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No Neighbor at Source Address: The number of OSPF packets dropped because the sender is not
an existing neighbor or the sender’s IP address does not match the previously recorded IP address
for that neighbor. NOTE: Does not apply to Hellos.
Invalid OSPF Packet Type The number of OSPF packets discarded because the packet type field in
the OSPF header is not a known type.
10.4.1.10 show ipv6 ospf neighbor
This command displays information about OSPF neighbors. If you do not specify a neighbor IP address,
the output displays summary information in a table. If you specify an interface or tunnel, only the
information for that interface or tunnel displays. The <ipaddr> is the IP address of the neighbor, and when
you specify this, detailed information about the neighbor displays. The information below only displays if
OSPF is enabled and the interface has a neighbor.
Syntax
show ipv6 ospf neighbor [interface {<slot/port> | tunnel <0-7>}] [<ipaddr>]
<ipaddr> - IP address of the neighbor.
<slot/port> - Interface number.
Default Setting
None
Command Mode
Privileged Exec
User Exec
Display Messages
If you do not specify an IP address, a table with the following columns displays for all neighbors or the
neighbor associated with the interface that you specify:
Router ID: Shows the 4-digit dotted-decimal number of the neighbor router.
Priority: Displays the OSPF priority for the specified interface. The priority of an interface is a priority
integer from 0 to 255. A value of '0' indicates that the router is not eligible to become the designated
router on this network.
Intf ID: Shows the interface ID of the neighbor.
Interface: Shows the interface of the local router in slot/port format.
State: Shows the state of the neighboring routers. Possible values are:
• Down - initial state of the neighbor conversation - no recent information has been received
from the neighbor.
• Attempt - no recent information has been received from the neighbor but a more concerted
effort should be made to contact the neighbor.
• Init - an Hello packet has recently been seen from the neighbor, but bidirectional
communication has not yet been established.
• 2 way - communication between the two routers is bidirectional.