On Apr 1, 2013, at 15:52, Morgan McLean <wrx...@gmail.com> wrote:
> Hey guys... > > So I just bought a bunch of avago SFP+'s from a local distributor, about > 250 of them, so I'm in relatively deep here. > > I'm wondering if I just made a general mistake by adding another 20gbit of > MM OM3 with these new modules to an existing 20gbit AE which is using DAC. > I started noticing framing errors mostly on the two additional links I had > added. It was around 100-300 per second per interface..the DAC interfaces > were fine. The AE was only pushing around 1-2gbit duplex at the time when I > noticed it (packet loss), and I shut down those interfaces. > > I'm using these modules to convert existing top of rack connections from > twinax/DAC to fiber, which I haven't started, but I DID just roll out > another 8 cabinets using these modules, and so far I haven't seen any > framing errors...but then again I'm not pushing much traffic. I also didn't > see these issues when I tested a couple modules before we bought them... > > The core AE is between two EX8208's, and the TOR connections are going out > from the core to EX3300's. > > Here are the stats for one of the cabinet AE's from the core switch side, > which looks clean: > > Interface: ae5, Enabled, Link is Up > Encapsulation: Ethernet, Speed: 20000mbps > Traffic statistics: Current delta > Input bytes: 264708836 (2040 bps) [1928] > Output bytes: 5520922123 (23832 bps) [25257] > Input packets: 2013442 (1 pps) [16] > Output packets: 35600334 (22 pps) [256] > Error statistics: > Input errors: 0 [0] > Input drops: 0 [0] > Input framing errors: 0 [0] > Carrier transitions: 18 [0] > Output errors: 0 [0] > Output drops: 0 [0] > > The EX3300 side looks good, as well as the AE for the VC between the > 3300's, which also use these modules... > > So at this point I'm wondering if mixing the fiber and DAC connections is a > nono? Due to timing issues? Not sure how that would screw up the frame, but > maybe somebody has more insight. > > -- > Thanks, > Morgan > _______________________________________________ > juniper-nsp mailing list juniper-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/juniper-nsp Although I've actually never done it, I've always assumed you could mix and match media types in an AE. I think you may be right, either mixing them is a no-no, or one/both of them are bad. Try replacing the DAC connections with SFP+ connections or turn up a new AE with only the new SFPs. _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp