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Redundant SFP+ connection between switches (GS752TXS and M4300-8x8f)
Hello,
I have two GS752TXS switches in my server rack. I use the SFP+ ports to connect them with each other and with my servers. I now want to split my servers in two locations with each location having two switches for redundancy.
I plan to buy 2 Netgear M4300-8x8f for this purpose. I want to connect the same kind of switch with each other over a short distance and the resulting groups with fibre. Ideally I would like to use two fibre cables at the same time for redundancy like this:
GS752TXS -------------------------------------- M4300-8x8f
| |
GS752TXS -------------------------------------- M4300-8x8f
Is this possible? Do I have to configure something to avoid collisions?
Or is there a better way to achieve best possible redundancy within a similar budget?
Ideally I should be able to turn off one switch without loss of connection. I have a storage on one location and would like to keep the VMs on the second location connected, even if one switch has a problem.
Thank You,
Peter
@Modos: What the hell happened to my reply??? Are you serious???
@OPOP
You could stack both GS752TXS together, stack both M4300 together and have a two cables LAG between the two stacks -> you get the redundandy, reduce the amount of configuration, don't need STP, increase the efficiency of load balancing on the switches
To build the stacks, you could use Direct Attached Cables such as AXC761 or AXC763, which are 10Gbps copper, therefore MUCH less expensive than fiber modules -> you get same performance for lower price
Diagram: https://i.imgur.com/3iYsfYF.png
10 Replies
Hi ptoschi,
Welcome to the community! :)
It is possible. You will need to configure STP on the switches.
Also, consider the compatible SFP modules to be used for both GS752TXS and M4300-8X8F switches. The compatible SFP modules for both GS752TXS and M4300-8X8F switches are the following:
Regards,
DaneA
NETGEAR Community Team
Hi,
GS752TXS and M4300-8X8F are stackable (not between each other, but among same model).
Why don't you stack both GS752TXS together and both M4300-8X8F together and build a two cable LAG between both stacks?
You could build the stacks with two 10Gbps Direct Attached Cable, such as AXC761 or AXC763 (much cheaper than SFP+ fiber modules), then have a LAG between both stacks, member 1 to member 1 + member 2 to member 2, using SFP+ fiber module. This way you save several modules and don't even need STP.
Diagram: https://i.imgur.com/3iYsfYF.png
DAC:
https://www.netgear.com/business/products/switches/modules-accessories/axc761.aspx
https://www.netgear.com/business/products/switches/modules-accessories/axc763.aspx
Then on both ends, you can connect your servers to the stack via LAGs spreading accross the members of the stack. So you have a one switch redundancy on each side.
@Modos: What the hell happened to my reply??? Are you serious???
@OPOP
You could stack both GS752TXS together, stack both M4300 together and have a two cables LAG between the two stacks -> you get the redundandy, reduce the amount of configuration, don't need STP, increase the efficiency of load balancing on the switches
To build the stacks, you could use Direct Attached Cables such as AXC761 or AXC763, which are 10Gbps copper, therefore MUCH less expensive than fiber modules -> you get same performance for lower price
Diagram: https://i.imgur.com/3iYsfYF.png
@Modos: What the hell happened to my reply??? Are you serious???
@OPOP
You could stack both GS752TXS together, stack both M4300 together and have a two cables LAG between the two stacks -> you get the redundandy, reduce the amount of configuration, don't need STP, increase the efficiency of load balancing on the switches
To build the stacks, you could use Direct Attached Cables such as AXC761 or AXC763, which are 10Gbps copper, therefore MUCH less expensive than fiber modules -> you get same performance for lower price
Diagram: https://i.imgur.com/3iYsfYF.png
Hi,
thank you for the replies and great ideas. My GS752TXS are already stacked, so the LAG idea sounds good. Although I had some trouble in the past with the GS752TXS. I had 4 of them stacked together and every time one of those 4 lost power (even one at the end), the other three weren't reachable for almost a minute. Is this normal behavior? With real redundancy, all the other switches should keep working, as long as there is a connection between them...
I've never used STP before but it doesn't look too difficult at first glance.
Thank You,
Peter
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