[j-nsp] ex4200 throughput trouble on 10GE interface

Mircho Mirchev mircho at gmail.com
Wed Sep 30 13:06:37 EDT 2009

Hi Michael,
We ran into a very similar issue with EX-series. The performance drops
drastically and no errors or suspicious counters are increasing.
This happens only in live environment and, no matter how I try, I can't
reproduce it in lab.
We have several switches with similar setup and only one makes the problem.
Tried changing the hardware - no difference. The only clue the that the
problematic switch has ae- (LAG w/ LACP) interface.

Please, share your experience with this problem. Did you find any solution?
Do you know if 9.3 is having this issue?
Any help and clues will be helpful.

Best Regards,

Dipl. eng. Mircho Mirchev

On Thu, Aug 6, 2009 at 10:16 AM, Michael Schedrin <mschedrin at gmail.com>
> I had issue with bootp helper. It had stopped forwarding packets at the
> moment. Also only reboot resolved the problem.
> 2009/8/5 Chuck Anderson <cra at wpi.edu>
>> On Wed, Aug 05, 2009 at 11:00:31AM +0200, Malte von dem Hagen wrote:
>> > Hi,
>> >
>> > Michael schrieb:
>> > > I use 9.5R2.7. Very interesting information about 9.3. Where did you
>> hear
>> > > about it?
>> >
>> > we ran into several severe bugs on our EX switches, regarding different
>> > functions (aggregated ethernet, virtual chassis, spanning tree etc.
>> and
>> > got that recommendation from our Juniper SE. That statement is some
>> weeks/months
>> > old though, so I can't say if the situation changed.
>> Interesting.  I've been using aggregated ethernet and virtual chassis
>> on 9.5R2.7 without major issues since May.  Also dhcp-snooping, ARP
>> inspection, IP Source Guard, and secure-access-port allowed-mac.  One
>> minor issue I had was failure to save/restore the persistent
>> dhcp-binding-table on reboot.
>> _______________________________________________
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> --
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> Щедрин Михаил
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