Crazy Buddhist
07-31-2007, 01:37 AM
To my surprise Peter Lothberg the Internet Genius who delivered a 40G interconnection to his mother, and whose "requirements" Cisco bear in mind when designing routers, has replied to my email about it with some details for us:
Peter Lothberg to me
show details 05:59 (16 minutes ago)
> Hi,
Hi!
> Im trying to contact the Peter Lothberg who set up this fabulously fast
> internet service for his Mum in sweden. Would you be the right guy?
Yes..
> If not sorry for troubling you - If yes, I wonder if you would be so kind as
> to clarify a couple of points that have come under discussion recently about
> this matter:
>
> Is it really 40 Gbit/s or 4.7 Gbit/s? - we have seen both reported.
It is 39.813120 Gbit/s It's OC768 with POS (cisco HDLC) encoding.
RP/0/RP0/CPU0:HFR1-F#sh int pos 0/2/0/0
POS0/2/0/0 is up, line protocol is up
Interface state transitions: 10
Hardware is Packet over SONET/SDH
Internet address is 192.108.195.249/30
MTU 4474 bytes, BW 39813120 Kbit
reliability 255/255, txload 0/255, rxload 0/255
Encapsulation HDLC, crc 32, controller loopback not set, keepalive
set (10 sec)
Last clearing of "show interface" counters 10:34:22
--
Optics Status
Optics Type: DWDM
Wavelength Band: C-Band, MSA ITU Channel = 57, Frequency =
193.30 THz, Wavelength = 1550.918 nm
TX Power = -4.83 dBm
RX Power = -12.55 dBm
RX LOS Threshold = -15.00 dBm
> Does your mum now enjoy the same upload speed or is that more restricted?
It is 40G to the house, the PC itself has a 10GE interface and we
benchamrked the PC at some 8Gbit/s.
The limitation is usally the server on the other end.
> Could/would you give us a very brief description of the technology concept?
Mother lives 410Km out in the boonies, so It's a sigle optical shot
on a wavelengt from the garagae to a router at a major IP pop/HUB in
Stockholm. Do traceroute to 192.108.195.250.
> To be clear I intend to use anything you proivide in a public internet forum
> about Computer modifications - we're all very interested in this, but I am
> obviously not asking for or expecting the full specs of how this was
> achieved.
This is all of the shelf stuff, all router stuff and optics are
cisco CRS1.
I would like to se people build computers to the upcoming 100Gig
Ethernet standard.
So .. there you have it ... she really does have a 40G internet connextion ... but the PC can only handle 8G looooooooooooooooooooooooooooooooooooooooooool :D:D:D:D:D
Still gobsmacked the "third most important man in optical networking" replied to my email ;)
Peter Lothberg to me
show details 05:59 (16 minutes ago)
> Hi,
Hi!
> Im trying to contact the Peter Lothberg who set up this fabulously fast
> internet service for his Mum in sweden. Would you be the right guy?
Yes..
> If not sorry for troubling you - If yes, I wonder if you would be so kind as
> to clarify a couple of points that have come under discussion recently about
> this matter:
>
> Is it really 40 Gbit/s or 4.7 Gbit/s? - we have seen both reported.
It is 39.813120 Gbit/s It's OC768 with POS (cisco HDLC) encoding.
RP/0/RP0/CPU0:HFR1-F#sh int pos 0/2/0/0
POS0/2/0/0 is up, line protocol is up
Interface state transitions: 10
Hardware is Packet over SONET/SDH
Internet address is 192.108.195.249/30
MTU 4474 bytes, BW 39813120 Kbit
reliability 255/255, txload 0/255, rxload 0/255
Encapsulation HDLC, crc 32, controller loopback not set, keepalive
set (10 sec)
Last clearing of "show interface" counters 10:34:22
--
Optics Status
Optics Type: DWDM
Wavelength Band: C-Band, MSA ITU Channel = 57, Frequency =
193.30 THz, Wavelength = 1550.918 nm
TX Power = -4.83 dBm
RX Power = -12.55 dBm
RX LOS Threshold = -15.00 dBm
> Does your mum now enjoy the same upload speed or is that more restricted?
It is 40G to the house, the PC itself has a 10GE interface and we
benchamrked the PC at some 8Gbit/s.
The limitation is usally the server on the other end.
> Could/would you give us a very brief description of the technology concept?
Mother lives 410Km out in the boonies, so It's a sigle optical shot
on a wavelengt from the garagae to a router at a major IP pop/HUB in
Stockholm. Do traceroute to 192.108.195.250.
> To be clear I intend to use anything you proivide in a public internet forum
> about Computer modifications - we're all very interested in this, but I am
> obviously not asking for or expecting the full specs of how this was
> achieved.
This is all of the shelf stuff, all router stuff and optics are
cisco CRS1.
I would like to se people build computers to the upcoming 100Gig
Ethernet standard.
So .. there you have it ... she really does have a 40G internet connextion ... but the PC can only handle 8G looooooooooooooooooooooooooooooooooooooooooool :D:D:D:D:D
Still gobsmacked the "third most important man in optical networking" replied to my email ;)