Posted on December 4, 2018 6:23 pm
 |  Asked by kenneth mphumi
 |  68 views
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Hi guys

i’m busy preparing for Arista ACE-A exam but there’s some information i can’t find on the internet.. is there any document out there about AGILE PORT?

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Posted by Jung Hyunsu
Answered on December 4, 2018 11:14 pm

Hi Kenneth,
This is from the configuration guide.
Agile Ports are a feature of the 7150S Series that allows the user to configure adjacent blocks of 4 x SFP+ interfaces as a single 40G link. The set of interfaces that can be combined to form a higher speed port is restricted by the hardware configuration. Only interfaces that pass through a common PHY component can be combined. One interface within a combinable set is designated as the primary port. When the primary interface is configured as a higher speed port, all configuration statements are performed on that interface. All other interfaces in the set are subsumed and not individually configurable when the primary interface is configured as the higher speed port. This feature allows the 7150S-24 to behave as a 4x40G switch (using 16 SFP+) and the remaining SFP+ provide 8 x 10G ports. On the 7150S-52 this allows up to 13x 40G (all 52 ports grouped as 40G) and on the 7150S-64 Agile Ports allows the switch to be deployed with up to 16 native 40G interfaces – 4 are QSFP+ and the remaining 12 as 4xSFP+ groups.

An agile port is an interface that can function as a 10G port or can subsume a predefined set of 10G interfaces to form an interface with higher speed capabilities.
The set of interfaces that can be combined to form a higher speed port is restricted by the hardware configuration. Only interfaces that pass through a common PHY component can be combined. One interface within a combinable set is designated as the primary port.
•To view the set of available agile ports and the subsumable interfaces that comprise them, enter show platform fm6000 agileport map.
•To configure the primary port as a higher speed port, enter speed forced 40gfull or speed auto 40gfull.
•To revert the primary port and its subsumed ports to 10G interfaces, enter no speed.
Example
•These commands displays the agile port map for the switch, then configures ethernet interface 13 as a 40G port.
switch#show platform fm6000 agileport map
 
—————————————————————–
Agile Ports       |        Interfaces subsumed in 40G link
—————————————————————–
Ethernet1         |  Ethernet3      Ethernet5      Ethernet7
Ethernet2         |  Ethernet4      Ethernet6      Ethernet8
Ethernet13        |  Ethernet15     Ethernet17     Ethernet19
Ethernet14        |  Ethernet16     Ethernet18     Ethernet20
switch#config
switch(config)#interface ethernet 13
switch(config-if-Et13)#speed forced 40gfull
 
  WARNING!  Executing this command will cause the forwarding agent
            to be restarted. All interfaces will briefly drop links
            and forwarding on all interfaces will momentarily stop.
 
 
            Do you wish to proceed with this command? [y/N]
 
Ethernet17 configured for 40G.
Ethernet15, Ethernet17 and Ethernet19 are now subsumed.
switch(config-if-Et13)#
This command reverts the agile 40G port to a 10G port and frees its subsumed ports as individual 10G ports.
switch(config-if-Et13)#no speed
 
  WARNING!  Executing this command will cause the forwarding agent
            to be restarted. All interfaces will briefly drop links
            and forwarding on all interfaces will momentarily stop.
 
 
            Do you wish to proceed with this command? [y/N]
 
Ethernet13 no longer configured for 40G.
Ethernet15, Ethernet17 and Ethernet19 are now free.
switch(config-if-Et13)#

Thanks,

Joe

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Posted by Alexis Dacquay
Answered on December 5, 2018 4:21 pm

Hi,

Please refer to DAN-TOI-5.0 document : ‘7150 – Agile Port’ to check the sample outputs when ports are in Agile mode.

The document could be downloaded from the below link:

https://www.arista.com/en/support/software-download > TOI tab > DAN-TOI-5.0

Also, 3rd party article: https://medium.com/@fsjoanna/agileports-an-unique-design-for-connection-on-arista-7150s-64-switch-e0264be974ea

Also some coverage int he 7150S Q&A:
https://www.arista.com/assets/data/pdf/7150S_Q&A.pdf

And simply in the manual
arista.com > documentation > EOS manual > section “Ethernet Ports” > Interfaces > Agile ports
PDF link:
https://www.arista.com/assets/data/pdf/user-manual/um-eos/Chapters/Ethernet%20Ports.pdf

Web link (requires login I think)
https://www.arista.com/en/um-eos/eos-section-10-4-interfaces#ww1142461

Extract:

Agile Ports
Agile Ports are a feature of the 7150S Series that allows the user to configure adjacent blocks of 4 x SFP+ interfaces as a single 40G link. The set of interfaces that can be combined to form a higher speed port is restricted by the hardware configuration. Only interfaces that pass through a common PHY component can be combined. One interface within a combinable set is designated as the primary port. When the primary interface is configured as a higher speed port, all configuration statements are performed on that interface. All other interfaces in the set are subsumed and not individually configurable when the primary interface is configured as the higher speed port. This feature allows the 7150S-24 to behave as a 4x40G switch (using 16 SFP+) and the remaining SFP+ provide 8 x 10G ports. On the 7150S-52 this allows up to 13x 40G (all 52 ports grouped as 40G) and on the 7150S-64 Agile Ports allows the switch to be deployed with up to 16 native 40G interfaces – 4 are QSFP+ and the remaining 12 as 4xSFP+ groups.
Section 10.5.11 describes the configuration of agile ports.

Regards,
Alexis

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