INT Portserver restart Procedures

There are two Portservers (made by Digi Corporation) built into white racks with 8 RJ45 connections (Ethernet UTP) on the front. There is one located on the telescope at cass (marked Cassegrain Terminal Server) and the other is located in the clip centre (marked Clip Centre Terminal Server).

If either Portserver gets powered off or otherwise stops responding, the demon linking lpss12 to it will need to be restarted. If this is not done, the TCS server (and other connections to instruments and CCDCs) will not start up. Symptoms will be that communications will not start eg a server may appear to lock up while attempting to attach to the port. The Portserver may not even respond to a ping command.

To confirm a problem try from any unix prompt (logged in as observer) type tip d16 you should see the message connected and be able to see the characters you type. Exit tip with carriage return ~. This tests portserver1 located in the clip centre.

Repeat the above with tip /dev/term/b016 which tests portserver2 (on cass).

To recover

• do a complete reboot and power off of lpss12 - see this procedure.

or

• You need root access for this:
1. Log into lpss12 as root
2. execute: ps -aef | grep ncxd
3. kill the demons, using the process numbers from the above
4. Restart the demons using the command line returned from the ps above, ie:

/etc/ncxd -d /dev/dgii_netsup0 -i 161.72.6.136 -p 771 &

/etc/ncxd -d /dev/dgii_netsup1 -i 161.72.6.137 -p 771 &

5. log out

The portservers are:

• 161.72.6.136 portserver1 # located in the clip centre INT
• 161.72.6.137 portserver2 # located at INT cass
• 161.72.6.138 portserver3 # spare unit, currently clip centre see EJM

A demon is a type of device driver in unix, it stays in memory all the time.

INT home page | Roger Edwards | Software Controls Systems Group | Isaac Newton Group
Page created by Roger Edwards rje@ing.iac.es on 13/02/97.