Re: NATing on z/VM

2011-11-28 Thread Rob van der Heij
On Mon, Nov 28, 2011 at 2:41 AM, Alan Altmark alan_altm...@us.ibm.com wrote: How did you do that?  Through the 'send dhcp-client-identifier' option?  I have wished that the dchp client config file had something like send vname-as-dhcp-client-identifier so that it could in the constant part of

NATing on z/VM

2011-11-27 Thread Cameron Seay
All: We need to use NATing to generate private IP addresses that can be accessed externally to our network. Has anyone done this? Thanks. -- Cameron Seay, Ph.D. Electronics, Computer and Information Technology School of Technology NC A T State University Greensboro, NC 336 334 7717 x2251

Re: NATing on z/VM

2011-11-27 Thread Richard Troth
The most obvious solution is to run one zLinux guest straddling internal and external, forwarding enabled, and tell the others it is their router. If you need to generate the internal addresses, run DHCP server on it (or on another internal guest). You'll need layer 2 for DHCP traffic. NAT on

Re: NATing on z/VM

2011-11-27 Thread Richard Troth
... I should add that I don't personally recommend DHCP in a z/VM context. Better to have the addresses pre-assigned to each guest. (You'd want to do some prep of your virt MAC addresses. Might as well cut to the chase, even relegate the MAC addrs to VM and save that effort.) On z/VM there are

Re: NATing on z/VM

2011-11-27 Thread David Boyes
Yes. Use a Linux guest as your external access and use iptables to do the NAT. Works just like it does on intel, but note that it will require a fair amount of CPU because the guest has to examine every packet. On Nov 27, 2011, at 12:25, Cameron Seay cws...@gmail.com wrote: All: We

Re: NATing on z/VM

2011-11-27 Thread Alan Altmark
On Sunday, 11/27/2011 at 01:38 EST, Richard Troth vmcow...@gmail.com wrote: ... I should add that I don't personally recommend DHCP in a z/VM context. Better to have the addresses pre-assigned to each guest. (You'd want to do some prep of your virt MAC addresses. Might as well cut to the chase,

Re: NATing on z/VM

2011-11-27 Thread r.stricklin
On Nov 27, 2011, at 4:22 PM, Alan Altmark wrote: Let's not throw the baby out with the bathwater, eh? :-) If you specify MACID on the NICDEF, a DHCP reservation can be used to assign a permanent IP address. Some installations do this for all servers, as they want to be able to update the

Re: NATing on z/VM

2011-11-27 Thread Bruce Furber
Maybe you could advertise a public address using. QUAGA OSPFD Bruce -m We need to use NATing to generate private IP addresses that can be accessed externally to our network. Has anyone done this? -- For LINUX-390 subscribe /

Re: NATing on z/VM

2011-11-27 Thread Alan Altmark
On Sunday, 11/27/2011 at 07:57 EST, r.stricklin b...@typewritten.org wrote: My solution was to have the DHCP client send the VM user name as the client ID, and key the static leases off that instead of the MAC address. It worked so well we stuck with it after migrating to Layer 2 VSWITCHes.

Re: NATing on z/VM

2011-11-27 Thread r.stricklin
On Nov 27, 2011, at 5:41 PM, Alan Altmark wrote: How did you do that? Through the 'send dhcp-client-identifier' option? I have wished that the dchp client config file had something like send vname-as-dhcp-client-identifier so that it could in the constant part of the clone. Then it could