| app-vis enable | Enables application visibility through the generation of statistics about application-based traffic flowing through the SteelHead. | 
| bandwidth port <port> | Specifies a port to be monitored for statistics. | 
| peer-opt enable | Enables peer optimization statistics collection. | 
| perf {algo {period | envelope} | enable | envelope decay-time <number> | period time-interval <number> | wan-bw iface inpath0_0 rx <number>} | Performance statistics collection settings. The following parameters can be configured: •	algo period—Specifies the fixed period algorithm. •	algo envelope—Specifies the envelope estimation algorithm. •	envelope decay-time <number>—Specifies the set the envelope decay-time in minutes. The default is 1000. •	period time-interval <number>—Specifies the period time interval in minutes. The default is 60. •	wan-bw iface <interface> rx <number> tx <number>—Specifies the WAN bandwidth interface settings. |