Serial networking scenarios with Cisco-Routers - Revision history

PoC: /* Scenario 3a: IP over X.25 */ Corrected copy-paste error

2026-02-02T01:15:44Z

Scenario 3a: IP over X.25: Corrected copy-paste error

← Older revision		Revision as of 03:15, 2 February 2026
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	Only parameters to be changed are mentioned.		Only parameters to be changed are mentioned.
	interface Serial0		interface Serial0
	ip address 192.168.59.245 255.255.255.252		ip address 192.168.1.245 255.255.255.252
	x25 pvc 2 ip 192.168.59.246		x25 pvc 2 ip 192.168.1.246

	=== Configuration: OS/400 (Fiona) ===		=== Configuration: OS/400 (Fiona) ===

PoC: /* Scenario 3: Remote SNA APPN connection over X.25 and DLSw */ Corrected config

2026-02-02T01:12:19Z

Scenario 3: Remote SNA APPN connection over X.25 and DLSw: Corrected config

← Older revision		Revision as of 03:12, 2 February 2026
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	* Con: More complicated to configure, possibly not applicable to other machinery than just AS/400's		* Con: More complicated to configure, possibly not applicable to other machinery than just AS/400's

	The main differences for the Cisco configuration is the establishment of ''~~Data Link Switching~~'' ~~(DLSw)~~, because of this, only configuration differences are pointed out.		The main differences for the Cisco configuration is the establishment of ''X.25'', because of this, only configuration differences are pointed out.

	=== Configuration: Cisco IOS (1601-R) ===		=== Configuration: Cisco IOS (1601-R) ===

PoC: /* Notes */ More precise

2026-02-02T01:07:03Z

Notes: More precise

← Older revision		Revision as of 03:07, 2 February 2026
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	* <code>sdlc simultaneous full-datmode</code> corresponds (most likely<ref>There are also ''half-duplex'' and ''full-duplex'' commands to configure an interface which aren't used here.</ref>) to the line description's ''DUPLEX(*FULL)''.		* <code>sdlc simultaneous full-datmode</code> corresponds (most likely<ref>There are also ''half-duplex'' and ''full-duplex'' commands to configure an interface which aren't used here.</ref>) to the line description's ''DUPLEX(*FULL)''.
	* The <code>source-bridge</code> statement in the physical Token Ring interface assigns the attached ring the number 59, designates it to the source bridge number 1, and bridges traffic to the virtual ring (group) number 512.		* The <code>source-bridge</code> statement in the physical Token Ring interface assigns the attached ring the number 59, designates it to the source bridge number 1, and bridges traffic to the virtual ring (group) number 512.
	* Because auto configuration is enabled, the device ~~description~~ for Fiona system will be created automatically at the first successful connection attempt to Nibbler.		* Because auto configuration is enabled, the controller- and device descriptions for Fiona system will be created automatically at the first successful connection attempt to Nibbler.

	Unclear:		Unclear:

PoC: /* Physical Layer Requirements */ Typo

2026-02-02T00:57:28Z

Physical Layer Requirements: Typo

← Older revision		Revision as of 02:57, 2 February 2026
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	On the physical layer, some kind of serial connection is required. In earlier times, AS/400's often had an external modem, providing remote diagnostics capabilities through ''ECS'' (Electronic Customer Support), connected to a serial port. For the sake of simplicity, the AS/400 in question is assumed to already have a serial port, RS-232 style.		On the physical layer, some kind of serial connection is required. In earlier times, AS/400's often had an external modem, providing remote diagnostics capabilities through ''ECS'' (Electronic Customer Support), connected to a serial port. For the sake of simplicity, the AS/400 in question is assumed to already have a serial port, RS-232 style.

	<blockquote>'''Note:'''\|DE-9 or DB-25 connectors directly screwed to the chassis are meant for diagnostics and UPS connection. These are '''not''' normal serial ports!</blockquote>		<blockquote>'''Note:''' DE-9 or DB-25 connectors directly screwed to the chassis are meant for diagnostics and UPS connection. These are '''not''' normal serial ports!</blockquote>

	Matching IBM V.24 Modem Cables for your particular hardware can be sourced e. g. through shops on the internet.		Matching IBM V.24 Modem Cables for your particular hardware can be sourced e. g. through shops on the internet.

