Cisco reverse telnet connection to com port OpenVMS

[geir_2]

Hello,

I try to configure a console connection from cisco 2511 to the com port on OpenVMS. But it doesn't work.

I hope that someone could help me.
Thanks!


Regards geir

[Mobeen_1]

Geir,
It would help if you could post the port characteritics here ?

regards
Mobeen

[geir_2]

Hi,
Thanks for the answer.

The line/port configuration on 2511 is:


line 1 16
no exec
exec-timeout 0 0
transport input all
telnet break-on-ip
telnet sync-on-break
telnet ip-on-break
flowcontrol hardware


The port configuration on OpenVMS is:

I'm not sure how I could find the com port characteristic on the VMS system. But I know that we earlier we used a LAT/DECserver to connect to the OpenVMS consol port. Now we want to replace the DECserver with a Cisco 2511 router.

[Florian Heigl (new acc)]

hmmm - at first, Your question is in the wrong forum, but I have no idea how You can move it ;)

second, Your IOS config looks okay to me, I compared it to the one at http://www.fatkid.com/html/reverse_telnet_config.html

- con0 is active, I hope? (no shut)
- Did You check the cabling and pinouts?
I never had a OpenVMS system, but maybe a plain rollover-cable does not do the trick?

[Jan van den Ende]

Geir,

I posted a Move Request for this thread in the Forums Issues thread, so I expect it to be moved soon.

So, even though you are not there yet, let me WELCOME you to the VMS FORUM!!!

I have no definitive answers by head, but tomorrow at work I will look them up, and if noone else beats me to it, I will post our settings.

Proost.

Have one on me.

Jan

[Mobeen_1]

Geir,
Please see the following, these are the port charecteristics for the connections we have for OpenVMS systems
Character Size: 8
Flow Control: None
Parity: None
Stop Bits: Dynamic


Access: Remote
Backwards Switch: None
Break: Disabled
Default Protocol: LAT

Preferred Service:


Authorized Groups: 0
(Current) Groups: 0

Input Speed: 9600
Output Speed: 9600
Signal Control: Disabled

Local Switch: None
Name: APLUS_x
Session Limit: 4
Enabled Characteristics:
Broadcast, Loss Notification, Message Codes, Remote Modification

regards
Mobeen

[geir_2]

hi,
Thanks for the e-mail. I'm not so familiar
with OpenVms these days(I worked with it for 20-years ago.) Could you please give me the
the commands on VMS, so I could check/control the port settings.

rgds geir

PS;
Is it a rolled over cable(console cable), with normal db9 adapter I can use between the VMS and Cisco access router?

[Anton van Ruitenbeek]

Geir,

One: You never forget how to work with VMS, its like riding a bike. There are no dialects etc.

Two: The command should be SET HOST/DTE TTA0 or TTA1 depending where the console port of the Cisco is connected to.
Please don't forget to use the correct cable. The bleu Cisco cable should be alright. If you don't got a RS232 9-pins TTA0/TTA1 connection, you got a problem using the Cisco cable because this one has a 9 pins connector.
In this case a Digital H8585-AA rev A should used with a cat5 cable. For this last one I hope I don't mistake about the pinning.
If you are in SET HOST/DTE you can change the setting using the ^@ etc.

AvR

[geir_2]

hi,

thanks for the answers. The problem is not the config on the Cisco access router. The problem is either

1) wrong type consoll cable.
Normally its rollover. I'm not sure, but I think it will be the same on VMS. I have tried all type - straight through, rollover and crossed over cable.
2) Wrong type adapter on VMS com port. I tried the same type adpapter that's included in the cisco package, but it doesn't work as expected.
3) Some config on the VMS system. It was no problem with the com port on VMS, when we used the terminalserver(LAT.

thanks for the answers:

regards geir

[Jeffery D. Urmann]

Could you post the pinout specs for the Cisco 2511 com port?

What OpenVMS com port are you refering to? I assume it is on the back of an Alpha or VAX. Is the port an DECConnect, DB9 or DB25?

Most console type connections only require two signals (tx, rcv) plus ground. As I recall, pins 2 and 3 for DB type connectors are transmit (tx) and receive (rcv). I do not know of the top of my head which is which, but, if you have a break-out box, you could figure out. In any case, tx from the VMS system should go to rcv on the Cisco, and rcv from the VMS system should go to the tx on the Cisco. gnd-gnd of course.

Enjoy,

--Jeff

[Doug Phillips]

geir,

I'm not clear what you're trying to do:

1. Log into the OpenVMS system's console through a port on the Cisco 2511? Then whether it's LAT or TELNET doesn't make any difference. It's a serial connection.

2. Log in to the cisco's console from the OpenVMS system? You wouldn't want to use the computer's console port for this, but one of the other serial ports instead. Again, LAT or TELNET doesn't make any difference. It makes a difference if you're using the network to log in, but then the cable doesn't make any difference (unless you're talking about the network cable rather than the console cable).

If you tell us what kind of computer you have (VAX model#, Alpha model#), maybe someone can tell you about the ports and cables. Different systems have different ports and connectors.

The connection between the computer's port and the cisco port is serial and the baud rate, parity, flow control and so forth need to match. Since the computer's port was connected serially to the LAT DECserver's port, then you need to set the cisco's port to match that. Where was it plugged in before and what kind of cable did it have?

The cable is probably a "null-modem" cable.

Doug

[Martin P.J. Zinser]

Hi Geir,

depending on what you want to do (e.g. configuring the system for a console manager application), the following settings on the
Cisco might be worth to experiment with

terminal-type vt220
stopbits 1
flowcontrol software

Keep us posted on your progress!

Greetings, Martin

[geir_2]

Hi,

Thanks for all answers. Here is the the solutions on my problem.

1)
The config on the cisco router is normal. 8-bit, none parity, 1 stopbits, speed 9600 and none flowcontrol
2) DB9 adapter marked terminal on the VMS com port
3)Rollover console cable

Thats all. Hope it could help someone in the future.

Thanks again for the answer

Geir

[Ian Miller.]

Geir,
to thank the people who have helped you see
http://forums1.itrc.hp.com/service/forums/helptips.do?#33