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CIPA, a Packet-Driver for Common-ISDN-API 2.0
Herbert Hanewinkel, Sept 1995
CIPA (= Common Isdn PAcket-driver) is an ethernet-type (class=1)
packet-driver for IP-Routing or remote Ethernet bridging over
ISDN. CIPA communicates with the ISDN card using the Common-ISDN-
API 2.0 specification (an international standard for accessing
ISDN cards). Because of this, CIPA is completely hardware
independent and has successfully been tested with many active and
passive ISDN cards.
CIPA supports a large set of protocols for communication with
other vendors ISDN routers or servers. Among these protocols are:
LAPB, Frame-Relay, PPP, SLIP, Cisco-HDLC.
CIPA's protocol suite has successfully been tested with a wide
range of commercial, shareware and public domain TCP/IP packages
e.g. Ftp PCTCP, Sun PC-NFS, Novell LanWorkPlace and PDTEHER,
WATTCP based IP programs, NCSA & CU -Telnet/ftp, UMN gopher &
popmail Trumpet WINSOCK, XFS.
CIPA can communicate at least with the following commercial
systems:
Ascend Routers, AVM MPR 3.0, Biodata ISDN Router, Cisco
Routers, Conet S2M Router, INS/CLS Banzai ISDN Router, netCS
ISDN Router, RzK SLIP Bridge, SGI Indy ISDN 1.0, Spyder
Routers, SunLink ISDN 1.0, SunLink ISDN 1.0.2.
CIPA is a MS-DOS TSR program for use with TSR or VxD CAPI 1.1
implementations. CIPA was written for use with ISDN BRI PC cards.
CIPA was developed and implemented on a NCP /P8 card from NCP
engineering GmbH, Nuernberg..
The current version of CIPA supports two independent active
connections at a time. Alternativly a connection can use both B-
channels for loadsharing. CIPA can be loaded more than once, if
more than two simultaneous connections to different sites are
desired. Loadsharing can be configured as static or dynamic
(bandwidth on demand). Dynamic loadsharing can be used
concurrently with a second independent connection.
Loadsharing over two channels is implemented using simple round
robin scheduling, because TCP/IP doesn't require the original
packet sequence. This is completely hardware independent and
supported by many router systems.
The latest version of CIPA is available on ftp.biochem.mpg.de in
directory /pc/isdn.