Link Aggregation with QSFP links on 5672UP

[Turbo727]

Hi Everyone,

I have a question on my mind for quite some time regarding QSFP aggregation on Nexus 5672UP switch hoping gurus here could shield some light.

According to the data sheet, 5672UP supports 6 true QSFP. I am in a situation where a server require 2xQSFP(40Gbps) links to be bundled together. I wonder with QSFP, can I treat it as normal SFP+ interfaces and aggregate two QSFP links together using vPC to get 80Gbps? If it is possible, it absolutely offers better bandwidth and redundancy.

Thanks,

[Reza Sharifi]

Hi,

Yes, you can aggregate the 2 QSFPs together in a Portchannel. Just remember if the server has 10Gig SFP+ interfaces, you need a special cable with one side with multiple SFP+ interfaces (4) and the other side 40Gig with MTP interface.

If the server has 40Gig interface than you can go straight from the switch to the server.

HTH

[jkilleda]

Hello Ben,

Link Aggregation with QSFP links on 5672UP
QSFP+ evolved as the standard to support 10Gb/s data rates per SFF-8436 whereas SFP+ is an enhanced version of the SFP that supports data rates up to 10 Gbit/s.

http://www.fiber-optic-transceiver-module.com/what-are-the-differences-between-sfp-sfp-xfp-qsfpqsfp-cfp-and-qsfp28.html

 You can connect two QSFP links together using VPC

https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-qfx-series-understanding.html