Hello,
Did somebody try to have LW XENPAK working in 10Gig Ethernet PIC. I am asking
this question generally because LW is not mentioned in the PIC specification
http://www.juniper.net/techpubs/hardware/m-series/m320/m320-pic/10-gigabit-ethernet-pic-with-xenpak-m320-router.html#ten-ge-xenpak
Thank you in advance
Best regards,
Ruslan
Richard A Steenbergen wrote:
On Thu, Sep 13, 2007 at 02:59:34AM -0700, Benny Sumitro wrote:
Hi List,
Is there any differences between 10GE interface using XFP and XENPAK in
Juniper?
Besides the obvious differences of size/form factor and fiber connectors,
XENPAK and XFP are very different technologies on the backend.
The biggest difference for the end user is that on XENPAK the framer is
located on the optic itself, which essentially makes that optic "hard
coded" for a particular media and framing. XFP implements the framer on
the host board, making the optic itself media agnostic (not to mention
cheaper to produce). You can take the same XFP and use it for 10GE LAN
PHY, 10GE WAN PHY, OC192, even 10G fibre channel. Generally speaking this
means that any vendor producing anything less than an extremely low-end
device can easily implement LAN/WAN PHY framing on the board, and control
it via a simple software switch. I can only speak to the 10G XFP cards on
the MX960 specifically, but they implement LAN/WAN PHY support about as
well as you could possibly hope for (with full SONET alarms when in WAN
PHY mode). With XENPAK, you have to change out the entire optic, and you
usually end up paying a huge premium for "LW" optics (and good luck even
trying to FIND EW).
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