Enabling Qos Pre-Classify; Enabling Logging Of Ipsec Packets; Configuring The Df Bit Of Ipsec Packets - H3C S5830V2 Security Configuration Manual

Step
2. Bind a source interface to an
IPsec policy.

Enabling QoS pre-classify

If you apply both an IPsec policy and a QoS policy to an interface, QoS classifies packets by using the
new headers added by IPsec. If you want QoS to classify packets by using the headers of the original IP
packets, enable the QoS pre-classify feature.
For more information about QoS policy and classification, see ACL and QoS Configuration Guide.
To enable the QoS pre-classify feature:
Step
1. Enter system view.
2. Enter IPsec policy view or
IPsec policy template view.
3. Enable QoS pre-classify.

Enabling logging of IPsec packets

Perform this task to enable the logging of IPsec packets that are discarded because of reasons such as
IPsec SA lookup failure, AH-ESP authentication failure, and ESP encryption failure. The log information
includes the source and destination IP addresses, the SPI value, and the sequence number of a discarded
IPsec packet, and the reason for the failure.
To enable the logging of IPsec packets:
Step
1. Enter system view.
2. Enable the logging of IPsec
packets.

Configuring the DF bit of IPsec packets

Perform this task to configure the Don't Fragment (DF) bit in the new IP header of IPsec packets in one of
the following ways:
Command
ipsec { ipv6-policy | policy }
policy-name local-address
interface-type interface-number
Command
system-view
•
To enter IPsec policy view:
ipsec { policy | ipv6-policy }
policy-name seq-number
[ isakmp | manual ]
•
To enter IPsec policy template
view:
ipsec { policy-template |
ipv6-policy-template }
template-name seq-number
qos pre-classify
Command
system-view
ipsec invalid-spi-recovery enable
256
Remarks
By default, no source interface is
bound to an IPsec policy.
Remarks
N/A
Use either command.
By default, QoS pre-classify is
disabled.
Remarks
N/A
By default, the logging of IPsec
packets is disabled.