User's Manual

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Users Manual of GPL-8000
(4) Host B receives the message through inside global IP destination address (DA) 2.2.2.2 and responds to
host 1.1.1.1.
(5) When the routing switch receives message of the inside global IP address, it takes the inside global
address as a keyword to query the NAT table, translates the address to the inside local address of host
1.1.1.1, and forwards message to host 1.1.1.1.
(6) Host 1.1.1.1 receives the message and continues the session. The routing switch is to perform step 2
and step 5 for each message.
1. Configuring static transfer
Run the following commands in global configuration mode to configure static inside source address transfer:
Run… To…
ip nat inside source staticlocal-ip
global-ip
Create a static transfer between inside local
address and inside global address.
interfacetype number
Specify the inside interface.
ip nat inside
Label the interface as one to connect the
inside network.
interfacetype number
Specify the outside interface.
ip nat outside
Label the interface as one to connect the
outside network.
The above is the minimum configuration. You can configure multiple inside and outside interfaces.
2. Configuring dynamic transfer
Run the following commands in global configuration mode to configure dynamic inside source address
translation.
Run… To…
ip nat pool name start-ip end-ip
netmask
Define a to-be-allocated global address pool
according to your requirements.
ip access-list standard
access-list-name permit source
[source-mask]
Define a standard access list to permit which
address can be transferred.
ip nat inside source list
access-list-name pool name
Create dynamic source address transfer and
specify the access list that is defined at the
previous step.
interface type number
Specify the inside interface.
ip nat inside
Label the interface as one to connect the
inside network.
interface type number
Specify the outside interface.
ip nat outside
Label the interface as one to connect the
outside network.