Troubleshooting Md Vpn - HP FlexNetwork 7500 Series Configuration Manual

[CEb2-LoopBack1] ip address 3.3.3.3 32
[CEb2-LoopBack1] pim sm
[CEb2-LoopBack1] quit
# Configure Loopback 1 as a C-BSR and a C-RP.
[CEb2] pim
[CEb2-pim] c-bsr 3.3.3.3
[CEb2-pim] c-rp 3.3.3.3
[CEb2-pim] quit
# Configure OSPF.
[CEb2] ospf 1
[CEb2-ospf-1] area 0.0.0.0
[CEb2-ospf-1-area-0.0.0.0] network 3.3.3.3 0.0.0.0
[CEb2-ospf-1-area-0.0.0.0] network 10.11.4.0 0.0.0.255
[CEb2-ospf-1-area-0.0.0.0] network 10.11.8.0 0.0.0.255
[CEb2-ospf-1-area-0.0.0.0] quit
[CEb2-ospf-1] quit
Verifying the configuration
# Display information about local default-groups in VPN instances on PE 1.
[PE1] display multicast-domain default-group local
MD local default-group information:
Group address
239.1.1.1
239.4.4.4
# Display information about local default-groups in VPN instances on PE 4.
[PE4] display multicast-domain default-group local
MD local default-group information:
Group address
239.1.1.1
239.4.4.4

Troubleshooting MD VPN

This section describes common MD VPN problems and how to troubleshoot them.
A default-MDT cannot be established
Symptom
The default-MDT cannot be established. PIM neighboring relationship cannot be established
between PE devices' interfaces that are in the same VPN instance.
Solution
Use the display interface command to examine the MTI interface state and address
1.
encapsulation on the MTI.
Use the display multicast-domain default-group command to verify that the same
2.
default-group address has been configured for the same VPN instance on different PE devices.
Use the display pim interface command to verify the following:
3.
PIM is enabled on at least one interface of the same VPN on different PE devices.
Source address Interface
1.1.1.1 MTunnel0
1.1.1.1 MTunnel1
Source address Interface
1.1.1.4 MTunnel0
1.1.1.4 MTunnel1
VPN instance
a
b
VPN instance
a
b
225