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POS Access Service Configuration 99
POS access does not support flow control, therefore, the interface should be
configured with the flow-control none command.
5 Configure POS Multi-Application Map
POS multi-application is a kind of POS access function, which sends the packets
from a POS terminal device to different POS applications according to the packet
destination addresses. For TCP/IP connection, an application is marked by two
parts, IP address and port number, that is, the different applications may have
different IP addresses or share the same IP address but have different port
numbers. The packets can be sent to different applications according to the
destination address number. When the destination address number has a
corresponding entry in the mapping table, the packet will be sent to the
application corresponding to the entry. If there is no entry matching the
destination address, the packet will be sent to the default application.
Please perform the following configuration in system view.
Table 76 Configure POS multi-application mapping table
By default, no POS multi-application mapping table is configured.
At present, the 3Com Router series support up to 32 applications.
6 Bind the Source Address of TCP Connection
When several POS terminal devices multiplex one TCP connection to set up
relations with the application of the host, for the sake of security, it is necessary to
hide the true IP address of the up TCP connection in the access service, and set
another IP address for the source address instead. At the same time, to perform
the backup of the link, the terminal access server provides the function of binding
the source address of the TCP connection.
The principle of binding the source address of the TCP connection is to configure
an IP address on the other interface that is not used on the router (Dial-up
interface is recommended), the unnumbered IP address is the address of the up
TCP connection on the terminal access server. Using the
undo pos-server
source-ip
command, you can remove the binding of TCP source address and the
IP address of the TCP connection will be restored to the real IP address of the
original physical interface.
Please perform the following configurations in system view.
Table 77 Bind the source address of TCP connection
By default, the source address of the TCP connection is not bound.
Please note that this command can be applied only in the application in the TCP
connection, and the application state is that the TCP connection has not been
Operation Command
Configure the POS multi-application mapping table pos-server map { des-code |
default } app-number
Delete the POS multi-application mapping table undo pos-server map {
des-code | default }
Operation Command
Bind the source address of TCP connection pos-server source-ip app-number
ip-address
Remove the binding of the source address of
the TCP connection
undo pos-server source-ip
app-number