IT depends on the manufacturer. Cisco can updates OIDs even on 1 second time basis (maybe less?).
A long time ago I've made an "real time monitor" to troubleshooting problems at the WAN. IT was not a NMS, only visual graphs using PHP and RRDtool in one page showing IfOctests, IfDiscards, IfErrors, IfNUnicast and, in some cases, BECN and FECN for frame relay. 2010/11/22 Sergey Voropaev <serge.devo...@gmail.com> > Steinar, > > I'm sure that router updates its counter more often than 5 seconds. > > > On 22 November 2010 12:46, <sth...@nethelp.no> wrote: > > > > Does any one know the NMS (network management software) which can do > the > > > fallowing: > > > > > > 1. Monitor on Cisco Routers/Switches interface utilization every 5-10 > > > seconds and send e-mail alarm when utilization low or high of > predefined > > > thresholds. > > > 2. Collect net-flow statistics (at least src/dst) with granularity of > > 5-10- > > > seconds. > > > > > > The main idea is to have detailed monitoring of the external links and > to > > be > > > able to know why (by what traffic type) and when link was highly > > utilized. > > > > Your requirements are somewhat unrealistic. Even if your NMS can fetch > > SNMP counters / Netflow info every 5-10 seconds, you have no guarantee > > that the router *updates* the counters / Netflow info this often. > > > > Talk to your router vendor first. > > > > Steinar Haug, Nethelp consulting, sth...@nethelp.no > > > -- []'s Lívio Zanol Puppim
