Stacking or 10GE link between two 3750

[aotholland]

Dear expert,

We have two 3750 stackable switches in core layer.

What can you recommend?

1. We are planning to stack two 3750 for greater bandwidth to use

2. We could configure 10GE link (by Network module) between these two switches

which solution provides increased bandwidth and redundancy?

Kndrgds.

[Karsten Iwen · Accepted solution]

Stacking gives you a 32GBit interconnect, so the bandwidth will be higher.

More important, if you stack your switches, the complete redundancy setup for your network changes. The stack is configured as one logical switch and you can connect channels to both stack members. The stack has one IP that is used as next hop for the adjacent systems and you don't need to deal with a FHRP like HSRP or VRRP.


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[aotholland]

Karsten,

Thanks for quick reply

which is then better for bandwidth?

which is then better for redundancy?

[Karsten Iwen · Accepted solution]

Both bandwidth and redundancy is better with stacking.

-- 
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[aotholland]

Thank you so much Karsten.

[Joseph W. Doherty]

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Posting

karsten.iwen wrote:
Stacking gives you a 32GBit interconnect, so the bandwidth will be higher.

If we're dealing with 10G interfaces on 3750s, this would imply a -E or -X model or the "rare" original 3750G-16TD with the single 10g port (with 1.25:1 oversubscription).  -E and -X models have StackWisePlus 64 Gbps (actually dual 16 Gbps, duplex).  Original 3750 series have StackWise 32 Gbps (actually dual 8 Gbps, duplex).

PS:

Like Karsten, definitely recommend using (both) the stack ports for a dual stack.