[nsp] WS-G5486 and WS-G5487

[Brian]

What about WS-G5486 connecting to a 1000SX Compaq interface over  
multi-mode.  Should there be any
issues with that?  I have used 5486's to trunk switches, but recently  
tried to connect a host to one (compaq 1000SX
module), and I cannot get it to come up.  i am thinking of swaping out  
the 5486 for a 5484, but wanted to find out if
this *should* work.

Brian


On Thursday, June 5, 2003, at 10:43 PM, Clinton Work wrote:

>
> It should work because both the LX and ZX GBICs have wide band  
> receivers (eg 1200 - 1600 nm),
> but you need to carefully check receive levels at installation time.  
> The transit power
> of the 1000Base-ZX is strong (+5db) and if used on a short run you
> can saturate the 1000Base-LX receiver (-3db to -19db).
>
> Site A (1000Base-ZX)  <---- dark fiber ----> Site B (1000Base-LX)
>
> Checks:
> a) The receive light level at Site B will need to be checked by a  
> 1550nm light meter.
> b) The receive light levle at Site A will need to be checked by a  
> 1310nm light meter.
>
> I would recommend at least a 3db operational tolerance from either the  
> maximum or minimum
> receive level for the GBIC. You can get troublesome links if the light  
> level is too hot
> or too weak.
>
> You can find the GBIC specs on the following Cisco webpage:
> http://www.cisco.com/en/US/products/hw/modules/ps872/ 
> products_data_sheet09186a008014cb5e.html
>
> Cisco has some documentation on computing power budgets for SONET  
> links, but the same
> calculation applies to optical GBICs as well.
> http://www.cisco.com/en/US/tech/tk713/tk607/ 
> technologies_tech_note09186a00801492ce.shtml
>
> On Fri, Jun 06, 2003 at 11:07:57AM +0800, Tay Chee Yong wrote:
>> Hi all,
>>
>> Just like to find out if A-end is using a WS-G5486 (1000Base-LX) and  
>> B-end is
>> using a WS-G5487 (1000Base-ZX), will there be any performance issues,  
>> such as
>> latency or packet drops when there is high traffic flow across the  
>> link.
>>
>> Regards,
>> Cheeyong
>
> -- 
> ======================================================================= 
> ==
> Clinton Work                                        clinton at scripty.com
> Calgary, Alberta
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