Metrocluster on nodes in different LANs

[Karol Michaliak]

Hi,
we want to create Metrocluster/CA with XP arrays in following configuration:
Locality A, 2 servers (A1, A2), XP array 1
Locality B, 2 servers (B1, B2), XP array 2

Arrays are connected using DWDM using Continuous Access.

Locality A and B are on different networks (not on the same LAN).
Is such configuration supported for metrocluster, or should these 4 servers be configured as physically another LAN using DWDM (and configuring router from networks A and B to this metroclaster LAN)? I have read in documentation that heartbeat can't be routed, but for data connection I didn't find any limitation.
When is it possible, how should I set the package IP address when localities A and B are on different networks?

Thanks for information.

[melvyn burnard · Accepted solution]

The rules for a Metrocluster are htsame as for a normal Serviceguard cluster, and that is that all nodes in the cluster must be on the same network.
How you set that network up is the question, possibly using Vlans?

[Michael Steele_2]

I've attached chapter 6 of HP's SGII class from 2001.

Regarding "... have read in documentation that heartbeat can't be routed..." -TRUE. Two separate heartbeat networks are required.

Regarding "...but for data connection I didn't find any limitation..."

Limitation by distance? Limitation by number of LANS? If distance then 50KM but this may have increased by now. If LANS then ???

Regarding "...how should I set the package IP address when localities A and B are on different networks?..."

All subnets to be used are listed package.cntl.

All package ips, and again subnets, are listed in package.conf.

Also, a third data center is indicated in the configuration I've attached.

[Michael Steele_2]

Here you go.