Hello, this is really interesting.
We have a MX204 (Fusion AD, running Junos 18.4R1) + EX4300 (Fusion SD) running and found out you cannot set the port speed on the RJ45 ports of the EX4300 in that combination. We discussed this 3 months because Juniper wanted to tell us that this is by design because MX204 has no ports with variable speed and therefore disabled the "speed" knob in Junos 17.4 for MX204. They still did not provide a solution. If you do not use Fusion and you do not want to change the port speed of the QSFP ports (this requires a restart of the pic, not a full reload, so the 10GBit stay online) the MX204 is great (really fast, commits nearly instant). If you really need RJ45 copper ports that are not switched and have that one or 2 customers that only work with 100MBit fdx w/o autoneg, think about buying MX204 + MPC1 + RJ45 MIC. kind regards Rolf > Yes, since 18.1 the MX204 can be configured to support 1G: > https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/speed-gigether-options.html > _______________________________________________ juniper-nsp mailing list email@example.com https://puck.nether.net/mailman/listinfo/juniper-nsp