209003: Fragment database limit exceeded
Cisco ASA is a security device that provides the combined capabilities of a firewall, an antivirus, and an intrusion prevention system. It also facilitates virtual private network (VPN) connections.It helps to detect threats and stop attacks before they spread through the network.
Message: %ASA-4-209003:Fragment database limit of number exceeded:src =source_address,dest =dest_address,proto = protocol,id =number.
Event 209003 is generated when too many IP fragments are awaiting reassembly simultaneously.The message contains the:
- Maximum number of fragments.
- Source and destination IP addresses.
How could you resolve this situation?
To prevent fragmentation, see the sysopt connection tcpmss bytes command in the command reference guide. If the events keeps recurring, it might denote a denial of service attack in progress. Contact the remote peer administrator or upstream provider.