Border Gateway Protocol IPv4 (BGPv4) | 223Local-as is prepended before the route-map to give an impression that update passed thru a router in AS200 before it reached Router B.BGP4 Management Information Base (MIB)The FORCE10-BGP4-V2-MIB enhances FTOS BGP Management Information Base (MIB) support withmany new SNMP objects and notifications (traps) defined in the draft-ietf-idr-bgp4-mibv2-05. To see theseenhancements, download the MIB from the Dell Force10 website, www.force10networks.com.Important Points to Remember• In f10BgpM2AsPathTableEntry table, f10BgpM2AsPathSegmentIndex, andf10BgpM2AsPathElementIndex are used to retrieve a particular ASN from the AS path. These indicesare assigned to the AS segments and individual ASN in each segment starting from 0. For example, anAS path list of {200 300 400} 500 consists of two segments: {200 300 400} with segment index 0 and500 with segment index 1. ASN 200, 300, and 400 are be assigned 0, 1, and 2 element indices in thatorder.• Unknown optional transitive attributes within a given path attribute (PA) are assigned indices in order.These indices correspond to f10BgpM2PathAttrUnknownIndex field in thef10BgpM2PathAttrUnknownEntry table.• Negotiation of multiple instances of the same capability is not supported.F10BgpM2PeerCapAnnouncedIndex and f10BgpM2PeerCapReceivedIndex are ignored in the peercapability lookup.• Inbound BGP soft-reconfiguration must be configured on a peer forf10BgpM2PrefixInPrefixesRejected to display the number of prefixes filtered due to a policy. If BGPsoft-reconfig is not enabled, the denied prefixes are not accounted for.• F10BgpM2AdjRibsOutRoute stores the pointer to the NLRI in the peer's Adj-Rib-Out.• PA Index (f10BgpM2PathAttrIndex field in various tables) is used to retrieve specific attributes fromthe PA table. The Next-Hop, RR Cluster-list, Originator ID attributes are not stored in the PA Tableand cannot be retrieved using the index passed in. These fields are not populated inf10BgpM2PathAttrEntry, f10BgpM2PathAttrClusterEntry, f10BgpM2PathAttrOriginatorIdEntry.• F10BgpM2PathAttrUnknownEntry contains the optional-transitive attribute details.• Query for f10BgpM2LinkLocalNextHopEntry returns default value for Link-local Next-hop.• RFC 2545 and the f10BgpM2Rfc2545Group are not supported.• An SNMP query will display up to 89 AS paths. A query for a larger AS path count will display as"…" at the end of the output.• SNMP set for BGP is not supported. For all peer configuration tables(f10BgpM2PeerConfigurationGroup, f10BgpM2PeerRouteReflectorCfgGroup, andf10BgpM2PeerAsConfederationCfgGroup), an SNMP set operation will return an error. Only SNMPqueries are supported. In addition, the f10BgpM2CfgPeerError, f10BgpM2CfgPeerBgpPeerEntry, andf10BgpM2CfgPeerRowEntryStatus fields are to hold the SNMP set status and are ignored in SNMPquery.Note: See the Dell Force10 iSupport webpage for the Force10-BGP4-V2-MIB and other MIBdocumentation.
