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Cisco Bug: CSCun33897 - 4500 IOS-XE: Crash on ACL/PBR configuration

Last Modified

Sep 01, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases


Description (partial)

A Catalyst 4500 series switch running IOS-XE may unexpectedly reboot when making changes to ACL-based features which are applied to an interface (e.g. access-groups, policy-based routing, etc).
the problem occurs in VSS setups only.

This has been observed on all 3.5.x IOS-XE releases. One known trigger is to apply a route-map to an interface.
- This bug occurs when ACL is modified for PBR or WCCP features only.

Related Community Discussions

4500 IOS-XE: Crash on ACL configuration
Hi All , We have recently migrated from standalone to VSS on our C4500 switches with Sup 7-E. but the switch crashes every time we edit or modify the ACL with below error message : %SYS-3-BADBLOCK: Bad block pointer  %SYS-6-MTRACE: mallocfree: addr, pc %SYS-6-BLKINFO: Corrupted next pointer blk %SYS-6-MEMDUMP: 0x7E043FF8 We noticed that there is a new bug for this issue i.e <key>CSCun33897</key>  Symptom: A Catalyst 4500 series switch running IOS-XE may unexpectedly reboot when ACL configuration is applied ...
Latest activity: Jun 05, 2014
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