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Author Topic: 5510/5520 10gb SFP?  (Read 37599 times)

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Offline JaySmith

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5510/5520 10gb SFP?
« on: May 20, 2014, 09:51:22 AM »
Rather than having 8x1gb nic's LAGed together under a multi-link trunk, I was wondering if I can use one of the 4 SFP ports to connect my server to the switch. Also, I have no idea what's going to work, what's compatible, and so on.

This is my home lab, I don't have a service contract. The machine doesn't saturate the 8gb link, I just thought it would be cleaner, and nice to learn a bit about a new technology that I haven't used before. Still, I have 6 high speed SSD's on the server in question, which store vhd's for 15 virtual machines, which are accessed by 5 VM servers in failover config, so in theory, the ports could be saturated if the demand came.

I found this, with cables/adapters. If I picked up a pci-e 10gb nic, I would try to plug them in and see what works:
-ebay.com/itm/EMC-10Gb-SFP-direct-attach-Twinax-cable-1m-ACTIVE-SFP-TO-SFP-038-003-775-/251503401351?pt=US_Optical_Fiber_Network_Cables&hash=item3a8ec55987

This is just a guess though, if I'm completely off base, please let me know.


Offline Telair

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Re: 5510/5520 10gb SFP?
« Reply #1 on: May 20, 2014, 10:02:00 AM »
Sorry, nope.  The 5510's and 5520's only have 1Gig SFP ports where as that is a 10Gig SFP+ part.  SFP+ ports can operate at 1Gig or 10Gig.  But SFP ports can't do 10Gig.  If you put a 5530 in the stack it would have 2x10Gig XFP ports you could use.

Offline JaySmith

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Re: 5510/5520 10gb SFP?
« Reply #2 on: May 20, 2014, 10:07:16 AM »
That's rough. Thanks for the response though. Unfortunately the 5530 is a bit more than I'm looking to spend at the moment. Right now I have the 5510-48T and 5520-24T which I'm getting ready to put together, I have 3 cascade cables so I could add a 3rd. Is there any other way you can think of that might give the SFP+ ability?

Offline Telair

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Re: 5510/5520 10gb SFP?
« Reply #3 on: May 20, 2014, 10:15:08 AM »
The only way would be to put in to the stack another switch that has 10Gig ports built-in.  That's either the 5530 or one of the 5600 family of switches that have 10Gig XFP ports on them.  There's no way to retrofit 10Gig on to a 5510 or 5520.

Offline JaySmith

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Re: 5510/5520 10gb SFP?
« Reply #4 on: May 20, 2014, 11:06:13 AM »
Thank you for the info. I thought maybe there might be a bare SFP+ box that could hook in via cascade. Can the 5600 series hook into 5500 via the cascade cable?

Offline Telair

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Re: 5510/5520 10gb SFP?
« Reply #5 on: May 20, 2014, 11:48:56 AM »
Yes, the 5600's are backwards compatible with 5500's and can stack with them via the rear stacking cables.  If you do stack 5600's and 5500's though, it is recommended to make the most advances switch the base unit.  Of course the ultimate solution would be to get a single ERS 5698 which has 98 x 10/100/1000 copper, 6 x SFP ports and 2 x 10Gig XFP ports all in one box!
« Last Edit: May 20, 2014, 11:52:05 AM by Telair »

Offline CptnBlues63

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Re: 5510/5520 10gb SFP?
« Reply #6 on: May 20, 2014, 11:53:18 AM »
Thank you for the info. I thought maybe there might be a bare SFP+ box that could hook in via cascade. Can the 5600 series hook into 5500 via the cascade cable?


I have a couple mixed stacks with one 5698 and one or more 5500's.  They work well together.  You have to remember to set the stack to "hybrid mode" and always make the newest (most advanced) switch the base.

Offline JaySmith

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Re: 5510/5520 10gb SFP?
« Reply #7 on: May 20, 2014, 12:50:34 PM »
Yeah, I just looked at what I could get a 5600 series for, and almost fell off my chair. Definitely not a "need" item. Once I finish rebuilding the rack I'm going to pull a plug on a server and see how hard the failover hits the nic's when 4 vm's are suddenly transfered to the remaining 4 servers. If it comes close to peaking the 8gbps, I'll probably invest the $350 for a 5530 series.

Looking into the 5698TFD, it's only $1100... Cheaper than the 5650 by about $700, and with more stuff! Some day, maybe... but now my wife will kill me.