R3204P16-HP Load Balancing Module System Maintenance Configuration Guide-6PW101

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Figure 10 Flow logging
Table 8 Flow logging configuration items
Item Descri
p
tion
Version
Set the version of flow logging, including 1.0 and 3.0.
IMPORTANT:
Configure the flow logging version according to the capacity of the LB module that
receives logs. If the log receiving card does not support flow logging of a certain
version, the card cannot resolve the logs received.
Source IP Address of
Packets
Set the source IP address of flow logging packets.
After the source IP address is specified, when Device A sends flow logs to Device B,
it uses the specified IP address instead of the actual egress address as the source IP
address of the packets. In this way, although Device A sends out packets to Device
B through different ports, Device B can judge whether the packets are sent from
Device A according to their source IP addresses. This function also simplifies the
configurations of ACL and security policy: If you specify the same source address as
the source or destination address in the rule command in ACL, the IP address
variance and the influence of interface status can be masked, thus filtering flow
logging packets.
You are recommended to use the IP address of the loopback interface as the source
IP address of flow logging packets.