Posted on September 22, 2016 3:18 pm
 |  Asked by Toshio Taga
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I have some questions about Agile ports

1. What’s purpose to use Agile port ? I understad “Agile Ports allow 4 x 10 Gbps interfaces to be combined into 1 x
40 Gbps interface using hardware”
But,how different port channel ?
Because , if one port down , all of four port come down.

2. May I confirm Agile port need connect 4 ports and traffic is load balancing using all 4 ports?
3. Or, just need to connect one port only ?
4. If one port only use Agile port. SFP is supporting 10G, Agile port said support 40G.
Which type of port is using Agile port? QSFP? SFP+???

Thank you,

Answered on September 26, 2016 11:20 am

Hi Toshi,

Agile ports allow the 4 interfaces to be merged on a hardware level. The main difference between this and a port-channel is that there is the traffic is not distributed across the bundle based on the flow hash, instead the hardware presents a single interface and applies bit striping across all lanes in parallel to get a true 40G pipe – there is no concept of flows or hashing, just bits in parallel.

Yes, 4 ports are required. The traffic is bit striped across all 4 lanes in parallel.
AgilePorts are native 40GbE, the MAC is configured in 40GbE forwarding mode.  The absolute only difference is how this is presented externally, 4 x SFP instead of 1 x QSFP+.

Caveats with this feature are:

  1. All ports of the 40 Gig AgilePort interface e.g. the 4 x 10G transceivers must be the same transceiver type, or type of direct attached cables
  2. The cable lengths of the 4 interfaces should be identical
  3. If any of the 4 ports in the AgilePort goes down, the entire 40Gig interface will go down
  4. We actively test and support AgilePorts based on CR, SRL and SR SFP+. Other configurations are expected to operate assuming appropriate matching cable lengths.

Hope this helps,

Posted by Dave Johnson
Answered on November 26, 2019 6:08 pm

Is there a way to combine these ports into a long-distance LC pair?

The goal would be to utilize a single pair of LC fiber that plugs into a remote single optic: QSFP-40G-PLR4.

From the looks of it, it seems like a 4 fiber pairs would be needed, unless there is sometype of 4xLC fiber pigtail to a 1xLC?

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