>Heh, for only about $240,000 list you too can own a 1 port oc-192 POS card >for a 124xx series GSR that will do not only PPP and HDLC over sonet, but >also frame relay encapsulation... > >Seriously though, we aren't ready for 10Gig yet, but when the time comes I'm >considering using 10 Gig E between our core routers instead. I'm not sure >how serious I am about that, but the line cards will be less than half the >cost. Anyone other SPs out there considering that? > >Mike
I definitely know of service providers planning for it, although some of it may be wavelength switching rather than pure packet switching (see the Generalized MPLS work in the IETF). We definitely had OC-192 customers when I was at Nortel, and that OC-192 was being fed as multiple streams using DWDM. PPP and HDLC may be getting long in the tooth, as well as SONET, as IEEE starts to standardize the Spatial Reuse Protocol. A number of companies have OC-768 in development, but apparently going faster than that is going to require some major advances in solid state physics. On the other hand, they are getting more and more OC-192's multiplexed onto a fiber, and there are ultra-long-reach fiber systems that can run around 4000 kilometers between repeaters. > > -----Original Message----- > From: Mike Mandulak [mailto:[EMAIL PROTECTED]] > Sent: Tue 3/12/2002 5:14 PM > To: [EMAIL PROTECTED] > Cc: > Subject: Re: VLoFR and atm popularity [7:38003] > > > > Out of curiosity, what hardware/protocol do you use for an OC-192? > > ----- Original Message ----- > From: "Mike Bernico" > To: > Sent: Tuesday, March 12, 2002 5:28 PM > Subject: RE: VLoFR and atm popularity [7:38003] > > > > I work for a large ISP. As far as I'm concerned there is >no such thing >as > a > > high speed ATM link. In the cisco carrier class ATM world oc-12 is as >fast > > as you go. Unless of course you use the mgx 8850, the >biggest piece of > junk > > ever painted blue and stamped with a bridge. ATM is still >a great way to > do > > statistical multiplexing, a great revenue stream for >carriers and popular > > among the "connect all the sites in my enterprise together with DS3s > > crowd." ATM circuit emulation is darn handy for legacy >video. It's days > > are numbered in larger networks. It's all but extinct in the > OC-12 > > networks, but it's going to be around for a while for >smaller networks. > > > > > > Mike > > ------------------- > > Mike Bernico [EMAIL PROTECTED] > > Illinois Century Network http://www.illinois.net > > (217) 557-6555 > > > > > > > -----Original Message----- > > > From: Larry Letterman [mailto:[EMAIL PROTECTED]] > > > Sent: Tuesday, March 12, 2002 3:00 PM > > > To: [EMAIL PROTECTED] > > > Subject: RE: VLoFR and atm popularity [7:38003] > > > > > > > > > quite possibly because the big telecom providers > > > connect most of their pops/CO's with high speed > > > atm links... > > > > > > > > > Larry Letterman > > > Cisco Systems > > > [EMAIL PROTECTED] > > > > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED]]On Behalf Of > > > Patrick Ramsey > > > Sent: Tuesday, March 12, 2002 12:25 PM > > > To: [EMAIL PROTECTED] > > > Subject: VLoFR and atm popularity [7:38003] > > > > > > > > > Cisco support vlan tagging over frame circuits? > > > > > > I was looking at a Tierra networks router and it was listed > > > as one of it > > > +'s. > > > > > > Does Cisco even support this? This kinda creeps up even > > > further on the +'s > > > of atm and how long atm is going to survive. > > > > > > Other than being capable of joining elans at oen fac. from > > > another, can > > > anyone even think of why atm still exists? With wdm and >all the newer > > > technology coming around the corner, why is atm still so > > > saught after for > > > long distance links? > > > > > > -Patrick -- "What Problem are you trying to solve?" ***send Cisco questions to the list, so all can benefit -- not directly to me*** ******************************************************************************** Howard C. Berkowitz [EMAIL PROTECTED] Chief Technology Officer, GettLab/Gett Communications http://www.gettlabs.com Technical Director, CertificationZone.com http://www.certificationzone.com "retired" Certified Cisco Systems Instructor (CID) #93005 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38149&t=38003 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
