DNS & Network Services Calculators

17 free dns & network services calculators in Networking.

Active Directory Replication CalculatorEstimate AD replication traffic per cycle, site link utilisation and end-to-end convergence time.
DHCP Lease CalculatorWork out DHCP T1 and T2 renewal timers and the renewal load a client population puts on the server.
DHCP Pool Capacity CalculatorCheck whether a DHCP pool has enough addresses once lease overhang and growth headroom are included.
DNS Cache CalculatorSize a resolver cache and predict its hit ratio from query rate, unique names and record TTL.
DNS Query Rate CalculatorTurn user population into average and peak DNS query rates and the number of resolvers required.
DNS Zone Size CalculatorEstimate zone file size, server memory and zone transfer time from your record counts and DNSSEC state.
Infrastructure Services Health Score CalculatorScore DNS, DHCP, NTP, AAA and syslog health into one weighted grade and flag the weakest service.
IPFIX Storage CalculatorSize IPFIX collector storage from template field counts, flow rate, retention and compression.
LDAP Query CalculatorSize LDAP directory load: query rate, cache offload, result bandwidth and per-connection query rate.
mDNS CalculatorEstimate multicast DNS packet rate, bandwidth and wireless airtime cost for a device population.
NetFlow Storage CalculatorSize NetFlow collector storage and export bandwidth from flow rate, sampling and retention.
NTP Drift CalculatorConvert clock drift in ppm into error per poll interval, per day and across a holdover window.
RADIUS Capacity CalculatorSize RADIUS servers from authentication rate, interim accounting load and peak-to-average factor.
Service Discovery CalculatorSize a service registry: heartbeat rate, watch notification fan-out and registry memory footprint.
SNMP Polling CalculatorSize SNMP polling load: varbinds per second, PDUs per cycle, bandwidth and daily data points.
Syslog Growth CalculatorProject syslog volume and retained storage from device count, message rate, size and compression.
TACACS+ Session CalculatorEstimate TACACS+ request volume from device count, admin sessions and per-command authorisation.