Stacking with X460-G2-48t-10GE4 and a X440-48t-10G best pratices.

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I am building out a 250 person floor.

I've settled on using 1U 48 port switches.

My thoughts on design were this...

Top of stack:  X460-G2-48t-10GE4
Center of stack: X440-48t-10G
Bottom of stack: X460-G2-48t-10GE4

There will be 7 switches used in this stack. I know 8 is max.

I know I can stack these together, I am just confused on best practices.

Ideally I would like to use the 4x10G on each of the X460-G2-48t-10GE4  as my fiber runs to my server room.

Which then bring sup the question how do I link the X460 to the X440... I'm assuming via a stacking module.... But which one? Which cables?

And ultimately does my train of thought above "work".

This is a heavy network office. (Visual FX/Animation studio).
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TS_MTL

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Posted 2 years ago

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Patrick Voss, Employee

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Hi TS_MTL,

I would not recommend stacking a x440 with the x460-G2s. I understand that they can be stacked but the x440 was designed to be an edge switch and therefore is limited in its table sizes. This will essentially diminish the capabilities of the x460-g2s. you can purchase modules for the x460-g2s that will allow you to utilize native stacking with a standard stacking cable.
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Drew C., Community Manager

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If you've already got the equipment, that's okay - I would, however, recommend that the Master and Backup nodes are the X460-G2s.  The standby nodes being X440s will be okay.
Now, the X440-10G models don't have "native" stacking port and will need to use the 10G ports for alternate stacking (aka SummitStackV), thereby using up your 10G connections on the X460-G2s.  It sounds like this will be less than ideal in your situation :-/
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TS_MTL

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Not yet we are going to be purchasing it soon (within weeks).
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TS_MTL

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I understand that it would limit the stable size on the X460 to what it is on the X440...

But 250 people on a floor, 2 floors (trying to move to using stacks on each floor).

The table size limit... with only 250 people on a stack... Shouldn't the 16K table size be fine?

Sorry in advance networking is not my main fortay in computers.. I am slowly getting up to speed (hence me asking these questions here).
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Patrick Voss, Employee

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The issue really lies with layer 3. If you plan on using this as an l2 switch and have another switch take care of the routing then the x440 will work just fine. If you plan on adding IP addresses and having the switch do a ton of routing then you may run into a table issue.
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TS_MTL

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Our routing will be handled by a much beefier core stack.

My last question is what model #'s would the stacking module + cables be? Just so I can be sure when I ask for quotes they get me exactly what I need.

I believe we will be going with the X460 / X440 setup.
(Edited)
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Jeremy, Embassador

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What are you trying to achieve?  Let us know that first, then we can help with a optimal design.  

Are you going for speeds and feeds?  Going for redundancy?  Or you just want to manage one chassis?  Do you have an figures / metrics about your current setup, such as average throughput etc... 
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TS_MTL

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I am growing out a 250 person floor, all machines nfs mount homes/programs.

I am looking for speed/redundancy. My link to my datacenter (offsite) is a 40GBE connection (where storage resides).

So I would like decent bandwidth but not the sole need. (We currently don't come near saturation on our 40GBE link (even with 250 people using it).

Managing one chassis is a nice. But we don't want 1 module chassis (we already have a HP one) and keeping it clean (cabling wise) is ugly (for us).
(Edited)
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TS_MTL

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So the one peice of information I am confused on now is.... Which module do I need?

For stacking wise, would getting a 2x 10GBE in the back be ok to stack to the X440 from the X460?

IE: Summit X460-G2 VIM-2x
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Santhosh Durai, Employee

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Hi

when you use X460G2-10G variant, you no need to buy any additional VIM module to make stack with X440-10G variant.

Use last 2x10G ports in X460G2s to build  a stack.

Based on the distance between Master,Backup and Standby node, select the cable. You can use normal 10G fiber cable with SFP+ to make the stacking port UP