Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

HIGH CPU on 4510 after 802.1x

I put a customer on 802.1x using 4510. The CPU went up and trying to troubleshoot why. I have a similar setup some place else and everyhting is normal. Any ideas??


4510_SW#sh ver

Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-IPBASEK9-M), Version 15.0(2)SG7, RELEASE SOFTWARE (fc2)

Technical Support:

Copyright (c) 1986-2013 by Cisco Systems, Inc.

Compiled Wed 01-May-13 17:37 by prod_rel_team

Image text-base: 0x10000000, data-base: 0x1209444C

4510_SW#sh module

Chassis Type : WS-C4510R

Power consumed by backplane : 40 Watts

Mod Ports Card Type                              Model              Serial No.


1     6  Sup V-10GE 10GE (X2), 1000BaseX (SFP)  WS-X4516-10GE      JAE114520LD

3    48  10/100BaseTX (RJ45)V, Cisco/IEEE       WS-X4248-RJ45V     JAE0930GHG7

4    48  10/100BaseTX (RJ45)V, Cisco/IEEE       WS-X4248-RJ45V     JAE0930GHFL

5    48  10/100BaseTX (RJ45)V, Cisco/IEEE       WS-X4248-RJ45V     JAE0930GKTN

6    48  10/100BaseTX (RJ45)V                   WS-X4148-RJ45V     JAE0830R5F8

7    48  10/100/1000BaseT (RJ45)V, Cisco/IEEE   WS-X4548-GB-RJ45V  JAE11430PXM

9    48  10/100BaseTX (RJ45)                    WS-X4148-RJ        JAB04060C9K

10    48  10/100/1000BaseT (RJ45)                WS-X4448-GB-RJ45   JAE0919BT9L

CCIE 18676
Everyone's tags (5)
Cisco Employee

HIGH CPU on 4510 after 802.1x

Did you notice any memory allocation error along with below listed error message in traceback

CHKPT-3-NOMEM: Unable to allocate resources for CF on (Get buffer failed).

If yes, then please review the symptoms of this defect. This is the most closest defect I could find.

CSCth73928    malloc errors following configuration of open auth

Jatin Katyal

**Do rate helpful posts**

~BR Jatin Katyal **Do rate helpful posts**
New Member

HIGH CPU on 4510 after 802.1x

i have not seen any errors like that...I will look into it, but not sure if this is the case..

CCIE 18676
New Member

HIGH CPU on 4510 after 802.1x

to many DACL Entries.. I fixed the problem moving to VLAN instead of DACL

CCIE 18676

CCIE 18676