R3303-HP HSR6800 Routers Layer 3 - IP Services Configuration Guide

102
Ste
p
Command
1. Enter system view.
system-view
2. Enter interface view.
interface interface-type interface-number
3. Configure No-PAT by associating an
ACL with an IP address pool on the
outbound interface for translating
only IP addresses.
nat outbound [ acl-number ] address-group group-number
[ vpn-instance vpn-instance-name ] no-pat [ track vrrp
virtual-router-id ]
Configuring NAPT
With a specific ACL associated with an address pool or interface address, NAPT translates the source
address of a packet permitted by the ACL into an IP address of the address pool or the interface address,
with using the port information.
To configure NAPT:
Ste
p
Command
1. Enter system view.
system-view
2. Enter interface view.
interface interface-type interface-number
3. Configure NAPT by associating an
ACL with an IP address pool on the
outbound interface for translating
both IP address and port number.
nat outbound [ acl-number ] address-group group-number
[ vpn-instance vpn-instance-name ] [ track vrrp virtual-router-id ]
Configuring an internal server
To configure an internal server, you need to map an external IP address and port number to the internal
server. This is done through executing the nat server command on an interface.
Internal server configurations include external network information (external IP address global-address
and external port number global-port), internal network information (internal IP address local-address
and internal port number local-port), and internal server protocol type. According to different
internal/external network information configurations, internal servers can be classified into common
internal servers and load sharing internal servers.
Both internal servers and their external IP addresses can support MPLS L3VPN. If an internal server
belongs to an MPLS L3VPN, you also need to specify the vpn-instance-name argument. Without this
argument specified, the internal server does not belong to any VPN.
Configuring a common internal server
After mapping the internal IP address/port number (local-address and local-port) of a common internal
server to an external IP address/port number (global-address and global-port), hosts in external
networks can access the server located in the internal network.
The device supports using the interface address as the external address of an internal server, which is the
Easy IP feature. If you want to specify an interface, the interface must be a loopback interface and must
already exist.