ACE 4710 - serverfarm predictor

[fmechetiuc]

  Hi, I have a pair of ACE 4710 running in failover bundle and I have a number of server farms configured on them. For one of the server farm I'd like to use a different predictor than round robin. I have two real servers members of the server farm. Usually I do select predictor round robin and put both real servers in service. In this situation I need to have only one server as active and the 2nd one to be in standby and take over when the first one is down. I have tried to put the 2nd server in standby and when I shut down the primary the 2nd one won't become active. I do have a health probe to check for the status of the server so I thought this would be enough to detect the status of the server. So my question is , how can I configure the ACE to have one server as active and the second as a backup and this second one to take traffic only when the primary is down. Thank you, Florin.

[ciscocsoc]

Hi,

There are a couple of ways of achieving your objective.

The first method works for the simple case of two servers:

serverfarm host FARM-Redacted

probe PROBE-Redacted
  rserver am03
    backup-rserver am04
    inservice
  rserver am04
    inservice standby

or you could use two serverfarms:

serverfarm host FARM-Redacted-Pri
  description Redacted Serverfarm Primary
  probe PROBE-Redacted
  rserver am03
    inservice

serverfarm host FARM-Redacted-Sec
  description Redacted Serverfarm Secondary
  probe PROBE-Redacted
  rserver am04
    inservice

policy-map type loadbalance first-match LB-POLICY-443
  class class-default
    serverfarm FARM-Redacted-Pri backup FARM-Redacted-Sec

HTH

Cathy

[fmechetiuc]

Thanks Cathy.