May 4 18:11:11: %C4K_IPROUTEMAN-3-FIBADJMANDUPLICATEADJ: FIB Entry: Tried to create a duplicate adj for key 18.104.22.168/20
May 4 18:11:11: %C4K_IOSIPROUTEMAN-3-ADJMANNOMOREADJS: AdjMan: hardware adjacency resources exhausted, performance may be degraded.
The ip address (altered) in question would belong to a dhcp client that would be plugged into an edge switch (2950xl) and not the core switch. An odd item of note: the dhcp assignment would have a 24 bit netmask, not the /20 as indicated above.
Given the nature of our network, the end users are conference visitors/exibitors that are only connected to the network during a conference and leave once the show is over, so I cannot access the offending end device to examine it.
The last time I saw this error was during a conference that had a lot of Mac users.
Error Message C4K_IPROUTEMAN-3-FIBADJMANDUPLICATEADJ:FIB Entry:Tried to create a duplicate adj for key [object-info]
Explanation A request was made to add a duplicate adjacency to the Forwarding Information Base (FIB) adjacency database.
The 4006 that logs the error is one of the core switches for our network.
Cisco Internetwork Operating System Software
IOS (tm) Catalyst 4000 L3 Switch Software (cat4000-IS-M), Version 12.1(8a)EW1, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
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