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ping is not working.

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Deepak Raheja
Frequent Advisor

ping is not working.

Sir,

I have a pair (EA1DS1 & EA1DS2) of Alpha server DS10 working on Open VMS 7.2-1 platform at remote site. One is running as master server and other serves as standby. I am able to ping/telnet master server EA1DS1,while I am unable to ping the standby server EA1DS2,however I am able to telnet or set host on same server.moreover I am able to ping through Windows machines.

Is it a route add problem,if so then how I am able to ping the other server while I have added the whole network route add in servers.

Could anyone help me to find the parameter responsible for making a system ping in VMS platform with decent protocol.

Regards,
Deepak Raheja
24 REPLIES
Robert Gezelter
Honored Contributor

Re: ping is not working.

Deepak,

Further information is needed.

I presume that the original post meant "DECnet" (not "decent") protocol?

There is no direct analog to PING in the DECnet protocol stack. One can use any number of ways to see if a second node is present.

An IP (actually, UDP over IP) PING can be blocked by settings at the host or by routing/firewall rules at an intermediate node. Details of the network topology are needed to troubleshoot this question.

What does "ping through Windows machines mean"? Where are the Windows systems? How are they connected?

- Bob Gezelter, http://www.rlgsc.com
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Hello Robert,
I am not able to ping by
TCPIP> ping (host name)command from One VMS machine Alpha DS10 (where Open VMS Ver 7.2-1 is installed).My UCX version is 5.0A (Quite an old one.There are several VMS machines that are in LAN.I am able to do a SET HOST (Host name).
The Brit
Honored Contributor

Re: ping is not working.

Deepak,
Is your host name being resolved? Try

TCPIP> TCPIP PING XXX.XXX.XXX.XXX

i.e. use the IP address.

Dave.
Steven Schweda
Honored Contributor

Re: ping is not working.

> I am not able to ping [...]

"I am not able" is not a useful problem
description. As usual, showing actual
commands with their actual output can be more
helpful than vague descriptions and
interpretations. You might start with this
one:

tcpip show version

> Is it a route add problem, [...]

My psychic powers are too weak to tell me how
your systems are configured.

tcpip show route

> [...] with decent protocol.

What's an indecent protocol?
Robert Gezelter
Honored Contributor
Solution

Re: ping is not working.

Deepak,

PING can fail for many reasons, including (including as has been noted in some earlier posts):

- name resolution issues
- firewall rules
- routing rules
- ICMP being disabled on the remote node

First, as has already been suggested, does PING work if the numeric address of the remote machine? Also, does PING 127.0.0.1 on the remote machine work (127.0.0.1 is the IP loopback address; often given an alias name of "localhost").

- Bob Gezelter, http://www.rlgsc.com
Joseph Huber_1
Honored Contributor

Re: ping is not working.

>>There are several VMS machines that are in LAN.I am able to do a SET HOST (Host name).

And this proves the interface to LAN IS working, and the ping problem has some reasons other than the ethernet interface, as others have mentioned.

So You can go on and replant the interface in the remote system.

On the other hand, if SET HOST means DECNET: did You reconfigure DECNET to use the new interface (EWC0) instead of the old EWA0 ?
If so, then You proved nothing!
http://www.mpp.mpg.de/~huber
Andy Bustamante
Honored Contributor

Re: ping is not working.

Please provide the output of

$ mcr lancp show dev /char
$ tcpip show version
$ tcpip show config interface
$ tcpip ifconfig -a
$ tcpip show interface /cluster
$ tcpip show route

on both systems you've referenced.

Master/Standby: Are these systems in a cluster? Do you have an alias address that's expected to migrate between the nodes?

>>> What's an indecent protocol?
a movie starring Robert Redford and Demi Moore if memory serves

If you don't have time to do it right, when will you have time to do it over? Reach me at first_name + "." + last_name at sysmanager net
Joseph Huber_1
Honored Contributor

Re: ping is not working.

>>If so, then You proved nothing!
Read:
If NOT so, then You proved nothing!
http://www.mpp.mpg.de/~huber
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Hello Andy,
As per you asked the output of followings
$ mcr lancp show dev /char
$ tcpip show version
$ tcpip show config interface
$ tcpip ifconfig -a
$ tcpip show interface /cluster
$ tcpip show route

Please find the attached reply.

By mistake I wrote in 1st thread,decent in place of DECnet.

Hello Joseph,
I think you are considering this the old problem we discussed,this ping problem is not related to earlier one we talked(New LAN card adding . . .)

Regards,
Deepak Raheja
Steven Schweda
Honored Contributor

Re: ping is not working.

> Please find the attached reply.

JPEG's? Excel spreadsheets? You couldn't
simply copy+paste the plain text?
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Hello Steven,

I will consider your valuable advice in future.

Pls have a look on the attached file to get some solution .

Thanks in advance


Deepak Raheja
Andy Bustamante
Honored Contributor

Re: ping is not working.

Deepak Raheja,

The proxy server at my location won't allow a zip file to be downloaded. A cut and paste to a plain text would be readable.

I see that you've posted the Magic Bunny on the thread. That indicates you've worked out a solution, is this correct?

If you don't have time to do it right, when will you have time to do it over? Reach me at first_name + "." + last_name at sysmanager net
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Hello Andy,
As per you told I have cut/copy the asked query by you,in a text file .Please have a look on the attached file.

