[Info-vax] tcpip gateway question

[Anton Shterenlikht]

On Tue, Sep 08, 2009 at 11:36:48AM +0000, John Santos wrote:
> In article <mailman.10.1252405909.17612.info-vax_rbnsn.com at rbnsn.com>, 
> mexas at bristol.ac.uk says...> 
> > I've a VMS cluster on a local 10.10.10.0/24 network.
> > 
> > I'm trying to set up one of the VMS nodes
> > to also sit on the University network 137.222.0.0/16.
> > 
> > So I used tcpip$config and configured the two interfaces as:
> > 
> >    1  -  WE0 Menu (EWA0: TwistedPair 100mbps)
> >    2  -  137.222.187.238/16  mech-cluster238       Configured,Active          
> > 
> >    3  -  WE1 Menu (EWB0: TwistedPair 100mbps)
> >    4  -  10.10.10.1/24       vav                   Configured,Active          
> >  
> > 
> > I added the default University gateway, 137.222.187.250, and
> > name servers 137.222.10.36 and 137.222.10.39 with tcpip$config
> > options
> >                  3  -  Routing               
> >                  4  -  BIND Resolver         
> > 
> > I've ssh server and client enabled on this node.
> > 
> > My problem is that I cannot even ping the gateway.
> > 
> > Does this look reasonable:
> > 
> > $ tcpip show route
> >   
> >                              DYNAMIC
> >   
> > Type           Destination                           Gateway
> >   
> > AN    0.0.0.0                               137.222.187.250
> > AN    10.10.10.0/24                         10.10.10.1
> > AH    10.10.10.1                            10.10.10.1
> > AH    127.0.0.1                             127.0.0.1
> > AN    137.222.0.0/16                        137.222.187.238
> > AH    137.222.187.238                       137.222.187.238
> > $ 
> >  
> > 
> > many thanks for any advice or a link to a relevant manual.
> 
> Your net mask is almost certainly wrong.  No one has a class B on an
> ethernet segment anymore!  My guess is you can't see the name servers
> because your VMS system is trying to send directly to them and it
> needs to go through your router.
> 
> Can you ping the router (137.222.187.250) by address?  If not,
> your LAN might be subnetted to smaller than a /24 and you should
> have a local router to get to the rest of it.  But most likely,
> your netmask should be 255.255.255.0 (/24).  Ask your network
> people...

John, thank you.

Yes, the netmask should be /24, I just confirmed this with my
networks administrator. I changed the configuration, but the
result is still the same.

I'm not sure I understand this properly, but is it allowed
or advisable to set different gateways for different nodes
in a VMS cluster? I think, that's what I'm trying to do. 

Perhaps in a setup with common cluster environment tcpip
setting are supposed to be the same for all nodes? I'm not
sure if the gateway settings are stored under sys$common
or under sys$specific. But on the other hand,
TCPIP SHOW ROUTE show that different nodes have different
routers.

I probably sound terribly confused, sorry about that.

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 331 5924