nanog mailing list archives
Re: value of co-location
From: Stephen Stuart <stuart () pa dec com>
Date: Mon, 22 Jan 96 22:39:46 -0800
PS. Also does someone have numbers for the amount of buffering in a DEC gigaswitch, and information on their buffer managment (i.e. variable length buffers vs fixed length buffers).
The Gigaswitch SCP card has (at last count) 16MB of DRAM for buffering packets (and other stuff) that get forwarded by the crossbar. The FGL cards (FDDI line cards) have 1MB of DRAM. There's a Digital Technical journal article available on-line that describes the Gigaswitch in detail. The URL is http://www.digital.com/info/hpc/sc95/sygiga-dtj.html Buffer management is discussed in the "Design Issues" section: http://www.digital.com/.i/info/hpc/sc95/sygiga-dtj-design.html Module details (like types and quantities of memory) are listed in the (hm) "Module Details" section: http://www.digital.com/.i/info/hpc/sc95/sygiga-dtj-module.html We have a Gigaswitch/FDDI at the Palo Alto interconnect, if you'd like to have a look at one. Stephen - ----- Stephen Stuart stuart () pa dec com Network Systems Laboratory Digital Equipment Corporation
Current thread:
- Re: value of co-location, (continued)
- Re: value of co-location Andrew Partan (Jan 20)
- Re: value of co-location Warren K. Williams (Jan 20)
- Re: value of co-location Paul Ferguson (Jan 20)
- Re: value of co-location Dave Siegel (Jan 20)
- Re: value of co-location Nathan Stratton (Jan 20)
- Re: value of co-location Kent W. England (Jan 20)
- Re: value of co-location Hans-Werner Braun (Jan 20)
- Re: value of co-location Mike O'Dell (Jan 21)
- Re: value of co-location Joseph Lawrence (Jan 22)
- Re: value of co-location Bilal Chinoy (Jan 22)
- Re: value of co-location Stephen Stuart (Jan 22)
- Re: value of co-location Dennis Ferguson (Jan 21)
- Re: value of co-location Hans-Werner Braun (Jan 21)
- Re: value of co-location Dennis Ferguson (Jan 21)
- Re: value of co-location Fletcher Kittredge (Jan 22)
- Re: value of co-location Paul A Vixie (Jan 21)
- Re: value of co-location Paul A Vixie (Jan 22)
- Re: value of co-location Alan Hannan (Jan 22)