i am new to cisco gear and networking in general. my boss has asked me to monitor the corporate network and report on utilization, traffic and deal with any faults. we have 60 servers, 1500+ clients, 7 3640 routers, 20 1721 and a few cisco switches although most are 3com. clients dial in over ISDN and PSTN as well as local access. the 3640's are in our main sites and 1721's are in small sites. routers are connected together using dedicated serial lines varying from 128k to 512k. SNMP is not enabled on any of the gear as far as i know, will i need it? can anyone recomend any packages and reading material to help me with this task.