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Any TELEBAHN nodes online at the moment?
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Hi, I finally have my VAX and my Sun all wired and hooked up to Telebahn - They should be reachable at 230.002.00 and 230.003.00 respectively.? I could connect from the outside using xotpad, but I have not yet been able to reach anything else through xot.? Are any of your machines up at this point? Thanks, Hans |
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I'm not seeing any inbound packets on my port 1998 (XoT) when I run `pad 471041` from the Sun or (if I got this right) `set host/x29 471041` on VMS. They both just time out with: $ set host/x29 471041 %PAD-E-CLR_DTE, call cleared by remote DTE -PAD-I-CAUSEDIAG, cause code 00, diagnostic code 00 > pad 471041 SunLink X.25 PAD V6.0. Type ^P<cr> for Executive, ^Pb for break Calling... connection refused: 00 00: Connection refused From 471.041 itself, I get: Cisco1760-top#pad 23000200 Trying 23000200... % Connection refused by remote host Jun ?5 11:59:17.806: X.25 host name sent for DNS lookup is "" Jun ?5 11:59:17.862: DNS got X.25 host mapping for "" via network Jun ?5 11:59:17.934: [62.156.10.103,1998/,11540]: XOT O P2 Call (22) 128 lci 1 Jun ?5 11:59:17.934: ? From (6): 471041 To (8): 23000200 Jun ?5 11:59:17.934: ? Facilities: (6) Jun ?5 11:59:17.934: ? ? Packet sizes: 1024 1024 Jun ?5 11:59:17.938: ? ? Window sizes: 15 15 Jun ?5 11:59:17.938: ? Call User Data (4): 0x01000000 (pad) Jun ?5 11:59:18.002: [62.156.10.103,1998/,11540]: XOT I P2 Clear (5) 128 lci 1 Jun ?5 11:59:18.002: ? Cause 3, Diag 66 (Invalid facility request/Facility parameter not allowed) Jun ?5 11:59:18.006: [62.156.10.103,1998/,11540]: XOT O P7 Clear Confirm (3) 128 lci 1 I have the TELEBAHN profile + the "x25 subscribe {window,packet}size..." from earlier. (Yes I finally settled on an address prefix for long enough that it got put in DNS...) On Mon, Jun 5, 2023 at 2:08?PM Hans Hübner <hans.huebner@...> wrote:
-- Mantas Mikul?nas |
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Hi Mantas, thank you for trying this out.? The issue was an incorrect name server entry on the cisco.? I've fixed that, and now I can establish outbound connections as well.? Nice!? :) One issue still puzzles me:? When I use the pad on the cisco with any non-local address, I get connected to my Sun.? This is kind of minor, still would be nice to see fixed.? Any ideas? ! version 12.1 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname ! logging rate-limit console 10 except errors enable secret 5 $1$ARw/$HyvEhZULktN8tKEGq6Fjt1 ! ip subnet-zero no ip routing ! ! no ip finger ip domain-name ip name-server 192.168.23.1 ! x25 routing ! ! ! interface Ethernet0/0 ?ip address 192.168.23.2 255.255.255.0 ?no ip route-cache ?no ip mroute-cache ?half-duplex ?no cdp enable ! interface Serial0/0 ?description Sun SPARCstation IPX ?no ip address ?encapsulation x25 dce ?no ip route-cache ?no ip mroute-cache ?x25 address 23000100 ?clockrate 9600 ?no cdp enable ! interface BRI0/0 ?no ip address ?no ip route-cache ?no ip mroute-cache ?shutdown ?no cdp enable ! interface Serial0/1 ?description VAX 4000-105A EUGENE:: ?no ip address ?encapsulation x25 dce ?no ip route-cache ?no ip mroute-cache ?x25 address 23000100 ?clockrate 9600 ?no cdp enable ! ip default-gateway 192.168.23.1 ip classless no ip http server ! logging facility local4 logging source-interface Ethernet0/0 logging 192.168.178.11 no cdp run x25 route ^230003.. interface Serial0/0 x25 route ^230002.. interface Serial0/1 x25 route ^(...)(...) xot dns \2.\ ! line con 0 ?transport input none line aux 0 line vty 0 4 ?password cisco ?login ! no scheduler allocate end Am Mo., 5. Juni 2023 um 14:05?Uhr schrieb Mantas Mikul?nas <grawity@...>:
