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Author: Admin | 2025-04-27
The configuration has been applied. Older SAs will not be affected. Same behavior holds true when fragmentation is disabled. A maximum of a 100 fragments can be received. Examples To disable IKEv2 fragmentation: no crypto ikev2 fragmentation To reinstate the default operation: crypto ikev2 fragmentation or crypto ikev2 fragmentation mtu 576preferred-method ietf To change the MTU value to 600: crypto ikev2 fragmentation mtu 600 To restore the default MTU value: no crypto ikev2 fragmentation mtu 576 To change the preferred method of fragmentation to Cisco: crypto ikev2 fragmentation preferred-method cisco To restore the preferred fragmentation method to IETF: no crypto ikev2 fragmentation preferred-method cisco or crypto ikev2 fragmentation preferred-method ietf AAA Authentication With Authorization aaa authentication http console LOCALaaa authorization http console radius AAA authentication is performed against the LOCAL server using the username/password typed in by the user. Additional authorization is performed against the radius server using the same username. service-type attribute, if retrieved, is processed as described earlier. Enable IPsec over NAT-T NAT-T lets IPsec peers establish a connection through a NAT device. It does this by encapsulating IPsec traffic in UDP datagrams, using port 4500, which provides NAT devices with port information. NAT-T auto-detects any NAT devices and only encapsulates IPsec traffic when necessary. Note Due to a limitation of the AnyConnect client, you must enable NAT-T for the AnyConnect client to successfully connect using IKEv2. This requirement applies even if the client is not behind a NAT-T device. The ASA can simultaneously support standard IPsec, IPsec
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