| Message Code | PIX-4-412002 |
| Severity | Warning |
| Description | Detected bridge table full while inserting MAC MAC_address on interface interface. Number of entries = num. |
| Explanation | This message is generated when the bridge table is full and an attempt is made to add one more entry. The Cisco ASA maintains a separate Layer 2 forwarding table per context and the message is generated whenever a context exceeds its size limit. The MAC address will be added, but it will replace the oldest existing dynamic entry (if available) in the table. |
| User Action | This might be an attempted attack. Make sure that the new bridge table entries are valid. In case of attack, use EtherType ACLs to access control vulnerable hosts. |
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