Command Reference Guide
3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 11 NAT Configuration Commands
3Com Corporation
11-11
Note:
Overlapping address pools and temporary address pools come in pairs. When
converting an overlapping address to a temporary address, the following conventions
are followed:
z Temporary address = Start address of the temporary address pool + (overlapping
address – start address of the overlapping address pool)
z Overlapping address = Start address of the overlapping address pool + (temporary
address – start address of the temporary address pool)
Example
# Configure an overlapping address pool map entry, setting address pool pair number
to 0, start address of the overlapping address pool to 171.69.100.0, start address of the
temporary address pool to 192.168.0.0, and subnet mask to 24.
[3Com] nat overlapaddress 0 171.69.100.0 192.168.0.0 address-mask 24
11.1.11 nat server
Syntax
nat server [ acl-number ] [ vpn-instance vpn-instance-name ] protocol pro-type
global global-addr global-port1 global-port2 inside host-addr1 host-addr2 host-port
nat server [ acl-number ] [ vpn-instance vpn-instance-name ] protocol pro-type
global global-addr [ global-port ] inside host-addr [ host-port ]
undo nat server [ acl-number ] [ vpn-
instance vpn-instance-name ] protocol pro-type
global global-addr global-port1 global-port2 inside host-addr1 host-addr2 host-port
undo nat server [ acl-number ] [ vpn-instance vpn-instance-name ] protocol pro-type
global global-addr [ global-port ] inside host-addr [ host-port ]
View
Interface view
Parameter
acl-number: ACL in the range 2000 to 3999. When configured with an ACL, the nat
server command allows the NAT server to translate addresses for packets sent by
internal servers only when the source and destination addressses in the packets are
permitted by the ACL.
vpn-instance-name: The virtual route forwarding instance of the VPN the internal server
belongs to. If the parameter is not configured, it represents that the internal server
belongs to an ordinary private network, other than one MPLS VPN.