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As far as I understand, if you call an address that doesn't match any explicit 'x25 route', IOS will by default route it through either Se0/0 or "the first X.25-capable interface" (I am not sure which). That is, Serial0/0 is your implicit "default route" on IOS. I *think* you can add an explicit reject at the end of your routing table using: ? ? x25 route .* clear I haven't tested this yet. On Mon, Jun 5, 2023, 16:08 Hans Hübner <hans.huebner@...> wrote:
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Am Mo., 5. Juni 2023 um 15:53?Uhr schrieb Mantas Mikul?nas <grawity@...>:
It works, thanks! -Hans version 12.1 no service single-slot-reload-enable service pad to-xot service pad from-xot service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname ! logging rate-limit console 10 except errors enable secret 5 $1$ARw/$HyvEhZULktN8tKEGq6Fjt1 ! ip subnet-zero no ip routing ! ! no ip finger ip domain-name ip name-server 192.168.23.1 ! x25 routing ! ! ! interface Ethernet0/0 ?ip address 192.168.23.2 255.255.255.0 ?no ip route-cache ?no ip mroute-cache ?half-duplex ?no cdp enable ! interface Serial0/0 ?description Sun SPARCstation IPX ?no ip address ?encapsulation x25 dce ?no ip route-cache ?no ip mroute-cache ?x25 address 23000100 ?clockrate 9600 ?no cdp enable ! interface BRI0/0 ?no ip address ?no ip route-cache ?no ip mroute-cache ?shutdown ?no cdp enable ! interface Serial0/1 ?description VAX 4000-105A EUGENE:: ?no ip address ?encapsulation x25 dce ?no ip route-cache ?no ip mroute-cache ?x25 address 23000100 ?clockrate 9600 ?no cdp enable ! ip default-gateway 192.168.23.1 ip classless no ip http server ! logging facility local4 logging source-interface Ethernet0/0 logging 192.168.178.11 no cdp run x25 route ^230003.. interface Serial0/0 x25 route ^230002.. interface Serial0/1 x25 route ^(...)(...) xot dns \2.\ x25 route .* clear x25 host address 23000100 ! line con 0 ?transport input none line aux 0 line vty 0 4 ?password cisco ?login ! no scheduler allocate end |
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Looks like the Cisco at 23000100 does not accept direct calls via XOT (it forwards calls to other 230x hosts but you can't call 23000100 itself). I'm guessing because it doesn't know its own X121 address – there's neither an "x25 profile" for XOT, nor a static "x25 host" for the router itself, nor any X25 records in DNS. > x25 host address 23000100 this should say "x25 host 23000100" (i.e. with the router's own <hostname>), it's like the localhost entry in /etc/hosts. (Alternatively give it an X25 record in DNS alongside the IPv4 A record.) It's also how you make your "source" NUA visible to the calling system when making PAD calls from IOS – either define it on the outbound interface (which is the "x25 profile" when the outbound is XOT) or as a host entry for the cisco's own hostname. I *think* I figured out calls into Sun/VAX from my side, it seems the Sun system doesn't negotiate windowsize and only looks at the defaults (which the TELEBAHN profile defines as 'win 15' / 'wout 15'), and refuses anything larger than 7. Though I still haven't figured out how to manually tell VMS what terminal type I'm using (since X29 does not send $TERM over to the remote host), so it thinks I'm on a dumb tty. That doesn't play well with `phone` at all (and even more so at 9600 bps, I suppose), it kept scrolling to "refresh the screen" at a rate of ... 3 seconds per character, or so. I guess it's in `set terminal` somewhere. (I thought I'd screen-record it, but gnome-shell crashed while it was still scrolling halfway through your sentence so I missed the rest of it. Sorry) On Mon, Jun 5, 2023 at 5:05?PM Hans Hübner <hans.huebner@...> wrote:
-- Mantas Mikul?nas |
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