Traffic Engineering Extension for OSPFv3

1
Traffic Engineering Extension for OSPFv3

• draft-ishiguro-ospf-ospfv3-traffic-01.txt
• Kunihiro Ishiguro
• ltkunihiro_at_ipinfusion.comgt

2
OSPFv3

• Weve learned many things from OSPFv2 experience
• Topology information and IP address information
  is completely separated
• New LS Type can be added with flooding scope
  without using Opaque LSA
• Router-LSA specifies link information with
  Neighbor Interface ID and Neighbor Router ID
• Now is the time to get benefit from clean OSPFv3
  protocol framework

3
Intra-Area-TE LSA

• New LS type Intra-Area-TE LSA is added
• LSA function code is 10
• Flooding scope is Area Scoping
• U-bit is set to 1. So even the router does not
  understand TE LSA, the LSA should be flooded
• Intra-Area-TE LS Type is 0xa00a
• LS ID is Interface ID of the link

4
OSPFv3 TE TLV

• OSPFv3 TE refers OSPFv2 TE
  (draft-katz-yeung-ospf-traffic) as a basement TLV
  document
• New Link TLVs sub-TLVs are added

5
Router Address TLV

• In OSPFv3, Router Address TLV should be a Router
  ID of the advertising router
• The address is not a real IP address
• The address is not a reachable IP address

6
Link TLV

• Link TLV describes a single link
• Almost OSPFv2 Link ID sub-TLV can be applicable
  to OSPFv3
• Link ID sub-TLV is not enough to identify a link
  in OSPFv3
• Instead of Link ID sub-TLV, Neighbor ID sub-TLV
  is introduced
• IPv6 address sub-TLVs are added for IPv6

7
OSPFv3 Router-LSA
8
Neighbor ID sub-TLV

• Neighbor ID sub-TLV Neighbor Interface ID
• Neighbor
  Router ID
• Neighbor Interface ID is Interface ID of the
  neighbor router (or the attached links DR for
  Type 2 interfaces).
• Neighbor ID is Router ID of the neighbor router
  (or the attached links DR for Type 2
  interfaces).

9
IPv6 address sub-TLVs

• Local Interface IPv6 address sub-TLV
• Remote Interface IPv6 address sub-TLV
• Link-local IPv6 address should not be advertised.