I'll disable flow control on both sides today and tell about the results. 2009/8/5 Alex <[email protected]>
> Michael, > Looks like ex4200 might send PAUSE frames to your uplink which could limit > traffic. Try to disable flow-control on both sides and use traffic generator > to test. If you don't have a 10G traffic generator but have a couple of 10G > ports on T-series/MX then cascaded port-mirroring could produce you a 10G > packet stream. > Rgds > Alex > > ----- Original Message ----- > *From:* Michael <[email protected]> > *To:* Alex <[email protected]> > *Cc:* [email protected] > *Sent:* Tuesday, August 04, 2009 8:32 PM > *Subject:* Re: [j-nsp] ex4200 throughput trouble on 10GE interface > > > > 2009/8/4 Alex <[email protected]> > >> Michael, >> Is the throughput impaired only during peak times? Does throughput improve >> after peak hours? > > Traffic goes down in offpeak time to 1G. Difference between inbound and > outbound traffic cannot be seen. The next day peak time the situation > repeats - outbound traffic reaches a limit and does not go upper. Reboot > resolves the situation. > >> Are there any drops/errors on this interface? > > On both sides there are no errors and drops. I check them by "show > interfaces xe-0/1/0 extensive" command. > >> >> Is uplink sending you (perhaps too many) PAUSE frames? > > Uplink is connected to catalyst 6500: > c6500-BGW-XL#sh int te3/6 | i flow > input flow-control is on, output flow-control is off > So as I see uplink shouldn't send pause frames. > On ex4200: > > show interfaces xe-0/1/0 | match Flow > Source filtering: Disabled, Flow control: Enabled > May be I should try to disable flow control on juniper interface? > >> >> Rgds >> Alex >> >> ----- Original Message ----- From: "Michael" <[email protected]> >> To: <[email protected]> >> Sent: Tuesday, August 04, 2009 5:47 PM >> Subject: [j-nsp] ex4200 throughput trouble on 10GE interface >> >> >> Hi all, >>> Recentle I've installed first ex4200 to my core network with 10GE uplink >>> module. Now almost every day in peak time I see sudden fall of throughput >>> on >>> 10GE interface. Peak load is about 4G. At the moment outbound traffic >>> falls >>> to 3G and users notice upload speed downgrade. The only method I found to >>> resolve the problem - reboot the switch. Nothing unusual is configured on >>> switch, no QoS also. I've no idea how to troubleshoot the problem?May be >>> you >>> can point me to some worthful troubleshooting guides? >>> _______________________________________________ >>> juniper-nsp mailing list [email protected] >>> https://puck.nether.net/mailman/listinfo/juniper-nsp >>> >>> >> > 2009/8/4 Alex <[email protected]> > >> Michael, >> Is the throughput impaired only during peak times? Does throughput improve >> after peak hours? > > Traffic goes down in offpeak time to 1G. Difference between inbound and > outbound traffic cannot be seen. The next day peak time the situation > repeats - outbound traffic reaches a limit and does not go upper. Reboot > resolves the situation. > >> Are there any drops/errors on this interface? > > On both sides there are no errors and drops. I check them by "show > interfaces xe-0/1/0 extensive" command. > >> >> Is uplink sending you (perhaps too many) PAUSE frames? > > Uplink is connected to catalyst 6500: > c6500-BGW-XL#sh int te3/6 | i flow > input flow-control is on, output flow-control is off > So as I see uplink shouldn't send pause frames. > On ex4200: > > show interfaces xe-0/1/0 | match Flow > Source filtering: Disabled, Flow control: Enabled > May be I should try to disable flow control on juniper interface? > >> >> Rgds >> Alex >> >> ----- Original Message ----- From: "Michael" <[email protected]> >> To: <[email protected]> >> Sent: Tuesday, August 04, 2009 5:47 PM >> Subject: [j-nsp] ex4200 throughput trouble on 10GE interface >> >> >> Hi all, >>> Recentle I've installed first ex4200 to my core network with 10GE uplink >>> module. Now almost every day in peak time I see sudden fall of throughput >>> on >>> 10GE interface. Peak load is about 4G. At the moment outbound traffic >>> falls >>> to 3G and users notice upload speed downgrade. The only method I found to >>> resolve the problem - reboot the switch. Nothing unusual is configured on >>> switch, no QoS also. I've no idea how to troubleshoot the problem?May be >>> you >>> can point me to some worthful troubleshooting guides? >>> _______________________________________________ >>> juniper-nsp mailing list [email protected] >>> https://puck.nether.net/mailman/listinfo/juniper-nsp >>> >>> >> > -- С уважением, Щедрин Михаил Начальник отдела ТП2 SkyNet Telecom http://sknt.ru тел. +7 911 934-79-83 _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
