You are planning a 1 Gbps link between two CX switches. Which type of SFP port will be required?
Suggested Answer: C
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For a 1 Gbps link between two Aruba CX switches, the appropriate SFP port type is an SFP (Small Form-factor Pluggable). SFP+ and SFP28 are used for higher speeds such as 10 Gbps and 25 Gbps, respectively. QSFP+ is for even higher speeds (40 Gbps).
SFP supports 1 Gbps (1000BASE-X)
SFP+ supports 10 Gbps
SFP28 supports 25 Gbps and above
QSFP+ supports 40 Gbps and above
Therefore, the correct port type for a 1 Gbps link is SFP.
Aruba CX Transceiver and Port Type Compatibility Guide
HPE Aruba Networking Switch Hardware Documentation
Aruba Networking Best Practices for Link Speeds
14 comments · newest first
JA
Jaime
2 months ago
Exactly! SFP+ is cost-effective too.
GE
Gerardo
2 months ago
True, but it’s overkill for 1 Gbps. SFP+ is perfect.
RI
Ricki
2 months ago
But what about A) SFP28? It’s faster, right?
JA
Jaime
2 months ago
Agreed! SFP+ is the right choice. SFP is too slow.
GE
Gerardo
2 months ago
I think it's B) SFP+. It supports 1 Gbps.
MA
Marsha
3 months ago
I thought QSFP+ was for higher speeds, not 1 Gbps.
DO
Dorothy
3 months ago
SFP28 is overkill for 1 Gbps, right?
LU
Luisa
3 months ago
Wait, isn't SFP also an option?
LE
Leota
3 months ago
Definitely SFP+, no doubt about it!
AR
Arlie
3 months ago
You need SFP+ for 1 Gbps.
MO
Moon
3 months ago
I’m a bit confused about SFP28. Is that for 25 Gbps? I just want to make sure I’m not mixing them up.
BR
Brice
4 months ago
I feel like QSFP+ is for 40 Gbps, so that one is definitely out. I think SFP+ is the best choice here.
LA
Lashawn
4 months ago
I practiced a similar question, and I believe SFP is for lower speeds, so it can't be right.
KA
Kasandra
4 months ago
I think it's SFP+, but I'm not entirely sure. I remember something about it being for 10 Gbps links.