Hi,
I am not sure if you guys got this email from me.
I am still unsure what you are implying. Is this the setup you suggest.
1) Create Two Virtual IPs. VIP1 and VIP2 (one would be current production IP address and other the current HA IP address)
2) Create Two IPs for two actual Interface (LAN adaptors). - IP1 and IP2 (according to your earlier email, this IP doesnt have to be on the DNS).
3) Link VIP1 to IP1 and IP2;.. users access VIP1, traffic routed through both IP1 and IP2
4) Link VIP2 to IP2 only, ITERA is linked to this IP. Only Itera traffic goes through VIP2
5) Incase IP1 fails, VIP1 automatically routes traffic to IP2 which is being used by Itera too.
Please confirm the above.
Also, regarding your response below.
1) Could you please provide details how this may be done if possible.
2) ok
3) Ok. When you say they do not have DNS entry. Do you mean they could assigned an IP which is not a part of internal subnet. So we dont need the network guys to give us a set of 2 new IPs.
4)I checked online resources. I believe we can set the priority under advanced in Interface properties in Iseries Navigator.
Thanks for all you help.
Regards,
Vik.
________________________________
From: Denis Robitaille <denis_robitaille@xxxxxxxxxxxx>
To: "Discussion, Midrange Systems Technical" <midrange-l@xxxxxxxxxxxx>
Sent: Wednesday, October 2, 2013 6:23 PM
Subject: Re: Rép. : Setting IP redunduncay in AS/400
1) It can be avoided. The scenario is a bit complex but that can be done without downtime
2) yes, as far as I know
3) You dont have to. We do not. But the 2 IP do not have DSN entry. They can still be access directly. This is not an issu for us
4) For this, I would refer you to the documentation on the info center.
Denis Robitaille
Chef de service TI
Cascades Centre des technologies,
une division de Cascades Canada ULC
412 Marie Victorin
Kingsey falls(Québec) Canada J0A 1B0
T : 819 363 6130
Pour toute information sur les événements techniques, veuillez consulter notre calendrier Groupwise CAS_CALENDRIER_TI
Vikhyath Kamath <vikyat_kaamath@xxxxxxxxx> 2013-10-01 11:37 >>>
couple of questions.
1) I guess we would need downtime for this?
2) As most of our systems have 2 LAN adaptors, can the adaptor used for HA(ITERA) have two IPs.
3) I guess we need to block users from accessing two IPs setup on the physical adaptors. (using Firewall).
4) Do you know how Virtual IP routes traffic to the two IPs? Can we select the priority where more traffic goes?
Regards.
From: Denis Robitaille <denis_robitaille@xxxxxxxxxxxx>
To: "midrange-l@xxxxxxxxxxxx" <midrange-l@xxxxxxxxxxxx>
Sent: Tuesday, October 1, 2013 8:17 PM
Subject: Rép. : Setting IP redunduncay in AS/400
We do this using "proxy ARP"
First create the 2 actual interface:
ADDTCPIFC INTNETADR('x.x.x.x') LIND(LINETH01) SUBNETMASK('x.x.x.x') LCLIFC(‘y.y.y.y’)
ADDTCPIFC INTNETADR('x.x.x.x') LIND(LINETH02) SUBNETMASK('x.x.x.x') LCLIFC(‘y.y.y.y’)
Then create the virtual IP adress (this is the one that will get used by users ans linked to your DNS):
ADDTCPIFC INTNETADR('y.y.y.y') LIND(*VIRTUALIP) SUBNETMASK('255.255.255.255')
Then you activate the proxy ARP using the navigator:
- You go to Network/TCPIP configuration/IPv4/Interface
- right click on the virtual interface and select Properties
- selcect Advanced
- Activate the proxy ARP protocol (the interface must be varied off to be able to do this)
Finnaly, you must link the physical interface with the virtual one:
- You go to Network/TCPIP configuration/IPv4/Interface
- right click on the virtual interface and select Properties
- selcect Advanced
- Choose among the available inetrface and add them to prefered
The wording may not be exact (our systems are in french) but those are the main steps
Denis Robitaille
Chef de service TI
Cascades Centre des technologies,
une division de Cascades Canada ULC
412 Marie Victorin
Kingsey falls(Québec) Canada J0A 1B0
T : 819 363 6130
Pour toute information sur les événements techniques, veuillez consulter notre calendrier Groupwise CAS_CALENDRIER_TI
Vikhyath Kamath <vikyat_kaamath@xxxxxxxxx> 2013-10-01 09:22 >>>
Hi,
We have 5 LPARs on each of our servers. Recently we faced an issue where the LAN adaptor of iseries system failed and we had a five hour outage.
I was considering if we could have IP redundency - so that each LPAR would have 2 IPs pointing one IP which the user access. So if one IP fails, there is a fail-over to the other IP. Could some please guide how this is done in AS/400 system?
Thanks and Regards,
Vik.
midrange.com