PoC: Wording

2026-02-02T00:56:18Z

Wording

← Older revision		Revision as of 02:56, 2 February 2026
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	* SDLC as transport protocol for SNA,		* SDLC as transport protocol for SNA,
	* X.25 as transport protocol for higher-level protocols (SNA, IP),		* X.25 as transport protocol for higher-level protocols (SNA, IP),
	* Data Link Switching Plus (''DLSw+'') for transport of SNA over IP based links,		* Data Link Switching Plus (DLSw+) for transport of SNA over IP based links,
	* Local or remote media conversion between LANs and SDLC or QLLC (X.25).		* Local or remote media conversion between LANs and SDLC or QLLC (X.25).

	This article does intentionally not cover SNASw, a reduced SNA "routing" stack within Cisco IOS. Depending on use case, it has proven to be awfully slow, may crash routers in some scenarios, and may be of limited use because it's configuration is fixed as a Branch Extender (BEX) node.		This article does intentionally not cover SNASw, a reduced SNA "routing" stack within Cisco IOS. Depending on use case, it has proven to be awfully slow, may even crash routers in some scenarios, and may be of limited use because it's configuration is fixed as a Branch Extender (BEX) node.

	For clarity, the scenarios mentioned later always refer to two machines:		For clarity, the scenarios mentioned later always refer to two machines:

PoC: /* Scenario 3: Remote SNA APPN connection over X.25 and DLSw */ win/wout vs. lind

2025-11-13T12:44:54Z

Scenario 3: Remote SNA APPN connection over X.25 and DLSw: win/wout vs. lind

← Older revision		Revision as of 14:44, 13 November 2025
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	=== Configuration: OS/400 (Fiona) ===		=== Configuration: OS/400 (Fiona) ===
	crtlinx25 lind(x25line) rsrcname(lin011) lglchle((001 pvc)) netadr(00000000000000) cnninit(local) interface(*rs232v24) linespeed(19200) dftpktsize(1024) modulus(128) linkspeed(64000) cmnrcylmt(10 1)		crtlinx25 lind(x25line) rsrcname(lin011) lglchle((001 pvc)) netadr(00000000000000) cnninit(local) interface(*rs232v24) linespeed(19200) dftpktsize(1024) modulus(128) dftwdwsize(8) linkspeed(64000) cmnrcylmt(10 1)

	crtctlappc ctld(nibbler) linktype(x25) line(x25line) maxframe(1024) rmtcpname(nibbler) exchid(05641700) netlvl(1984) lglchlid(006) nodetype(calc) tmsgrpnbr(calc) autodltdev(no) cmnrcylmt(10 1)		crtctlappc ctld(nibbler) linktype(x25) line(x25line) maxframe(1024) rmtcpname(nibbler) exchid(05641700) netlvl(1984) lglchlid(006) nodetype(calc) tmsgrpnbr(calc) autodltdev(no) cmnrcylmt(10 1)

PoC: +link

2025-11-13T11:36:41Z

+link

← Older revision		Revision as of 13:36, 13 November 2025
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	* [[Configuring X.25 link through Cisco IP network]]		* [[Configuring X.25 link through Cisco IP network]]
	* [[Configuring TCP/IP and SLIP with Cisco-Router and V3R2]]		* [[Configuring TCP/IP and SLIP with Cisco-Router and V3R2]]
			* [[Start TCP/IP at IPL]]

	== Weblinks ==		== Weblinks ==

PoC: More fixes

2025-11-13T10:21:17Z

More fixes

← Older revision		Revision as of 12:21, 13 November 2025
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	=== Configuration: OS/400 (Fiona) ===		=== Configuration: OS/400 (Fiona) ===
	crtlinx25 lind(x25line) rsrcname(lin011) lglchle((001 pvc)) netadr(00000000000000) cnninit(~~remote~~) interface(*rs232v24) linespeed(19200) dftpktsize(1024) modulus(128) linkspeed(64000) cmnrcylmt(10 1)		crtlinx25 lind(x25line) rsrcname(lin011) lglchle((001 pvc)) netadr(00000000000000) cnninit(local) interface(*rs232v24) linespeed(19200) dftpktsize(1024) modulus(128) linkspeed(64000) cmnrcylmt(10 1)

	crtctlappc ctld(nibbler) linktype(x25) line(x25line) maxframe(1024) rmtcpname(nibbler) exchid(05641700) netlvl(1984) lglchlid(006) nodetype(calc) tmsgrpnbr(calc) autodltdev(no) cmnrcylmt(10 1)		crtctlappc ctld(nibbler) linktype(x25) line(x25line) maxframe(1024) rmtcpname(nibbler) exchid(05641700) netlvl(1984) lglchlid(006) nodetype(calc) tmsgrpnbr(calc) autodltdev(no) cmnrcylmt(10 1)
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	=== Configuration: OS/400 (Fiona) ===		=== Configuration: OS/400 (Fiona) ===
			First, you need to add another virtual circuit to the line description. You can't do that remotely, because you must vary off the line.
			vrycfg cfgobj(x25lin011) cfgtype(lin) status(off)
			chglinx25 lind(x25line) lglchle((001 pvc) (002 pvc))
			vrycfg cfgobj(x25lin011) cfgtype(lin) status(on)

