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IPv6/OSPFv3 default-route origination not learned between Extreme Summit and Brocade MLX

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TitleIPv6/OSPFv3 default-route origination not learned between Extreme Summit and Brocade MLX
Question
Why would an Extreme switch not learn the default IPv6 route from OSPFv3 3rd-party vendor neighbor?

 
Environment
  • All EXOS Versions
  • Extreme BD & Summit Platforms
Answer

As per the current ospfv3 implementation, EXOS does not support forwarding addresses received from OSPFv3 neighbor.  However, this will be available in newer ospfv3 stack which targeted on EXOS 16.2.1. When forwarding addresses are supported, then the protocol will install a route only if it can reach the forwarding address using another OSPF route.

Additional notes
The behavior is shown via the command show ospfv3 lsdb detail lstype as-external.  It shows the correct Advertising Router and Forwarding Address that should be learned. 
 

"show ospfv3 lsdb detail lstype as-external"

AS External LSA 

LS Age: 20
LS Type: AS-external-LSA
Link State ID: 0.0.0.1
Advertising Router: 2.2.2.2 
LS Sequence Number: 0x800000ed
Checksum: 0x7601
Length: 44 

Metric Type: 2 
Prefix: ::/0
Prefix Options: 0x0 (-|-|-|-) 

Forwarding Address: 2001:12f0:0:fd::6d 

Then when we perform the iproute command, we see no entry.
#:sh iproute ipv6 ::/0 

Ori Destination Mtr Flags Duration Gateway Interface 

No entry is found.

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