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Forum Discussion
Connect 2 Prosafe GS748TPS over 150m
Hi,
I'm trying to determine the best way to connect 2 Prosafe GS748TPS over a distance of around 150m or so.
I've determined over some of the posts here already that I need to get a couple of AGM731F adapters and connect over the SFP port, but I'm not sure on which kind of cabling to use? Does anyone have any recommendations? Would OM3 be ok?
Also, when connecting the two switches, will they automatically connect or with it need to be configured to extend the network? Will POE also still work on the second switch?
Many thanks,
Nick
25 Replies
Welcome to the community! 🙂
Also, when connecting the two switches, will they automatically connect or with it need to be configured to extend the network?
They will automatically connect. Kindly observe the behavior of the corresponding LED lights.
Will POE also still work on the second switch?
Yes.
Regards,DaneA
NETGEAR Community Team
Hi DaneA thanks for your comments, that's great.
In regards to the two switches, one is a G748TPS and the other is a G752TPS, they have different firmwares, will this cause any issues?
Do the SFP modules need to go in an any particular way so as there is a 'master' (the main switch) and 'slave' (the switch that's connecting to extend)?
Many thanks,
Nick
If you will be just connecting the GS748TPS and GS752TPS switches using the AGM731F SFP module over a distance around 150m, then it is possible.Be informed that the GS748TPS and GS752TPS switches are NOT compatible to be stacked together (wherein one switch is the stack master and the other switch is a stack member). It is because the GS748TPS and GS752TPS switches have different hardware platforms and different firmware versions.
The GS748TPS is compatible to be stack with the GS724TPS. You can either stack 6 GS748TPS or stack 6 GS724TPS. Also, you can stack a mix of GS748TPS and GS724TPS (for example: 3 GS748TPS and 3 GS724TPS). As reference, kindly check the data sheet here.
The GS752TPS is compatible to be stack with the GS728TS, GS728TPS and GS752TS switches. You can only stack up to 6 switches. For example: stack 6 GS752TPS or a mix of 2 GS728TS, 2 GS728TPS and 2 GS752TS switches. As reference, kindly check the data sheet here.
Regards,
DaneA
NETGEAR Community Team
Sorry to post this as an answer as it is really an on-topic question.
And when replying please don't point out the items referred to are end of life and recommend alternatives.
Currently I have two GS728TP switches, located in separate buildings, linked together via a 3x 1Gbs fibre LAG, thus in theory giving up to 3 Gbs connection speed and still maintaining 2 Gbs if a fibre path fails, the traffic between them includes a lot of continuous data streams from security cameras plus data duplication, hence just a single 1 Gbs link would cause performance issues. I currently use Finisar fibre SFP modules, these are tri-rated 1/2/4 Gbs, and operate perfectly at 1 Gbs when installed in the GS728TP (the use of the Finisars reduces spares inventory as they are also used, at higher speed, in fibre channel storage gear).
I am considering swapping the two GS728TP switches for two GS728TPS that I have been offered, to simplify administration by using the stacking feature. If successful, other switches at both locations may also be swapped out for stackable ones to create one centrally managed virtual switch..
Obviously the norm is to use short direct-attach cables to link the stacking ports, which according to the literature operate at 2.5 Mbs, so even with a single link, 2.5 Mbs will still be obtained between the switches.
Now to the root of the question - can the direct attach cables be replaced by fibre SFP modules? Thus allowing the switches to operate as a stack even though they are remote from each other.
And if so would the speed per stacking port be limited to 1 Gbs (the speed of the stacking port if it was configured as a standard ethernet port) or would a higher speed (2 Gbs ?) be attainable with a suitable SFP module? In my application a single 2 Gbs path would be fine but a single 1 Gbs path would not.
A long text I know - for which I apologise - but hopefully it makes my plan clear.
Thanks in advance for those reading it and hopefully submitting an answer.
Steve.
Hello SapSteve
And welcome to the NETGEAR Community! 🙂
According to the datasheet, the GS728TPS supports up to 4 fiber or copper connections. You can configure them as a LAG (Link Aggregation Group) to achieve better speeds across the ports, as a single port will still be limited to 1G speed, even on a fiber link
https://www.downloads.netgear.com/files/GDC/datasheet/en/GS728TS-GS728TPS-GS752TS-GS752TPS.pdf
Have a lovely day,
Erwin
Netgear TeamThanks for that, but I am already using 3x 1Gbs fibre paths in a LAG as my existing configuration, the only problem is that when I change configurations (especially those of VLANs) I need to log into and change settings on both switches, this should theoretically be easier if switches capable of stacking were used and thus behaved as a single virtual switch.
The fundamental question was that can GS728TPS switches be stacked with the relevant stacking ports populated with fibre tranceivers rather than by using a direct attach cable? And if it is possible and only a single connection existed would that be limited to 1Gbs rather than the 2.5Gbs allowed by using a direct attach cable, even if the fibre tranceiver module was capable of speeds higher than 1 Gbs, I assume it could be as none of your approved SFP fibre modules are rated for greater than 1Gbs and hence faster modules may not be supported even though the stacking ports themselves are obviously cable of 2.5Gbs.
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