			Then you can add the according TCP/IP interface configuration.
	addtcpifc intnetadr('192.168.1.246') lind(x25line) subnetmask('255.255.255.252') mtu(1024) pvclglchli(002)		addtcpifc intnetadr('192.168.1.246') lind(x25line) subnetmask('255.255.255.252') mtu(1024) pvclglchli(002)
	addtcprte rtedest(dftroute) subnetmask(none) nexthop('192.168.1.245') mtu(1024)		addtcprte rtedest(dftroute) subnetmask(none) nexthop('192.168.1.245') mtu(1024)
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	=== Configuration corrections ===		=== Configuration corrections ===
	How to establish routing within your local LAN for the example subnet being described above is not within the scope of this article.		How to establish routing within your local LAN for the example subnet being described above is not within the scope of this article.

			Also, issue <code>go cfgtcp</code>, and check/correct configurations, such as DNS information, services to be started at IPL time, etc.

	== See also ==		== See also ==

PoC: /* Configuration corrections */ Consistent naming

2025-11-13T09:12:05Z

Configuration corrections: Consistent naming

← Older revision		Revision as of 11:12, 13 November 2025
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	vrycfg cfgobj(fiona) cfgtype(ctl) status(off)		vrycfg cfgobj(fiona) cfgtype(ctl) status(off)
	* Change configuration to match parameters:		* Change configuration to match parameters:
	chgctlappc ctld(~~sdlcas~~) maxframe(1033) inlcnn(ans) nodetype(calc) autodltdev(no) cmnrcylmt(10 1) ctlown(user)		chgctlappc ctld(fiona) maxframe(1033) inlcnn(ans) nodetype(calc) autodltdev(no) cmnrcylmt(10 1) ctlown(user)
	* I suggest to run <code>wrkctld</code> and manually set <code>swtdsc</code> (press F11) to ''*no''. Otherwise, you'll get a log of unneeded messages about torn down connections. It depends on the OS release if this option shows up.		* I suggest to run <code>wrkctld</code> and manually set <code>swtdsc</code> (press F11) to ''*no''. Otherwise, you'll get a log of unneeded messages about torn down connections. It depends on the OS release if this option shows up.
	* Vary on configuration objects on both AS/400, starting with Nibbler.		* Vary on configuration objects on both AS/400, starting with Nibbler.
	vrycfg cfgobj(~~sdlcas~~) cfgtype(ctl) status(on)		vrycfg cfgobj(fiona) cfgtype(ctl) status(on)
	vrycfg cfgobj(sdlclin) cfgtype(lin) status(on)		vrycfg cfgobj(sdlclin) cfgtype(lin) status(on)

PoC: /* Configuration: OS/400 (Fiona) */ fix typos

2025-11-13T09:04:37Z

Configuration: OS/400 (Fiona): fix typos

← Older revision		Revision as of 11:04, 13 November 2025
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	=== Configuration: OS/400 (Fiona) ===		=== Configuration: OS/400 (Fiona) ===
	crtlinx25 lind(x25line) rsrcname(lin011) lglchle((001 pvc)) netadr(00000000000000) cnninit(remote) interface(*rs232v24) linespeed(19200) dftpktsize(1024) modulus(128~~) netctl(nibbler~~) linkspeed(64000) cmnrcylmt(1 10)		crtlinx25 lind(x25line) rsrcname(lin011) lglchle((001 pvc)) netadr(00000000000000) cnninit(remote) interface(*rs232v24) linespeed(19200) dftpktsize(1024) modulus(128) linkspeed(64000) cmnrcylmt(10 1)

	crtctlappc ctld(nibbler) linktype(x25) line(x25line) maxframe(1024) rmtcpname(nibbler) exchid(05641700) netlvl(1984) lglchlid(006) nodetype(calc) tmsgrpnbr(calc) autodltdev(no) ~~cnnrcylmt~~(10 1)		crtctlappc ctld(nibbler) linktype(x25) line(x25line) maxframe(1024) rmtcpname(nibbler) exchid(05641700) netlvl(1984) lglchlid(006) nodetype(calc) tmsgrpnbr(calc) autodltdev(no) cmnrcylmt(10 1)

	=== Notes ===		=== Notes ===