Both units standby ?

Hello,

I'm running 10.2.1 Build 511.0 Edition Hotfix HF3 on both cluster members. Fail-over is configured and they can sync to each other:

[admin@LB005:Standby] ~ tmsh run sys config-sync Checking configuration on local system and peer system... Peer's IP address: 10.131.1.90 Synchronizing Master Keys... Saving active configuration... Configsync Mode: Push Transferring UCS to peer... Installing UCS on peer... Obtaining results of remote configuration installation... Saving active configuration... Current configuration backed up to /var/local/ucs/cs_backup.ucs. tar: SPEC-Manifest: time stamp 2014-03-14 07:38:21 is 1 s in the future tar: SPEC-Files: time stamp 2014-03-14 07:38:21 is 1 s in the future Product : BIG-IP Version : 10.2.1 Hostname: UCS : LB005.net.eu.jnj.com System: LB006.net.eu.jnj.com Installing --shared-- configuration on host LB006.net.eu.jnj.com Installing configuration... Post-processing... Reading configuration from /config/low_profile_base.conf. Reading configuration from /defaults/config_base.conf. Reading configuration from /config/bigip_sys.conf. Reading configuration from /config/bigip_base.conf. Reading configuration from /usr/share/monitors/base_monitors.conf. Reading configuration from /config/profile_base.conf. Reading configuration from /config/daemon.conf. Reading configuration from /config/bigip.conf. Reading configuration from /config/bigip_local.conf. Loading the configuration ... [admin@LB005:Standby] ~

What could be the reason both units stay in standby mode ? I already tried to force one to standby (b failover standby), however, the other one becomes not active...