[c-nsp] SPAN for POS?

[Hank Nussbacher]

On Tue, 13 May 2008, jason.plank at comcast.net wrote:

> Or:
>
> http://datacomsystemsinc.com/products/details.asp?prod=32&itm=1&cat=5
>
> Forget about the vendor, but the idea of "taps" are that you sit inline and observe traffic on your link.

Been there.  Done that.  Didn't like it since any changes in the "tap" 
(port move, additional mirror added), just caused too much down time.

-Hank

>
> Jason
>
> --
> Regards,
>
> Jason Plank
> CCIE #16560
> e: jason.plank at comcast.net
>
> -------------- Original message ----------------------
> From: Michael Smith <mksmith at adhost.com>
>> Hello Hank:
>>
>> On May 13, 2008, at 6:30 AM, Hank Nussbacher wrote:
>>
>>> We recently upgraded our connectivity from GigaE to an STM-16 POS.
>>> We now
>>> find that SPAN doesn't cover POS links:
>>> petach-tikva-gp(config)#monitor session 1 source interface ?
>>>   GigabitEthernet     GigabitEthernet IEEE 802.3z
>>>   Port-channel        Ethernet Channel of interfaces
>>>   TenGigabitEthernet  Ten Gigabit Ethernet
>>>
>>> Any clever workarounds for 12.2(18)SXF11?
>>>
>> I don't think there is a workaround because SPAN doesn't do POS
>> interfaces.  Can you SPAN from a different ethernet port on the back
>> end (distribution instead of aggregate)?  Also, what type of
>> information are you trying to get from the POS interface?  Perhaps
>> there is something similar you can poll via SNMP.
>>
>> Regards,
>>
>> Mike
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>