Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide
Chapter 6 IKE Configuration Commands
3Com Corporation
6-18
Parameter
ip-address: IP address of the local GW in IKE negotiation.
Description
Use the local-address command to configure the IP address of the local GW in IKE
negotiation.
Use the undo local-address command to delete the IP address of the local GW.
Normally, you do not need to configure the local-address command, unless you want
to specify a special address for the local GW.
Example
# Set the IP address of the local GW to 1.1.1.1.
[Router-ike-peer-xhy] local-address 1.1.1.1
6.1.21 nat traversal
Syntax
nat traversal
undo nat traversal
View
IKE-peer view
Parameter
None
Description
Use the nat traversal command to configure the NAT traversal function of IKE/IPSec.
Use the undo nat traversal command to disable the NAT traversal function of
IKE/IPSec.
This command fits for the application that the NAT GW functionality is included in the
VPN tunnel constructed by IKE/IPSec.
To save IP address space, ISPs often deploy NAT gateways on public networks so that
private IP addresses can be allocated to users. The likelihood thus exists that at one
end of an IPSec/IKE tunnel is a public address and at the other end is a private one. To
set up the tunnel in this case, you must configure NAT traversal at both private network
side and public network side.
Example
# Enable the NAT traversal function.