H3C Technologies H3C SecBlade LB Cards - Manual (Page 38)

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Item Description
Carry Source IP in HTTP
Header
Whether to enable adding of client source address information in HTTP
headers.
After you select HTTP Take Source IP, you must select By X-Forwarded-For
Header or By User-Defined Header.
IMPORTANT:
• This configuration is meaningful only when the server provides services
based on the client source address.
• When you select SIP as the persistence method, do not enable this
configuration item. Otherwise, load balancing cannot work properly.
• When you select RTSP URL as the real service group method, do not enable
this configuration item. Otherwise, load balancing cannot work properly.
• If you select the box before Carry Source IP in HTTP Header, reduce the TCP
MSS value (maximum segment size for TCP) for the interfaces on the network
path between the LB product and the client. Otherwise, TCP fragments might
be too large to be processed by the client. H3C recommends that you reduce
the interface TCP MSS by 34 bytes when you select By X-Forwarded-For
Header or by 50 bytes when you select By User-Defined Header. When For
more information about TCP MSS configuration, see Network Management
Configuration Guide or System Maintenance Configuration Guide.
Enable Virtual Service
Whether to enable a virtual service after it is configured.
This option is not available if you do not select a real service group.
Displaying server load balancing statistics
1. Select Load Balance > Server Load Balance > IPv4 from the navigation tree.
2. Click Statistics.
Statistics of all the virtual services of server load balancing are displayed on the page, including
total number of connections, average of active connections/peak of active connections,
connection average rate/peak rate, number of forwarded/ignored packets in the inbound
direction, and number of forwarded packets in the outbound direction. If you click the link of a
virtual service name, the statistics of all the real services of the virtual service will be displayed on
the lower part of the page, including total number of connections, average of active
connections/peak of active connections, connection average rate/peak rate, packets received,
and packets sent, as shown in Figure 22 .