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Hi Levi, I'm seeing the loss on traffic going from 4200 to 4500. (Whether it's egress of the 4200 or 4500 ingress, i'm not sure). I'm not 100% sure I know what the infrastructure looks like now-- are there two 4500's? As to whether there's loss to one of the "remote" switches, I'm not sure.... If one of the Neutral Path/Mankato Networks/ CNS connected participants would be up for running iperf for a little while, we could find out fairly quickly. ~Matthew *Matthew Beckwell* - V.P. - Network Operations Advanced Integrated Technologies Office: + *1.952.829.5511 x204*E-Mail: [log in to unmask] On Mon, Sep 19, 2016 at 1:43 PM, Levi Pederson < [log in to unmask]> wrote: > Mathew, > > Is the dropped traffic crossing the Exchange from the 4200 to one of the > other switches or is it random? > > Thank you, > > > *Levi Pederson* > Mankato Networks LLC > cell | 612.481.0769 > work | 612.787.7392 > [log in to unmask] > > > On Mon, Sep 19, 2016 at 1:37 PM, Matthew Beckwell <[log in to unmask]> > wrote: > >> Greetings, >> I wanted to see if anyone here has any thoughts on a small amount (<1%) >> of packet loss I've been trying to chase down, specific to the MICE EX4200 >> switch. >> >> Aitech/AS13746 has a 1G copper port on the EX4200 switch. It seems that >> we're seeing a small amount of outbound packet loss (1G to 10G) going >> participants outside of the EX4200 switch. >> >> I might expect this going from 10G to 1G (inbound for us), but it's the >> opposite where we see the problem: 1G to 10G participants. >> >> Doug at ipHouse (ge-1/0/3 on the EX4200) fired up iperf and we did some >> testing. They're in the same situation: Loss leaving the EX4200. >> Specifically, I was testing over to US Internet (xe-0/0/14) but seeing it >> via Onvoy as well. >> >> The iperf test I was running was UDP, bandwidth of 69000, and packet size >> of 172, running in both directions. Essentially--emulating a G.711 SIP >> call (which is how I noticed the loss). I tested with no loss in both >> directions within the EX4200. >> >> Doug mentioned: >> >> >I pulled the VC chassis stats, but it has nothing for drops or >> re-transmits for it. >> >> Maybe some of our Juniper-centric members have suggestions? It's quite >> possible it's always been like this-- the loss is small enough that's >> managed to evade monitoring. I suspect everyone on the EX4200 is affected. >> >> ~Matthew >> >> >> ------------------------------ >> >> To unsubscribe from the MICE-DISCUSS list, click the following link: >> http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1 >> > > > ------------------------------ > > To unsubscribe from the MICE-DISCUSS list, click the following link: > http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1 >