chloe K wrote: > Hi > > ls there any script / program to check router / switch? > > eg: sh interface any error Use SNMP, that's what it's there for. All good routers/switches expose SNMP counters for interface errors which you can collect either by hand with snmpget or something, or use something like MRTG, Cacti, Nagios or any number of other tools that are available. nate