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TCC_2
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Core issue

The ability to apply sequence numbers to IP access list entries simplifies access list changes. Prior to the IP Access List Entry Sequence Numbering feature, there was not a way to specify the position of an entry within an access list.

A Cisco platform can unexpectedly reload while it attemps to resequence an access list. This symptom is observed when a few Access Control Entries (ACE) are deleted and then immediately enters the ip access-list resequence access-list-name starting-sequence-number increment command.

This problem is documented in Cisco bug ID CSCsa50971.

Resolution

Currently, a workaround does not exist.

This problem is fixed in Cisco IOS  Software Release 12.2(25)EWA6 and later, hence in order to resolve this issue, a Cisco IOS upgrade is needed, which can be downloaded from the LAN Switching Software page.

Refer to IP Access List Entry Sequence Numbering for more information.

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