(EA1DS1 is the name of one VMS server and EA1DS2 is the name of the another one VMS servers and they are in LAN.)

Regards,
Deepak Raheja
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Hello Andy,

Please find here the attached file of our Network connectivity in .pdf format.

Regards,
Deepak Raheja
labadie_1
Honored Contributor

Re: ping is not working.

I had posted a Decnet ping which is available at

http://www.decuslib.com/DECUS/vmslt02a/vu/decnet-ping-com.txt
The Brit
Honored Contributor

Re: ping is not working.

Deepak,
Once again,

Can you ping the machine using the IP address??

This is an important question since;

If the answer is NO, then you have a network topology/routing problem.

If the answer is yes, then you may have a DNS problem.

Dave
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Hello Dave,

My remote VMS server(EA1DS2) is not able to ping from either name or by IP from other remote server.But it is pinging by its local LAN server.

All the routes in server both sides are same as before problem occurred.


Regards,
Deepak Raheja
The Brit
Honored Contributor

Re: ping is not working.

OK,
If I understand you correctly,

1. Within Remote Site 1, EA1DS1 and EA1DS2 can ping each other.

2. EA0DS1 & EA0DS2 (both Local) can ping EA1DS1 (Remote1).

3. EA0DS1 & EA0DS2 (both Local) can NOT ping EA1DS2 (Remote1).

Is this correct. (If not, please respond with the correct details about who can ping who, using the same hostnames than you used in your PDF.)

Additional Question: Can EB0DS1/EB0DS2 and EC0DS1/EC0DS2 ping the local servers (EA0DS1/EA0DS2) and/or the Remote1 servers (EA1DS1/EA1/DS2)??

Dave.
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Yes Dave,
1. Within Remote Site 1, EA1DS1 and EA1DS2 can ping each other.

yes for all point 3.
I wish to add 1 more point that from Local Windows machines( EA0FE1 & EA0FE2)I am able to ping Remote EA1DS2.But from VMS machines I am not able to do so.

Similarly EB0DS1/2 is not able to ping EA1DS2,but able to ping EA1DS1

On other hand EC0DS1/2 is able to ping bothe EA1DS1/2.

While in ideal case all machines should ping with each other.because all are connected with each other.Route add should not be a matter as per my opinon because i add whole network route.

Regards,
Deepak Raheja
The Brit
Honored Contributor

Re: ping is not working.

Ok. I just saw the notes at the bottom of your text attachments.

Now it seems (combining all of your comments) that the only problem is pinging OUTBOUND from EA1DS2. Is this correct???

Does EA1DS2 have a default route set??

TCPIP SHOW ROUTE /DEFAULT

have you tried moving the EA1DS2 connection to a different port on the Switch?

Ping is (I think) ICMP traffic, so it is possible there is some kind of block stopping EA1DS2 from pinging out.

When you try to ping, what response do you actually get (cut and paste would be useful)

Dave.
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Hello Dave,

Now it seems (combining all of your comments) that the only problem is pinging OUTBOUND from EA1DS2. Is this correct???

>>>Yes,

Does EA1DS2 have a default route set??

TCPIP SHOW ROUTE /DEFAULT

Type Destination Gateway
DN 0.0.0.0 172.16.129.134

have you tried moving the EA1DS2 connection to a different port on the Switch?

>>>No ,because already EA1DS2 is pinging from EC0DS1/2 and EA0FE1/2

Ping is (I think) ICMP traffic, so it is possible there is some kind of block stopping EA1DS2 from pinging out.

When you try to ping, what response do you actually get (cut and paste would be useful)

>>>ucx ping ea1ds2
PING ea1ds2 (172.16.129.130): 56 data bytes

Cont+C
100 packets transmitted,0 packet received, 100% packet loss
%SYSTEM-F-TIMEOUT,device timeout

hope to see from your side

Regards,
Deepak Raheja


Dennis Handly
Acclaimed Contributor

Re: ping is not working.

>Andy: The proxy server at my location won't allow a zip file to be downloaded.

There is a known forum problem with IE and .zip files. Use this URL instead:
http://forums.itrc.hp.com/service/forums/getattachment.do?attachmentId=362948&ext=.ZIP
Deepak Raheja
Frequent Advisor

Re: ping is not working.

Hello Andy,

I am able to download the content of my attachment from this link.

Deepak
Steven Schweda
Honored Contributor

Re: ping is not working.

I'm lost.

> EA1DS1, EA1DS2 , EA0DS1 etc. all machines
> are defined in host table.

Defined how? These systems have multiple
interfaces, don't they? It may be _called_ a
"hosts" table, but _interfaces_ have
addresses, not hosts. (If a host has only
one interface, then you can talk about that
host's address, but it's really the address
of an interface.)

Unless I'm missing something, I still know
nothing about system EA0DS1 (IP addresses,
routes, ...).

> (EA1DS1 is the name of one VMS server and
> EA1DS2 is the name of the another one VMS
> servers and they are in LAN.)

If they are in the same LAN, then why don't
they have the same routes?

> c) Ping does not happen [...]

Ping _what_ does not happen?

> [...] As usual, showing actual
> commands with their actual output can be more
> helpful than vague descriptions and
> interpretations.

Still true.