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decnet plus not working after new network card

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TMcB
Super Advisor

decnet plus not working after new network card

Hi everyone

I've replace the network card on our alphaserver ds20. Decnet Plus no longer working.


The card is still seen as we0 (ewa0).
But when I run mc ncl show node it sees the old mac address.
How can I change it to see the new mac address

> mc ncl show node ruby1
Node RUBY1
at 2007-05-01-12:01:04.811+01:00Iinf
Identifiers
Name = LOCAL:.RUBY1
Address =
{
(
[ DNA_CMIP-MICE ] ,
[ DNA_SessionControlV3, number = 19 ] ,
[ DNA_OSItransportV1 , 'DEC0'H ] ,
[ DNA_OSInetwork , 49::00-01:AA-00-04-00-3D-07:21 (LOCAL:.RUBY1) ]
) ,
(
[ DNA_CMIP-MICE ] ,
[ DNA_SessionControlV2 , number = 19 ] ,
[ DNA_OSItransportV1 , 'DEC0'H ] ,
[ DNA_IP , 0.0.0.0 ]
) ,
(
[ DNA_CMIP-MICE ] ,
[ DNA_SessionControlV3 , number = 19 ] ,
[ DNA_NSP ] ,
[ DNA_OSInetwork , 49::00-01:AA-00-04-00-3D-07:20 (LOCAL:.RUBY1) ]

This mac address is the one which belonged to the old card.
Can anyone point me in the right direction of how to get it to see the new mac address.

Much appreciated.
11 REPLIES
Ian Miller.
Honored Contributor

Re: decnet plus not working after new network card

The MAC address AA-00-04-00-3D-07 is generated from your DECnet address and is independent of the hardware. This is why you are seeing the same MAC address.

What is not working?
____________________
Purely Personal Opinion
TMcB
Super Advisor

Re: decnet plus not working after new network card

Hi Ian

The card which has mac address AA-00-04-00-3D-07 is no loinger physically in the server.
The new card had mac address 00-06-2b-01-F0-8B.

Why is decnet still seeing the old mac address when this is no longer there

Thanks
Volker Halle
Honored Contributor

Re: decnet plus not working after new network card

Hi,

when DECnet Phase IV protocol is being started on a LAN interface, the MAC address of the interface card is changed to the DECnet MAC address (AA-00-04-00-xx-xx). xx-xx are calculated from the DECnet address of the local node.

You can view the Hardware MAC Address with:

$ MC LANCP SHOW DEV/CHAR EWA0

It's shown as Hardware LAN Adress.

What doesn't work with DECnet ? Are there any errors on the LAN interface, how about bytes received/send counters ?

$ MC LANCP SHOW DEV/COUNT EWA
or
$ MC NCL SHOW CSMA_CD STATION csmacd-0 ALL COUNT

$ MC LANCP SHO DEV/INTERNAL

will show the messages issued by the LAN driver during startup or re-configuration.

Volker.
TMcB
Super Advisor

Re: decnet plus not working after new network card

Hi

The counters / errors all look ok (0).

When I try to set host now I am getting -
RUBY1> set host alf0
%SYSTEM-F-UNREACHABLE, remote node is not currently reachable


Volker Halle
Honored Contributor

Re: decnet plus not working after new network card

Do you run other protocols on that LAN interface (e.g. TCPIP) ? Do they work ?

Are the CSMA-CD station and ROUTING CIRCUIT in state ON ?

Can you do SET HOST RUBY1 from node ALF0 ?

Volker.
TMcB
Super Advisor

Re: decnet plus not working after new network card

Hi Volker

I cannot set host from alf0 :
ALF0> set host ruby1
%SYSTEM-F-UNREACHABLE, remote node is not currently reachable

But I've just realised that from ruby1 I can set host to other machines so decnet must be working, just not to alf0.

I tried deleting the node using decnet-register and ran the flush command, but still cannot get to it

Thanks
Duncan Morris
Honored Contributor

Re: decnet plus not working after new network card

Hi,

it looks as though DECnet is operating fine on RUBY1, but not on node ALF.

The change of NIC on RUBY1 is probably unrelated to the issue with ALF0, so concentrate on looking at ALF0.

Regards,

Duncan
TMcB
Super Advisor

Re: decnet plus not working after new network card

Hi Duncan

I'll do that now - I am unable to set host to ruby1 from any server.

I also noticed that ib ruby1 if I do set host 0, I get :
RUBY1> set host 0
Failure on the back translate address request

Username:


Thanks
Duncan Morris
Honored Contributor

Re: decnet plus not working after new network card

Hi,

which node did you delete using decnet_register?

Are you using DECdns for the directory service as well as LOCAL, or just LOCAL?

On a node which used to be able to reach RUBY1, you should still have the LOCAL address info, so try running DECNET_REGISTER on that node and get it to display the info for RUBY1. Compare the result with the same info on RUBY1 itself!

Duncan

Heinz W Genhart
Honored Contributor
Solution

Re: decnet plus not working after new network card

Hi TMcB

If I look at the DECnet Tower in the output of mc ncl sho node ruby1, I can see that You configured to run DECnet over TCPIP.

(
[ DNA_CMIP-MICE ] ,
[ DNA_SessionControlV2 , number = 19 ] ,
[ DNA_OSItransportV1 , 'DEC0'H ] ,
[ DNA_IP , 0.0.0.0 ]
) ,

Could it be possible that the another Node is only reachable with Decnet over IP? Then you should start the PWIP Driver which is not started (otherwise you would see another address in the tower than 0.0.0.0)

Regards

Geni
TMcB
Super Advisor

Re: decnet plus not working after new network card

Hi everyone

I decided to reboot ruby1, and when it came up again everything is working OK.

Although glad its now working, it is quite annoying as now I'm not sure what resolved the issue.

Thanks you all so much for replying - you have been a great help

Bye