The copper optic warning is 100% based on physical limitations, nothing else. People have “forced” optics into places they should not go, with poor results.
If you need more than a few 10GE-BaseT ports, then yes your best approach would be QFX5100-48T. I would still recommend staying away from EX4550 at this time, as its life expectancy is much less than any new QFX model (that is non-3500/3600). At same time life expectancy of EX4550 is still greater than 5 years, so new QFX will be much longer. My 2 cents worth. Sent from my iPhone > On Aug 7, 2018, at 10:17 AM, Thomas Bellman <[email protected]> wrote: > >> On 2018-08-07 14:21, Giovanni Bellac via juniper-nsp wrote: >> >> Sorry, my first email was not clear enough that I require Base-T >> (copper) ports. >> QFX5110 etc. are looking great on paper, but with copper optics the >> docs are saying: >> ### >> Caution >> Do not place a copper transceiver in an access port directly above or below >> another copper transceiver. Internal damage to the access ports and switch >> can occur. For copper transceivers, we recommend either using the top port >> row exclusively, or the bottom port row exclusively. >> ### > > Some TP transceivers are small enough that it isn't a problem. But be > careful, and verify, if you go down that route. > > More importantly, 10 Gbit/s TP transceivers are not supported. You can > buy such transceivers from some third-party vendors, but they *are* > violating the specifications for SFP+ ports, drawing more power than > SFP+ ports are required to deliver. It might work, as many switches > can deliver more power than the spec requires, or it might not. Or it > might work for a few transceivers, but not if you fill all ports with > such transceivers. > > So, I agree, if you need 10Gbase-T, then the QFX5110 or EX4600 is not > what you should look at. > >> So the options are limited with EX4550-32T and QFX5100-48T... >> Kind regardsGiovanni > > There is also the EX4300-48MP, with 24 TP ports that do 10/100/1000 > Mbit/s, and 24 TP ports that do 1/2.5/5/10 Gbit/s. There is also a > slot for a module where you can get four SFP+ ports, two QSFP ports, > or one QSFP28 ports, if you need a couple of fiber connections. > > I'm assuming that the EX4300-48MP is cheaper than a QFX5100-48T, but > I have never priced one, or used one. (Note that I believe you need > to buy an extra license to run OSPF, or use VRFs, on the EX4300, while > that is included in the base license for QFX5100. Both require extra > license to run BGP or IS-IS.) > > > /Bellman > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
