North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: too many routes
> > On Wed, 10 Sep 1997, Joseph T. Klein wrote: > > > > > The routes issue historically comes down to the fact that Sprint did not > > > want to convert from Cisco 4000 to Ciscos that had larger memory capacity. > > > Memory is cheap these days ... the big boys just don't wish to have a > > > free market. > > > > I do not think sprint had 4000s in their backbone, they had AGS+ routers. > > The problem is not the lack of memory, but that the CPU can not process > > all the date in the memory when it needs to. The cisco 7500 have that > > same prob, sure you can put 256 megs of RAM in them, but can the CPU > > recalculate the next hop if most of that date in that RAM changes? > > The new RSP4 card may have solved that, we may be at a point now where the > > router has enough processor to be able to process all the data it has > > stored in memory and do it quickly. > > AGS+'s only could handle 16meg, the cpu in a AGS+ is the same as in a 7000 > series, (motorola 68040) As of a year ago, I believe I heard that sprint > still had AGS+'s in their backbone and were upgrading them to 7000 series > equipment. > > -- Jason > Jason Vanick ------------------------------------------ [email protected] > Network Operations Manager V: 312-245-9015 > MegsInet, Inc. 225 West Ohio St. Suite #400 Chicago, Il 60610 In 1992 Sprintlink had AGS+ routers in it's network, so did everyone else. The AGS+'es where replaced by 7000's with 64M and SSE's and then 'downgraded' to 75xx routers with 128M. The current Sprintlink core is a mix of 75xx routers with 128M and VIP2/80-POS oc3c interfaces and cisco 12000 routers with 256M and oc3c and oc12c. -Peter
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