Karl, we're also looking at QFX5100-48S switches for our aggregation. I actually have one in place doing aggregation and routing and the only "big" change I found is the DHCP forwarder config is not remotely similar to the forwarding-options helpers bootp config we've been using to forward DHCP on our MX480 core. But that only counts if you do routing and DHCP forwarding at the QFX.
But, if you want to do routing and DHCP forwarding on this, any forwarding in the default routing instance goes under forwarding-options dhcp-relay and any DHCP forwarding in a non-default routing instance goes under routing-instances INSTANCE-NAME forwarding-options dhcp-relay. There are a ton of DHCP relay options but we found we just need a server group that contains all our DHCP servers and an interface group that ties an interface to a server group. Again I only bring the DHCP relay stuff up because we've been using forwarding-options helpers bootp on our MX's to do DHCP forwarding and the QFX explicitly disallows that in favor of the dhcp-relay. Other than that initial confusion we've not had a problem and I'm very interested in any issues you hear of. This QFX I'm talking about runs Junos 14.1X53-D40.8. I'm also very interested in any other issues people have had doing this. Matt Freitag Network Engineer Information Technology Michigan Technological University (906) 487-3696 <%28906%29%20487-3696> https://www.mtu.edu/ https://www.mtu.edu/it On Tue, Oct 24, 2017 at 8:41 AM, Karl Gerhard <karl_g...@gmx.at> wrote: > Hello > > we're thinking about buying a few QFX5100 as they are incredibly cheap on > the refurbished market - sometimes even cheaper than a much older EX4550. > > Are there any caveats when using the QFX5100-48S as a normal aggregation > switch without QFabric? We have a pretty basic setup of Access (EX), > Aggregation (EX or QFX) and Core (MX). We're only switching at our > aggregation layer but we would like to have options for the future. > > Regards > Karl > > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp > _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
