[GTER] Socorro! 3.1Mpps UDP len 34-46 matando Juniper/MX5-T-DC

Diogo Montagner diogo.montagner at gmail.com
Sat Nov 22 22:38:59 -02 2014


Outro commando que mostra as filas em direção à RE:

show system queues

{master}
admin at BNG-960-F> show system queues | match int
output interface            bytes          max  packets      max    drops
arpintrq                        0            0     3000        0        0
spppintrq                       0            0    25000        0        0
tnpintrq                        0            0  1250000        0        0
tagintrq                        0            0   200000        0        0

{master}
admin at BNG-960-F>

./diogo -montagner
JNCIE-SP 0x41A

2014-11-23 8:35 GMT+08:00 Diogo Montagner <diogo.montagner at gmail.com>:

> Outro processo para monitor é:
>
>  12 root        1 -20 -139     0K    16K WAIT    20:30  0.00% swi7: clock
> sio
>
> ./diogo -montagner
> JNCIE-SP 0x41A
>
> 2014-11-23 8:35 GMT+08:00 Diogo Montagner <diogo.montagner at gmail.com>:
>
>> show system processes
>>
>> procure por algo semelhante a isto:
>>
>>    19 root        1 -68 -187     0K    16K WAIT   188:41  0.15% irq11:
>> em0 em1 em2* <<< irá mostar alta utilizacao
>>
>> verifique se a arp storm não está vindo pela interface fxp.
>>
>>
>>
>> ./diogo -montagner
>> JNCIE-SP 0x41A
>>
>> 2014-11-23 8:10 GMT+08:00 Rubens Kuhl <rubensk at gmail.com>:
>>
>>> 2014-11-22 21:57 GMT-02:00 Diogo Montagner <diogo.montagner at gmail.com>:
>>>
>>> > Se o problema é CPU e o interrupt está alto, você pode estar sofrendo
>>> de um
>>> > ataque de arp em alguma interface.
>>> >
>>> > Procure por arp storm.
>>> >
>>> > Talvez show ddos-protection protocols violations irá mostrar algo.
>>> >
>>>
>>> E de comandos de PFE, quais dariam uma luz nisto ?
>>>
>>> show pfe statistics traffic
>>>
>>> Ou algo como
>>> show interfaces ge-5/0 |match index:
>>> (ver o index)
>>>
>>> request pfe execute target tfeb0 command "show jnh ifd xxx stream" ?
>>>
>>>
>>>
>>> Rubens
>>> --
>>> gter list    https://eng.registro.br/mailman/listinfo/gter
>>>
>>
>>
>



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