configuration sanity check

Daniel Corbe dcorbe at
Thu Oct 29 12:28:24 UTC 2015

"marcel.duregards at" <marcel.duregards at> writes:

> Hi Nanogers,
> Any recommendation about a software which check the live config of
> cisco/juniper devices against some templates ?
> The goal is to have a template about different function device, like:
> - CORE device must have this bloc and this clock
> - PE device must have at least that and that
> - CPE must have this and that
> - Distrib switch block 1 and block2
> - etc...
> And the software run once every day to check which device do not
> comply with those rules and generate an alert.
> Thank,
> - Marcel

You can also catch and minimize mistakes in real-time by:

1) Implementing and enforcing a proper change control system

2) Implementing tools like Rancid, which are designed to scrape router
configs and E-Mail changes in the format of a unified diff to everyone
in your engineering team.

3) Make liberal use of tools like RtConfig so routine changes aren't a
painful (read: manual) time-consuming process.

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