The hipersocket network requires a different subnet than on either of
the two vswitch networks. When you want to communicate over the
hipersocket network connect to the IP address of the other host on the
hipersocket network, not the IP address used for OSA connectivity. The
VSE in the 2nd level VM and the SLES9 host should each have an interface
configured on the hipersocket network with an IP address from the subnet
assigned to the hipersocket network. No special routing command will be
needed for this to work. Both hosts, when communicating with the other
over the hipersocket network will use the correct local interface IP
address so that packets will flow in both directions over the
hipersocket network. In essence, yes, but configured as described.
IP addresses in your diagram would be most useful. You know what you
are trying to do. The list does not.
As a general recommendation to the list. Always have a network diagram
the includes IP addresses and subnet masks. Because hipersockets, OSA's
and vswitches can extend the corporate router/switch network into the
mainframe, the diagram should include the subnet and mask for the
broadcast domains to which the OSA is connected. If VLAN tagging is
being used, that should be documented as well. This comes from over
three decades of network experience. Consider a diagram a "best practice."
Tom, hope this helps.
Harold Grovesteen
Tom Duerbusch wrote:
Hi Mark
I'm not sure what you mean. As this is my first time into multiple
interfaces to the same host.
Are you saying that when VSE wants to use the hipersocket interface, it
should do so by using a different IP address?
In the VSE world, I have two routes:
* DIRECT ROUTES
DEFINE ROUTE,ID=NEWESA4,LINKID=VSW1,IPADDR=192.168.099.024
DEFINE ROUTE,ID=LINUX41,LINKID=HIP1,IPADDR=192.168.193.141
* INDIRECT ROUTES
On the Linux side, if I want to connect to it via the OSA/vswitch, I
specify an IP address of 192.168.193.141.
Are you suggesting that when I want to connect via the hiperchannel
(currently a test VSE system is the only other host on the
hiperchannel), that it specifies a different address (say
192.168.193.241)?
Enclosed is a diagram I started, but it doesn't have the IP addresses
on it yet.
Tom Duerbusch
THD Consulting
[EMAIL PROTECTED] 12/29/2006 1:07 PM >>>
The traceroute command will show you what path a packet will follow
from one
system to another. Use the -n switch to speed things up; that disables
DNS
lookups for all the IP addresses. (In your case that wouldn't be a
big
deal, but in the general case it can be.)
I would say that your IP network setup looks a little odd. Your
HiperSocket
IP addresses should not be in the same subnet as your OSA IP
addresses.
Given that they are, you would need to set up a host route, which means
a
255.255.255.255 netmask.
You really should change the HiperSocket IP addresses instead.
Mark Post
-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of
Tom
Duerbusch
Sent: Friday, December 29, 2006 1:48 PM
To: [email protected]
Subject: Re: routing verification
Yes, both route and netstat -r shows the routing info. But really
doesn't hit you over the head, on if a route is being used or not. At
least with ifconfig, you can watch the RX and TX byte counts
increment.
As I said, the FTP from VSE was comming in over the hipersocket, but
the replies were going back over the OSA. I would have never seen
this
problem if I used "route" or "netstat -r". And I just accidently
stumbled over it when I left the ifconfig results up. (finally
realized
that the TX count for the hipersocket connection wasn't changing, but
TX
for ETH0 was....)
Anyway, it seems like I'm having trouble setting up a static route,
via
hipersockets to my VSE machine.
I do:
yast
network services
routing
Default gateway: 192.168.192.1
Select expert configuration
Add
Destination (for VSE) 192.168.192.7
Gateway for the hipersocket connection: 192.168.192.7 (coding a
direct
route? right?)
Netmask: 255.255.255.0
Device: I select the hipersocket one.
On the Linux console, I get:
linux41:~ # Dec 29 12:43:45 linux41 ifdown-route: Error while
excuting:
Dec 29 12:43:45 linux41 ifdown-route: Command 'ip route del to
192.168.192.7/24
via 192.168.192.7 dev hsi0' returned:
Dec 29 12:43:45 linux41 ifdown-route: RTNETLINK answers: Invalid
argument
Dec 29 12:43:45 linux41 ifdown-route: Configuration line:
192.168.192.7
192.168.
192.7 255.255.255.0 hsi-bus-ccw-0.0.2500
Dec 29 12:43:46 linux41 ifup-route: Error while excuting:
Dec 29 12:43:46 linux41 ifup-route: Command 'ip route replace to
192.168.192.7/2
4 via 192.168.192.7 dev hsi0' returned:
Dec 29 12:43:46 linux41 ifup-route: RTNETLINK answers: Invalid
argument
Dec 29 12:43:46 linux41 ifup-route: Configuration line: 192.168.192.7
192.168.19
2.7 255.255.255.0 hsi-bus-ccw-0.0.2500
Dec 29 12:43:55 linux41 kernel: hsi0: no IPv6 routers present
The route command shows:
route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
Use
Iface
192.168.192.0 * 255.255.252.0 U 0 0
0
eth0
192.168.192.0 * 255.255.252.0 U 0 0
0
hsi0
link-local * 255.255.0.0 U 0 0
0
eth0
loopback * 255.0.0.0 U 0 0
0
lo
default 192.168.192.1 0.0.0.0 UG 0 0
0
eth0
Not exactly what I wanted. I now seem to be routing 192.,168.192.0
over both interfaces.
What I want is everything to go over the default (eth0) except for
192.168.192.7 which should go over hsi0 (hipersockets).
What am I missing here?
Thanks
Tom Duerbusch
THD Consulting
(Happy New Year)
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