SnmpLens
SnmpLens, running in your browser
The same Svelte application the desktop build ships, with the SNMP backend replaced by fixtures. Every device in it is fictional and nothing leaves your browser.
What you can do in it
Run a GET, a WALK or a GETBULK
against one of the seeded devices and read the result as a flat list or as a real
table — pivoted by column and split by INDEX. Browse the MIB tree,
select a node and read its syntax, access and description.
Open ACME-POE-MIB in the MIB editor, break something,
and watch the analysis report it with a line and a column. Look at the
monitoring tab, where five series are polled live and one of them
climbs past its threshold.
Open the Dashboard tab to see one preset bound to two switches of different sizes. Pick one equipment or the whole group, and look at the port walls, the traffic of both on one chart, and a map of the rack coloured by what each port is doing.
What it cannot do is anything that needs the machine underneath. Installing a service, starting with your session, writing a MIB to disk, opening a file dialog, applying an update, sending a real test notification to a syslog relay — each of those says so rather than pretending to have done it.
The SNMP answers are fixtures, so typing your own device address will not reach it. For that, download the application — it is one executable with no runtime to install.