an issue with implementing service guard on WAN

[miki leon]

Hi

i want to ask all the service guard expert a que. on :

if it is posible to implemening a service guard that have 2 node with diff network that is connecting with a brige .

[Duncan Edmonstone]

If the two nodes are not in the same IP subnet, then you cannot fail-over using just serviceguard.

HTH

Duncan

[PIYUSH D. PATEL]

Hi Miki,

Just some thoughts.

MCSG requires that both the nodes should be on the same network. Both the nodes communicate with each other , whether they are online or not through heartbeat signals. This hearbeat signals are sent every 1 sec. If the other node doesnt receive the heartbeats properly in time then there is always a chance that the node in the cluster can go down.

It is recommended that if both nodes are in same n/w then it will be good.

Piyush

[Jeff Schussele]

Hi Miki,

No sorry, both nodes must reside in the same subnet. Cannot have a bridge in the middle.
Consider changing the network architecture to expand the subnet & remove the bridge - thus creating a single collision domain. Or move one node into the other's subnet.

Rgds,
Jeff

[Gene Crowley]

If you need the servers to be in diffrent lans (ie disaster recovery at another site) you will need Metro or Continental Cluster to go along with Service Guard.

[melvyn burnard]

MetroCluster does not support going across different networks. It still has to comply with the standard SG requirement of all nodes being on the same subnets.
Continental Cluster is 2 completely separate clusters on different networks, so different rulesets.