[VPN] Cisco IPSec Tunnel Bandwidth Utilization

[Paul Lundgren]

I have a Cisco ASA 5520 supporting multiple VPNs - both remote-access and
Lan-to-Lan.  I would like to monitor the bandwidth utilization on a single
IPSec Lan-to-Lan tunnel.  The particular tunnel I want to monitor is quite
unstable and each time the VPN goes down and re-establishes itself the
interface index changes thus changing the SNMP OID used to measure the tx
and rx bytes for that respective tunnel.  Is anyone familiar with a network
management app that can handle this case and continue to monitor a tunnel
over the long-term?  I'm currently using MRTG and can write a script to try
to accomplish this myself but I'd prefer a cleaner solution since my coding
skills lean towards the novice side.

Thanks,
-Paul
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