Percona XtraDB Cluster: How to skip SST when starting?

Question

Is there a way to skip State Snapshot Transfer (SST) at startup on Percona XtraDB Cluster Server?

wsrep_sst_mode=skip doesn't work:

121003  6:49:55 Percona XtraDB (http://www.percona.com) 1.1.8-rel28.1 started; 
    log sequence number 82208067084
121003  6:49:55 [ERROR] /usr/sbin/mysqld: unknown variable 'wsrep_sst_mode=skip'
121003  6:49:55 [ERROR] Aborting

I'm using Percona-XtraDB-Cluster-server-5.5.27-23.6.356.rhel5.