User`s guide

98 XSR User’s Guide
Configuring NAT Examples Chapter 5
Configuring IP
2 The first packet the XSR receives from host 10.1.1.1 causes the
router to check its NAT table.
3 The XSR replaces the inside local source address of 10.1.1.1 with the
global IP address 200.20.2.1 and forwards the packet.
4 Host 172.20.2.1 receives the packet and responds to IP address
200.20.2.1.
5 The XSR receives the packet with the inside global destination IP
address 200.20.2.1, it looks in the table, and translates the
destination address to the inside local destination address 10.1.1.1.
Then it forwards the packet to 10.1.1.1.
Configuring Static Translation
Only one command is required to configure NAT because static NAT is
interface independent. Optionally, you can configure multiple entries in
the static translation table with the
ip nat source static command.
XSR(config)#ip nat source static local-ip global-ip F Sets the
static translation
Network Address and Port Translation
The following example configures inside source address translation with
overload (NAPT) on the XSR, as shown in Figure 12.