On Thu, Jan 15, 2015 at 10:30:54AM +0100, Richard Hartmann wrote: > I was wondering what experience, if any, you have had with QFX5100. > > Of special interest would be what JunOS version you are running, what > features you have enabled, and if you consider them production-ready.
We are using 48S in production with 13.2X51-D20 & D26, standalone and VC (not VCF), L2 features only (MSTP, RSTP). TISSU worked great up to D20 (completely hitless), but I was told I couldn't use it for getting to D26 (it would fail or cause issues), so I didn't try. The only issue we had was due to PR860226 with xSTP between two QFX5100s: https://prsearch.juniper.net/InfoCenter/index?page=prcontent&id=PR860226 We had the MSTP protocol enabled but specifically excluded the MSTP interface configuration for the link to the other QFX5100 (there is no "protocols mstp interface X disable" command), and RSTP enabled on all interfaces on the other QFX5100 including the uplink to the first QFX5100. In this case, the first QFX5100 interface didn't forward traffic or learn MAC address (except LLDP worked fine). This is what they told me: "This behavior is experienced when we have enabled xstp on the QFX and do not specify a physical interface, what happens when the interface is not included is that the switch does not learn any MAC address therefore it does not send any traffic to its neighbors, as of now the workaround is to include the physical interface, the fix is going to be coming on the 15.X version." Basically, if you enable xSTP but don't include an interface (which should mean that interface should not participate in xSTP--it certainly didn't appear in "show spanning-tree interface" output), that interface won't forward traffic, and it doesn't show as "blocking" anywhere either, even though that is effectively what it is doing--blocking all traffic. BTW, this might also answer your question from October 20 "Spanning tree RJ45 SFP on QFX5100". _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
