With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
CISCO Express Forwarding Adjacency Connection Id
In cases where cefLinkType, interface and the next hop address are not able to uniquely define an adjacency entry (e.g. ATM and Frame Relay Bundles), this object is a unique identifier to differentiate between these adjacency entries. In all the other cases the value of this index object will be 0.
Back to CISCO-CEF-MIB MIB page.
IPHost Network monitor allows you to monitor cefAdjConnId on Cisco device via the SNMP protocol.
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Easy monitoring of cefAdjConnId with IPHost tools