111 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF OSPFv2 MIB for Multi Topology Routing (MTR) Namita Rawat Rashmi Shrivastava David Kushi

222 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF Agenda Introduction MIB Overview Summary References Questions

333 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF Introduction Extends OSPFv2 MIB to support management of OSPF MTR [ ospf-mt-mib-00.txt] ospf-mt-mib-00.txt MTR supports multiple orthogonal routing topologies over a physical topology OSPFv2 MTR extensions defined in standards track i-d [5] OSPF MTR MIB provides management capabilities for OSPFv2 multi-topology extensions Used in conjunction with existing OSPFv2 MIB

444 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF Need for a new TC MTR is a modified version of TOS based routing New Integer index replaces TOS-based index TOSType TC - range (0…30) - 4 bits extracted from IP TOS byte MTID - range (0…127) - independent of IP TOS byte

555 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF New Textual Convention TopologyID ::= TEXTUAL-CONVENTION DISPLAY-HINT "d-0" STATUS current DESCRIPTION "A topology identifier." REFERENCE "OSPF Version 2 Multi-topology routing." SYNTAX Integer32 (0..127)

666 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF Need for New Tables New objects with new syntax and semantics are needed To accommodate the larger MTID range TOSType objects are replaced with TopologyID objects TopologyID object is used as a table index Cannot simply reuse TOS-indexed tables of RFC must replace TOS-indexed tables per SMI

777 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF OSPFv2 MTR MIB Overview Conformance Group - ospfMtGeneralGroup - ospfMtConfigurationGroup - ospfMtAreaGroup - ospfMtAreaTopoGroup - ospfMtStubAreaGroup - ospfMtHostGroup - ospfIfMetricGroup - ospfMtVirtIfMetricGroup - ospfMtAreaAggregateGroup

888 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtGeneralGroup This mandatory group contains the scalar object “ospfMtSupport” used to support discovery of MT capable routers.

999 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF New scalar object ospfMtSupport OBJECT-TYPE SYNTAX TruthValue MAX-ACCESS read-only STATUS current DESCRIPTION "This entity's support for Multi-topology routing…..” Used by applications to determine MT-capable routing.

10 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtConfigurationGroup This optional group contains objects used to associate a topology name with a multi- topology identifier (MTID).

11 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtAreaGroup This mandatory group contains the “ospfMtAreaExclusion” object used to configure an MTR area-specific parameter. - Augments entries in RFC1850 ospfAreaTable.

12 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtAreaTopoGroup This mandatory group contains objects used to collect statistics and configure parameters applicable to a topology within an area.

13 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtStubAreaGroup This mandatory group contains objects used to configure metrics for topologies advertised by a default ABR into a stub area.

14 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtHostGroup This mandatory group contains objects used to configure metrics for topologies associated with attached hosts.

15 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtIfMetricGroup This mandatory group contains objects used to configure metrics for topologies configured on interfaces.

16 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtVirtIfMetricGroup This mandatory group contains objects used to configure metrics for topologies configured on virtual interfaces.

17 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF ospfMtAreaAggregateGroup This mandatory group contains objects used to configure address aggregation for topologies.

18 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF Traps No new traps are introduced. The option mismatch trap defined in RFC1850 will be used to generate trap for MT-bit mismatch.

19 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF Summary OSPF MTR MIB enables management of OSPFv2 entities supporting multi-topology extensions New TC is needed to support MT-ID range New tables indexed on objects with TopologyId syntax are needed (per SMI) OSPF MTR MIB is used in conjunction with existing OSPFv2 MIB

20 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF References [1] Baker, F. and R. Coltun, "OSPF Version 2 Management Information Base", RFC 1850, November [2] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, April [3] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD 58, RFC 2579, April [4] McCloghrie, K., Perkins, D., and J. Schoenwaelder, "Conformance Statements for SMIv2", STD 58, RFC 2580, April [5] Psenak, P., "Multi-Topology (MT) Routing in OSPF", draft-ietf-ospf-mt-06 (work in progress), February [6] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet-Standard Management Framework", RFC 3410, December 2002.

21 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF Questions and Comments Questions/Comments ??

22 © 2006, Cisco Systems, Inc. All rights reserved. OSPF-MTR-MIB-IETF Thanks! Please review the draft Please send your comments to the authors Thank you! ospf-mt-mib-00.txt