Panasonic NN46240-710 - Manual (Page 144)

4 MPLS L2VPN troubleshooting
Nortel Secure Router 8000 Series
_________ Troubleshooting - VPN
Figure 4-18 IP address configuration diagram
• Use static MAP. Configure the map ip peer-ce-address broadcast command or the map
ip default broadcast command in the PVC view of the ATM interface at both ends of the
AC.
For example:
[PE2] interface atm1/0/0
[PE2-Atm1/0/0] pvc 100/200
[PE2-atm-pvc-Atm1/0/0-100/200]
[PE2-atm-pvc-Atm1/0/0-100/200]
[CE2] interface atm1/0/0
[CE2-Atm1/0/0] pvc 100/200
[CE2-atm-pvc-Atm1/0/0-100/200] map ip 10.1.1.1 broadcast
[CE2-atm-pvc-Atm1/0/0-100/200] ip address 10.1.1.2 255.255.255.0
map ip 10.1.1.2 broadcast
ip address 10.1.1.1 255.255.255.0
Troubleshooting procedure
Step 1 Check that the IP address of CE at both ends is on the same network segment.
Step 2 Run the display local-ce mac command on PE and run the display arp command on CE to
check whether ARP entries of the Ethernet link establish successfully.
Step 3 If ARP entries are not set up successfully, configure an IP address and MAC address for the AC
interface of Ethernet type and enable MAC broadcasting on PE. For the ATM link, use INARP
to generate MAP dynamically or use static MAP.
—End
Summary
In IP-interworking applications, if the VC is Up but the ping between CEs fails, the cause is
often configuration error.
You must perform configuration according to the link type, so that ARP entries can generate
correctly.
4-34 Nortel Networks Inc. Issue 5.3 (30 March2009)