ45 Port

Does this port require a 10 gig port to authenticate and negotiate down to 5 gig?  Or does this port only authenticate with a 5 gig port?

ATTHelp

Community Support

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192.2K Messages

5 m ago

We are here to help you with your ethernet port, LoadingStill.

 

Here is more information about getting started with your gateway.

 

We suggest that you check out the manual about the BGW 320 gateway as this will help answer your questions about the ethernet port.

 

Let us know if this helps.

 

Marc, AT&T Community Specialist

tonydi

ACE - Guru

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5K Messages

5 m ago

Or, you could just post the one line in the whole link that has anything to do with the Ethernet ports.....

Blue ports support data transmission speeds of up to 5Gbps. They’re also compatible with 10/100/1000 Mbps and 2.5Gbps connections.

@LoadingStill  I'm not really clear on your question but does that answer what you wanted to know?

New Member

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2 Messages

5 m ago

@tonydi 

I am asking in the sense that I am passing my IP through and I have a 10 gig SFP+ dual NIC in my pfSense box and I want a 5gig connection to the pfsense box.
Can I just use any 10 gig card or do I have to find one that has a protocol of 5gig?

ATTHelp

Community Support

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192.2K Messages

5 m ago

Hi, @LoadingStill!

 

We suggest you contact our premium support team, Tech360, as they would be best suited to assist with your third party router. 

 

Don't hesitate to reach back out if you ever need our assistance again. Thank you for choosing the AT&T Community Forums!

 

CalebP, AT&T Community Specialist 

tonydi

ACE - Guru

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5K Messages

5 m ago

I have no idea.  Just looking around I see some of the cards are only capable of 1Gb/10Gb, but others show 1/2.5/5/10.

Maybe someone with experience with this level of equipment will pop in here and give you info based on real facts.

JefferMC

ACE - Expert

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28.8K Messages

5 m ago

There is one 5 Gbps Ethernet LAN port on the BGW320.  It will do 5 Gbps.  If your device is 10 Gbps capable, hopefully the two will negotiate at 5 Gbps link.  Will they for sure, don't know.  Should.  Might not. (A coworker used to tell me "Should bees don't make no honey.")

You could get an Ethernet Switch with 10 Gbps / 5 Gbps ports just to connect the two, but that's an expensive adapter.

Contributor

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3 Messages

1 m ago

This shows up on search engines, so I thought I would try to clear up some confusion for whoever may be next in search-land.

A 10GBASE-T device will only work at 5GbE/2.5GbE if it supports NBASE-T (IEEE 802.3bz, ratified in 2016) - that means 10GBASE-T was ratified for almost 10 years before this step-down was available.

Some of the cheaper devices that you might find on eBay like the intel X540-T2 do not support NBASE-T and you will be disappointed - if you want an intel NIC, move up to the X550 for NBASE-T support and for anything else, verify that you see 2.5gbps/5gbps on the official mfg spec sheet (not just on the merchant page).

dave006

Scholar

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3K Messages

1 m ago

@LoadingStill 

Not all 2.5/5/10 MultiGig cards are the same. The older 10 G cards have a serious lack of driver support now I would suggest you switch away from Ethernet as close to your 5 Gbps port as possible.


So I bought a USB 2.5G adapter and plugged directly to the multi-gig port of the modem.

(IP passthrough is on) Zyxel (XGS1010-12-ZZ0101F) switch that has 2 SFP+ ports and 2 2.5GBE ports. $149 on amazon it was the cheapest "media converter" I found.

It is also fanless. Here is the path from Port 1 on the BGW320.

[modem -> zyxel 2.5g -> sfp+ to UDMP] 2.5 Gbps Adapter and Ultimate Dream Machine (UDM) Pro

So far the fast cards have been MikroTik for both 2.5 GHz and 5 GHz with a good selection of drivers. Other cards worked but not at all speeds 1 Gbps, 2.5 Gbs, and 5 Gbs and not to mention many older modules wanted to default to 10 Gbs (ugh).

Note: Port 1 is 100/1000/2.5/ 5 Gbps Auto syncing on the BGW320 and a switch is always a good buffer for the SPF+ logic due to the small on card memory.

Dave

(edited)

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