Clearing LSN Sessions
You can remove any unwanted or inefficient LSN sessions from the NetScaler appliance. The appliance immediately releases resources (such as NAT IP address, port, and memory) allocated for these sessions, making the resources available for new sessions. The appliance also drops all the subsequent packets related to these removed sessions. You can remove all or selected LSN sessions from the NetScaler appliance.
Related information
To clear all LSN sessions by using the command line interface
At the command prompt, type:
flush lsn session
show lsn session
To clear selective LSN sessions by using the command line interface
At the command prompt, type:
flush lsn session [-clientname <string>] [-network <ip_addr> [-netmask <netmask>] [-td <positive_integer>]] [-natIP <ip_addr> [-natPort <port>]]
show lsn session
Example
Clear all LSN sessions existing on a NetScaler
flush lsn session
Done
Clear all LSN sessions related to LSN client entity LSN-CLIENT-1
flush lsn session -clientname LSN-CLIENT-1
Done
Clear all LSN sessions related to a subscriber network (192.0.2.0) of LSN client entity LSN-CLIENT-2 belonging to traffic domain 100
flush lsn session -clientname LSN-CLIENT-2 –network 192.0.2.0 –netmask 255.255.255.0 –td 100
Done
To clear all LSN sessions by using the configuration utility
Navigate to System > Large Scale NAT > Sessions, and click Flush Sessions.
Parameter Descriptions (of commands listed in the CLI procedure)
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flush lsn session
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clientnameName of the LSN Client entity. Maximum Length: 127
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networkIP address or network address of subscriber(s).
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netmaskSubnet mask for the IP address specified by the network parameter.Default value: 255.255.255.255
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tdTraffic domain ID of the LSN client entity.Default value: 0Minimum value: 0Maximum value: 4094
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natIPMapped NAT IP address used in LSN sessions.
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natPortMapped NAT port used in the LSN sessions.
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