[11969] in Commercialization & Privatization of the Internet
Re: X.25 with Internet?
daemon@ATHENA.MIT.EDU (Karl Denninger)
Tue Apr 26 12:32:27 1994
From: karl@mcs.com (Karl Denninger)
To: NORDLUND@ccstaff.cc.ukans.edu (Dave Nordlund)
Date: Tue, 26 Apr 1994 00:26:30 -0500 (CDT)
Cc: com-priv@psi.com
In-Reply-To: <1A678400BF@ccstaff.cc.ukans.edu> from "Dave Nordlund" at Apr 25, 94 12:09:03 pm
> |I have a meeting on Monday with someone who says they are mixing frame
> |relay with Internet connectivity. Can anyone with experience with such a
> |mixture, or lack-of-mixability possibly tell me some good or horror
> |stories about this? My own past uses of X.25 were inconsistant with
> |reasonable ftp, gopher, www and similar services, let alone ANY prospects
> |of experimental services that are coming.
> |
> | Thanks.
> | Bruce Gingery
> |
> |
> For the KANsas Research and Education Network (KANREN) is using almost all
> Frame relay connections. We have one large router in each LATA with a T1
> FR link to the SW Bell switch. Each site (we are just now installing) will
> start out with a 56 Kb FR link. A PVC will make the connection to the
> LATA router.
This is pretty much how you set it up, yes :-)
> BTW, The state of Arkansas is also using Frame Relay for their state
> network and it IS up and working.
>
> I don't consider Frame Relay and IP a "mixture". Frame Relay is just the
> new form of X.25 packet networking. cisco, among others, has Frame Relay
> support in their routers. Frame Relay just forms the network layer like
> HDLC, X.25, PPP or other technologies.
>
> Dave Nordlund nordlund@ccstaff.cc.ukans.edu
Frame Relay is a perfectly appropriate way to connect IP WANs <provided>
you understand completely the CIRs of the link(s) and the implications of
having a CIR which is smaller than the frame rate (ie: a 16kbps CIR on a
56kbps line).
In some cases the obvious behavior that you would expect (ie: queuing packets
until bandwidth is available) does <not> take place.
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