Default route in /etc/sysconfig/network. On Thu, Oct 30, 2014 at 10:26 AM, Chase, John <[email protected]> wrote:
> No. > > -jc- > > > -----Original Message----- > > From: Linux on 390 Port [mailto:[email protected]] On Behalf Of > Ambros, Thomas > > Sent: Thursday, October 30, 2014 9:11 AM > > To: [email protected] > > Subject: Re: Linux guests on DR machine not reachable > > > > Are you running mproute? > > > > Thomas Ambros > > zEnterprise Operating Systems > > zEnterprise Systems Management > > 518-436-6433 > > > > -----Original Message----- > > From: Linux on 390 Port [mailto:[email protected]] On Behalf Of > Chase, John > > Sent: Thursday, October 30, 2014 10:01 > > To: [email protected] > > Subject: Linux guests on DR machine not reachable > > > > Cross-posted to IBMVM and LINUX390 lists > > > > Greetings. > > > > We're bringing up z/VM and Linux guests for the first time at a D/R > exercise. Since we have our own > > CBU "warm site", we create an isolated network to be used for the D/R > exercise. The primary internal > > network is prefixed 10.1 and the isolated D/R network is prefixed 10.2. > > > > After z/VM (6.2, non-SSI) IPLs, we logon TCPMAINT and edit PROFILE TCPIP > to change the HOME and > > DEFAULTNET IP addresses from 10.1.xxx.yyy to 10.2.xxx.yyy, then shut > down and restart TCPIP. z/VM is > > now reachable from non-mainframe devices plugged into the isolated > network (e.g., Ping from a laptop > > works fine; 3270 emulator sessions establish via non-ICC ports). > > > > Next we login to a Linux (RHEL 6.3 and 6.5) guest (3270 console), where > we had pre-configured a > > "clone" of the ifcfg-eth0 file to specify 10.2 (instead of 10.1) in all > the appropriate places. We > > rename ("mv") the "prod" and "D/R" copies so that ifcfg-eth0 now > specifies 10.2 instead of 10.1 in all > > the right places. We stop and restart network services, but Linux is > not ping-able from outside. OK > > let's reboot Linux. No change; still can't ping Linux from outside the > mainframe but within the > > isolated network. OK, we'll just bounce the whole virtual machine > (SIGNAL SHUTDOWN followed by > > XAUTOLOG from OPERATOR). That didn't work, either. We didn't notice > any network-related error > > message as Linux came up again. > > > > Not much to go on, but can anybody think of what we might have missed in > reconfiguring Linux to "play" > > in the isolated (10.2) network? > > > > TIA, > > > > -jc- > > > > ********************************************************************** > > Information contained in this e-mail message and in any attachments > thereto is confidential. 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