Looks like you’re right. Too many 7xxx model numbers. Either way, same result. The MAC layer in the switch treats it like a QSFP port would be.
From: Tim Jackson [mailto:jackson....@gmail.com] Sent: Monday, February 5, 2018 9:11 PM To: Ryan, Spencer <sr...@arbor.net> Cc: Hunter Fuller <hf0002+na...@uah.edu>; nanog list <nanog@nanog.org> Subject: RE: 40G reforming I'm pretty sure that this is only available on 7150S which is FM6000, not broadcom at all. On Feb 5, 2018 8:00 PM, "Ryan, Spencer" <sr...@arbor.net<mailto:sr...@arbor.net>> wrote: You don’t use 40G modules at all. Just 4 x 10G SFP+. The Broadcom trident chip is configured at the MAC layer for 40G, so it’s identical to a real 40G port inside. Some more reading: https://www.arista.com/assets/data/pdf/Whitepapers/AgilePorts_over_DWDM_Final.pdf<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.arista.com_assets_data_pdf_Whitepapers_AgilePorts-5Fover-5FDWDM-5FFinal.pdf&d=DwMFaQ&c=Hlvprqonr5LuCN9TN65xNw&r=Iw8ah1pcqZhOErIjaFRfuA&m=1GOFqbxSE-spnoqK6oWQyxvqITqv3mK5XVCJqjQhA74&s=E99kPeHk0OBu00zJn7reL1aPDNkD3rMtzGZMWJPAcvI&e=> Spencer Ryan | Senior Systems Administrator | sr...@arbor.net<mailto:sr...@arbor.net><mailto:sr...@arbor.net<mailto:sr...@arbor.net>> Arbor Networks | The security division of NETSCOUT +1.734.794.5033<tel:%2B1.734.794.5033> (d) | +1.734.846.2053<tel:%2B1.734.846.2053> (m) www.arbornetworks.com<http://www.arbornetworks.com><http://www.arbornetworks.com/> From: Hunter Fuller [mailto:hf0002+na...@uah.edu<mailto:hf0002%2bna...@uah.edu>] Sent: Monday, February 5, 2018 2:57 PM To: Ryan, Spencer <sr...@arbor.net<mailto:sr...@arbor.net>> Cc: Marian Ďurkovič <m...@bts.sk<mailto:m...@bts.sk>>; Baldur Norddahl <baldur.nordd...@gmail.com<mailto:baldur.nordd...@gmail.com>>; nanog@nanog.org<mailto:nanog@nanog.org> Subject: Re: 40G reforming I suspect that implies that you can just take a 40Gbase-SR4 module and break it out into individual "10G" multi-mode pairs for DWDM use. Has anyone tried this? I'm also very interested in using that strategy. On Mon, Feb 5, 2018 at 1:36 PM Ryan, Spencer <sr...@arbor.net<mailto:sr...@arbor.net><mailto:sr...@arbor.net<mailto:sr...@arbor.net>>> wrote: Indeed. Arista does (did?) make at least one platform where you can do this. -----Original Message----- From: NANOG [mailto:nanog-boun...@nanog.org<mailto:nanog-boun...@nanog.org><mailto:nanog-boun...@nanog.org<mailto:nanog-boun...@nanog.org>>] On Behalf Of Marian Durkovic Sent: Monday, February 5, 2018 2:33 PM To: Baldur Norddahl <baldur.nordd...@gmail.com<mailto:baldur.nordd...@gmail.com><mailto:baldur.nordd...@gmail.com<mailto:baldur.nordd...@gmail.com>>> Cc: nanog@nanog.org<mailto:nanog@nanog.org><mailto:nanog@nanog.org<mailto:nanog@nanog.org>> Subject: Re: 40G reforming Many switches based on BCM Trident ASIC allow you to configure 4 consecutive SFP+ ports as 40G link (not LACP, but using real hardware 40G framing). In such case, you can plug 4 DWDM SFP+ modules directly into the switch, without the need for any reformer. M. On Mon, 5 Feb 2018 20:03:33 +0100, Baldur Norddahl wrote > I may need to clarify that I do not want to break the port into 4x10G > as such. To the switch this will be an ordinary 40G link to another > switch far away. > > I want to take advantage of the fact that 40G is transported as four > individual streams. Each of the four streams are to be converted from > 850 nm to a 1550 DWDM channel (one channel per stream). And the > reverse at the other end of the link. > > The point of doing this is that 40G DWDM modules are not generally > available and neither are 80 km modules. > > I need a true 40G channel so 4x10G LACP is not an option here. For the > same reason I am unable to accept a solution that splits the 40G port > into 4x10G and then perhaps recombines using LACP. Instead I am > looking at an optical solution that is invisible to the switch hardware. > > The only doubt I have about the proposed solution is whether the frame > format of the 10G substreams is somehow incompatible with what goes on > in the reformer. As I understand these reformers they are little more > than two SFP(+) modules connected back to back. And therefore it > should not matter that the frame format may be different. > > Regards > > Baldur > > Den 5. feb. 2018 7.20 PM skrev "Paul Zugnoni" > <p...