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Softwire mesh MIB draft-cui-softwire-mesh-mib

Softwire mesh MIB draft-cui-softwire-mesh-mib. Peng Wu Tsinghua University. Outline. Background Structure of softwire mesh MIB Subtree swmInfo swmVIfInfo swmNLRINHInfo swmBGPNeighInfo Discussion. Background. The WG completes RFC4925/ RFC5565 for softwire mesh

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Softwire mesh MIB draft-cui-softwire-mesh-mib

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  1. Softwire mesh MIBdraft-cui-softwire-mesh-mib Peng Wu Tsinghua University

  2. Outline • Background • Structure of softwire mesh MIB • Subtree • swmInfo • swmVIfInfo • swmNLRINHInfo • swmBGPNeighInfo • Discussion

  3. Background • The WG completes RFC4925/ RFC5565 for softwire mesh • Supported by Huawei,Bitway… • IPv6 transition requirement in China • China’s Next Generation Internet(CNGI): 4over6 mesh deployment in CERNET2 • A large number of PEs/client networks • Management requirement

  4. Management requirement • The experience of CNGI mesh deployment • Monitor the status of PEs’ mesh functions • Keep track of availability of the mesh • When broken, analyze information like BGP connectivity, NLRI-NH to find what & where is the problem • Collect each PE’s traffic information • See the usage statistics, find the bottleneck, etc. • Manage a large number of PEs • Produced by different manufacturers • Configured & managed by different campus networks • Unified management is indeed necessary

  5. Position of softwire mesh MIB • swmMIB ::= {transmission xxx}

  6. Subtree of swmMIB • swmInfo: Basic information about softwire • swmVIfInfo: Information about tunnel • swmNLRINHInfo: Information about (E-IP NLRI,I-IP NH) routes • swmBGPNeighInfo: Information about mesh neighbors • swmConformance

  7. swmInfo ::= {swmMIB 1} • Softwire mesh basic information • swmState • Whether the mesh function hasbeen triggered or not • Judged by both BGP function status(MP capability negotiation & routes advertising) and tunnel function status. • swmLastChange • The value of sysUpTime when the swmState changes. • Anything more?

  8. swmVIfInfo ::= {swmMIB 2} • Softwire mesh virtual interface information • swmVIfTunnelTable, swm4over6VIfTable, swm6over4VIfTable • swmVIfTunnelTable • Display supported tunnels(& configure tunnel parameters) • How do we manage parameters of different types of tunnels in one table? • IP-IP(none), GRE(key), L2TPv3(session id & cookie) , MPLS, IPsec… • RFC 5512 defines a TLV format for only GRE & L2TPv3, should we follow that? Tunnel parameters

  9. swmVIfInfo ::= {swmMIB 2} Cont.1 • swm4over6VIfTable(one entry per established tunnel) • Display information on IPv4-over-IPv6 traffic statistics • Configure & display MTU size (path MTU discovery?) • swm6over4VIfTable • Similar to swm4over6VIfTable

  10. swmVIfInfo ::= {swmMIB 2} Cont.2 Another method to organize • Sort by different tunnel type(take GRE as an example) • greSupport: whether the router support GRE encapsulation way • greInfo: parameter about GRE • gre4over6VIfTable: information about IPv4-over-IPv6 traffic statistics • gre6over4VIfTable: information about IPv6-over-IPv4 traffic statistics

  11. swmNLRINHInfo ::= {swmMIB 3} • swm4over6NLRINHTable • Display theNLRI4-NH6 information • Refer to RFC 5549 • Configurable? • swm6over4NLRINHTable • Display (and configure?) theNLRI6-NH4 information

  12. swmBGPNeighInfo ::= {swmMIB 4} • Softwire mesh BGP neighbor information • swm4over6BGPNeighTable • 4over6 BGP neighbor address • Information of negotiated tunnels(type & parameters) with each neighbor • swm6over4BGPNeighTable • 6over4 BGP neighbor address • Information of negotiated tunnels with each neighbor

  13. Discussion • Collaboration welcomed. Please jump in if you’re interested. • Suggestions? Anything we miss?

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