Broker Teritory and cluster issue

Hi Team,

I want to create webMethods messaging alias for broker. I have 4 broker in a teritory. In a teritory every broker has a subscription
list of other broker. Will it be possibll if any broker is down in teritory the message can be published on other broker of teritory. I have tried this and I don’t know what should
I give in broker name while creating connection alias.

Can some one help me on this.

I know this can be achieved using clustering as well. But in cluster environment what should be broker name while creating messaging connection alias ?