@wish.com<mailto:p...@wish.com><mailto:p...@wish.com<mailto:p...@wish.com>>>: > > Whether a 40G port can be broken into 4x10G is dependent on the > router/switch hardware and the optic you use. Good news is that most > 40G ports are capable of being broken out into 4x10G, since a 40G port > is usually operating as 4x10G internally anyway to the ASIC. The QSFP > you'll need would be a 40G-SR4 for MTP/Multimode or 40G-LR4 for > MTP/Singlemode (or a lower power, less expensive equivalent). This is > a pretty common use of 40G ports. All 4 10G ports would then be at > 850nm or 1310nm, which you can then plug into any 10G SR or LR ports. > > What router or switch platform is driving the 40G? > > Paul Z > > On Mon, Feb 5, 2018 at 7:57 AM, Baldur Norddahl > <baldur.nordd...@gmail.com<mailto:baldur.nordd...@gmail.com><mailto:baldur.nordd...@gmail.com<mailto:baldur.nordd...@gmail.com>>> > wrote: > > > Hello > > > > Is it possible to reform a 40G signal as individual 10G links? > > > > The idea is to use a 40G QSFP multimode MTP module such as > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.fs.com_prod > > ucts_44058.html&d=DwIDaQ&c=Hlvprqonr5LuCN9TN65xNw&r=Iw8ah1pcqZhOErIj > > aFRfuA&m=wWoshgttJT0E6q6-qJzP_ZcIrEz_EP88taPCbvAiK2Y&s=_rJfOmyDlGmPG > > C6M5FbhQ1V8_mho1OCpkcuYRNlaOvA&e=. Then connect it using a MTP > > breakout cable such as > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.fs.com_prod > > ucts_68049.html&d=DwIDaQ&c=Hlvprqonr5LuCN9TN65xNw&r=Iw8ah1pcqZhOErIjaFRfuA&m=wWoshgttJT0E6q6-qJzP_ZcIrEz_EP88taPCbvAiK2Y&s=Cz0mCyM3dtcHoZ7lGy7uyroI_Y7AwmKXdnYNFIF0rPI&e= > > to get four dual fiber connectors. These are then connected to four 10G > > SFP+ multimode modules such as > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.fs.com_products_11589.html&d=DwIDaQ&c=Hlvprqonr5LuCN9TN65xNw&r=Iw8ah1pcqZhOErIjaFRfuA&m=wWoshgttJT0E6q6-qJzP_ZcIrEz_EP88taPCbvAiK2Y&s=l-9OAiUxeydRJCJc7d1kTKPVSkwQlkV4xkZFlbFxyRs&e=. > > The reformer could be > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.fs.com_products_43721.html&d=DwIDaQ&c=Hlvprqonr5LuCN9TN65xNw&r=Iw8ah1pcqZhOErIjaFRfuA&m=wWoshgttJT0E6q6-qJzP_ZcIrEz_EP88taPCbvAiK2Y&s=NwCHiC_boNNs7zCOgJFRZ5nmZOVEPBovGYNTtdQ_pCE&e=. > > And finally the reformed signal can be transported using anything > > including DWDM modules such as > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.fs.com_products_44058.html&d=DwIDaQ&c=Hlvprqonr5LuCN9TN65xNw&r=Iw8ah1pcqZhOErIjaFRfuA&m=wWoshgttJT0E6q6-qJzP_ZcIrEz_EP88taPCbvAiK2Y&s=_rJfOmyDlGmPGC6M5FbhQ1V8_mho1OCpkcuYRNlaOvA&e=. > > > > Just using > > fs.com<https://urldefense.proofpoint.com/v2/url?u=http-3A__fs.com&d=DwMFaQ&c=Hlvprqonr5LuCN9TN65xNw&r=Iw8ah1pcqZhOErIjaFRfuA&m=1GOFqbxSE-spnoqK6oWQyxvqITqv3mK5XVCJqjQhA74&s=TMM5BmbJNjmEpwNiIt9CFTehFhTq2IxfYLnHpY87lFs&e=><https://urldefense.proofpoint.com/v2/url?u=http-3A__fs.com&d=DwMFaQ&c=Hlvprqonr5LuCN9TN65xNw&r=Iw8ah1pcqZhOErIjaFRfuA&m=s0btKmr0Z2yc5j4taNFqdO13c28jnsjkla2DQeNIkIY&s=FSMpOpeWl32KxNR-rraOUqpV8n8eP-nhn4jTT8N3mWQ&e=> > > as a reference to the kind of equipment I am > > talking about. Many other vendors offer simelar products. > > > > The motivation for doing this is to get access to the many options > > that are available for 10G optics but not possible with 40G. > > > > Regards, > > > > Baldur > > > > -- -- Hunter Fuller Network Engineer VBH Annex B-5 +1 256 824 5331<tel:%2B1%20256%20824%205331> Office of Information Technology The University of Alabama in Huntsville Systems and Infrastructure
