DSW121(config)#ip sla ?
  <1-2147483647>          Entry Number
  apm                     IP SLAs Application Performance Monitoring
                          Configuration
  group                   Group Configuration or Group Scheduling
  key-chain               Use MD5 authentication for IP SLAs Control Messages
  logging                 Enable Syslog
  low-memory              Configure Low Water Memory Mark
  reaction-configuration  IP SLAs Reaction-Configuration
  reaction-trigger        IP SLAs Trigger Assignment
  reset                   IP SLAs Reset
  responder               Enable IP SLAs Responder
  restart                 Restart An Active Entry
  schedule                IP SLAs Entry Scheduling
  slm                     Service Level Management

DSW121(config)#ip slb ser
DSW121(config)#ip slb serverfarm PUBLIC
DSW121(config-slb-sfarm)#rela 172.16.10.250
                           ^
% Invalid input detected at '^' marker.

DSW121(config-slb-sfarm)#real 172.16.10.250
DSW121(config-slb-real)#ins
DSW121(config-slb-real)#?
SLB real server config
  default     Set a command to its defaults
  exit        Exit real server submode
  faildetect  TCP connection failure detection
  inservice   enable real server
  maxconns    maximum number of connections
  no          Negate a command or set its defaults
  reassign    TCP connection reassign threshold
  retry       Time to retry failed real server
  weight      real server weighting factor

DSW121(config-slb-real)#ins
DSW121(config-slb-real)#inservice
DSW121(config-slb-real)#exit
DSW121(config-slb-sfarm)#real 172.16.10.251
DSW121(config-slb-real)#ins
DSW121(config-slb-real)#inservice
DSW121(config-slb-real)#exit
DSW121(config-slb-sfarm)#real 172.16.10.252
DSW121(config-slb-real)#ins
DSW121(config-slb-real)#inservice
DSW121(config-slb-real)#exit
DSW121(config-slb-sfarm)#exit
DSW121(config)#ip slb serverfarm DMZ
DSW121(config-slb-sfarm)#re
DSW121(config-slb-sfarm)#real 172.16.10.151
DSW121(config-slb-real)#ins
DSW121(config-slb-real)#inservice
DSW121(config-slb-real)#exit
DSW121(config-slb-sfarm)#rea
DSW121(config-slb-sfarm)#real 172.16.10.152
DSW121(config-slb-real)#ins
DSW121(config-slb-real)#inservice
DSW121(config-slb-real)#end
DSW121#
*Mar  1 01:56:40.055: %SYS-5-CONFIG_I: Configured from console by console
DSW121#sh ip slb real

real                  server farm      weight  state          conns
-------------------------------------------------------------------
172.16.10.151         DMZ              8       OPERATIONAL    0
172.16.10.152         DMZ              8       OPERATIONAL    0
172.16.10.250         PUBLIC           8       OPERATIONAL    0
172.16.10.251         PUBLIC           8       OPERATIONAL    0
172.16.10.252         PUBLIC           8       OPERATIONAL    0
DSW121#