3com S7906E 설치 설명서

 

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  Share-group: 239.4.4.4 

  MTunnel address: 1.1.1.4 

A share-MDT cannot be established. PIM adjacencies cannot be established between the same VPN 

instance’s interfaces on different PE devices.  

z 

On different PE devices, the same share-group must be configured for the same VPN instance. A 

share-group address uniquely identifies a share-MDT. If different share-group addresses have 

been configured for a VPN instance on different PE devices, a share-MDT cannot be established 

for that VPN instance on different PE devices.  

z 

The same PIM mode must run on all the interfaces of the same VPN instance on different PE 

devices and on all the interfaces of the P router; otherwise, a share-MDT cannot be correctly built 

for the VPN instance and PIM adjacencies cannot be established between the VPN instance on the 

local PE device and the same VPN instance on the remote PE device.  

z 

BGP and unicast route configurations are prerequisites for the MTI interface to obtain an IP 

address automatically, and PIM is enabled on at least one interface of the VPN instance so that 

PIM can be enabled on the MTI interface. PIM adjacencies can be established between the same 

VPN instance on different PE devices only after the MTI interface obtains an IP address and gets 

PIM enabled.  

1)  Check the share-group address: Use the display multicast-domain vpn-instance share-group 

command to verify that the same share-group address has been configured for the same VPN 

instance on different PE devices.  

2)  Check the running PIM mode: Use the display pim interface command to verify that PIM is 

enabled on at least one interface of the same VPN on different PE devices and the same PIM mode 

is running on all the interfaces of the same VPN instance on different PE devices and on all the 

interfaces of the P router.  

3)  Check unicast routes. Use the display ip routing-table command to verify that a unicast route 

exists from the VPN instance on the local PE device to the same VPN instance on each remote PE 

device.  

4)  Check BGP peer configuration: Use the display bgp peer command to verify that the BGP peer 

connections have been correctly configured. 

A VPN instance cannot create an MVRF correctly.