Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!mit-eddie!bloom-beacon!eru!hagbard!sunic!mcsun!hp4nl!nikhefh!a20 From: a20@nikhefh.nikhef.nl (Marten Terpstra) Newsgroups: comp.protocols.tcp-ip Subject: Re: IP over X.25 Keywords: IP routers, x25, cisco Message-ID: <1010@nikhefh.nikhef.nl> Date: 5 Oct 90 09:55:24 GMT References: Sender: terpstra@nikhef.nl (Marten Terpstra) Reply-To: terpstra@nikhef.nl (Marten Terpstra) Organization: Nikhef-H, Amsterdam (the Netherlands). Lines: 31 In article Denis.Russell@newcastle.ac.uk writes: [stuf deleted] >this query. The primary focus is to find out whether routers >that support X.25 as an IP bearer have the right sort of >characteristic for such an application. For example, one would >require support for a substantial number of such calls (10, 20, >30?), and the automatic clearing down of calls after some >inactivity timeout. What speed X.25 is supported (preferably >well beyond 64kbps)? Does a router exploit already existing >inbound X.25 calls to send outbound datagrams or does traffic >always result in two calls, one used in each direction? What >other questions are important? CISCO IP routers can provide you with everything you want. The max speed for normal serial interfaces in these boxes is T1 (or 1.544 Mbit/s). You can of course get higher speed interfaces. The set-up and clearing of calls can simply be done by specifying an idle timer. Only one call is needed for two way traffic. It will set up a call if it has traffic to route. CISCO even provides x25 switching if you want this. Ask CISCO for some info or drop a line at customer-support@cisco.com. Marten -- Marten Terpstra National Institute for Nuclear Internet : terpstra@nikhef.nl and High Energy Physics Oldie-net: {....}mcsun!nikhefh!terpstra (NIKHEF-H), PO Box 41882, 1009 DB Phone : +31 20 592 5102 Amsterdam, The Netherlands