Hi, my first post, so have mercy please ;-) Goal: compare the configuration template (I call it MASK) against actual device configurations to detect anomalies. Here's a sample device config:

==============
mpls ldp
 router-id 192.168.130.5
 nsr
 graceful-restart
 backoff 5 10
 session protection
 neighbor 192.168.130.1 password encrypted pwd1
 neighbor 192.168.130.2 password encrypted pwd2
 neighbor 192.168.130.25 password encrypted pwd3
 igp sync delay 10
 label
  allocate for LLAF
 !
 log
  neighbor
  nsr
 !
 interface TenGigE0/0/0/0
 !
 interface TenGigE0/1/0/0
 !
 interface TenGigE0/7/0/0
 !
!
==============
[download]

And now my template/MASK:

======================================================================
=|MASK|mpls ldp|=
======================================================================
(mpls ldp)
 (router-id) (__REGEX__)
 nsr
 graceful-restart
 backoff 5 10
 session protection
 (neighbor) (__REGEX__) password encrypted __REGEX__
 (neighbor) (__REGEX__) password encrypted __REGEX__
 (neighbor) (__REGEX__) password encrypted __REGEX__
 igp sync delay 10
 label
  allocate for LLAF
 !
 log
  neighbor
  nsr
 !
 interface (__REGEX__)
 !
 interface (__REGEX__)
 !
 !
======================================================================
[download]

So I read all device config in a string and match with /..../s against template above; before actual match the template updated with $mask_tmp =~ s/__REGEX__/^\\n+/g; Easy part is to match the template against the configuration when eg. number of neighbor or interface statements is the same on all devices. But that is not the case, so I'm looking for idea how to match (and capture necessary parameters such as IP numbers of all neighbors) irrespective of number of neighbors/interfaces in actual config. TIA

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