192 
# Verify that the DS-Lite NAT444 configuration is correct. 
[Router] display nat outbound 
NAT outbound information: 
  Totally 1 NAT outbound rules. 
  Interface: GigabitEthernet2/0/1 
    DS-Lite B4 ACL: 2100         Address group: 0      Port-preserved: N 
    NO-PAT: N         Reversible: N 
    Config status: Active 
# Verify that the DS-Lite NAT444 configuration takes effect by checking the port block assignment. 
[Router] display nat statistics 
  Total session entries: 0 
  Total EIM entries: 0 
  Total inbound NO-PAT entries: 0 
  Total outbound NO-PAT entries: 0 
  Total static port block entries: 0 
  Total dynamic port block entries: 430 
  Active static port block entries: 0 
  Active dynamic port block entries: 1 
# Verify that a NAT444 mapping has been created for the DS-Lite host. 
[Router] display nat port-block dynamic ds-lite-b4 
Local VPN     DS-Lite B4 addr  Global IP        Port block   Connections 
---           1::1             20.1.1.11        1024-1323    1 
Total entries found: 1 
NAT444 gateway unified with BRAS device configuration 
example 
The following matrix shows the feature and hardware compatibility: 
 
Hardware 
NAT444 gateway and BRAS device 
unification compatibility 
MSR954(JH296A/JH297A/JH298A/JH299A/JH373A) No 
MSR958(JH300A/JH301A) No 
MSR1002-4/1003-8S No 
MSR2003 Yes 
MSR2004-24/2004-48 Yes 
MSR3012/3024/3044/3064 Yes 
MSR4060/4080 Yes 
 
Network requirements 
As shown in Figure 77, the host, a PPPoE client, is connected to the Internet through the router. The 
router acts as the BRAS device and NAT444 gateway. Configure PPPoE server and NAT444 on the 
router to meet the following requirements: 
•  The PPPoE server cooperates with the RADIUS server to authenticate the host by using CHAP, 
and assigns a private IP address to the host.