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    • 1. 发明申请
    • AUTOMATION FALLBACK TO P2P LSPS FOR MLDP BUILT MULTIPOINT-TREES
    • 自动拒绝P2P LSPS,用于MLDP建立多点聚合
    • WO2008016372A3
    • 2008-03-20
    • PCT/US2006042408
    • 2006-10-31
    • CISCO TECH INCBOERS ARJENWIJNANDS IJSBRANDMEYLOR JOHN S
    • BOERS ARJENWIJNANDS IJSBRANDMEYLOR JOHN S
    • H04L12/56H04L12/18
    • H04L45/00H04L12/1836H04L45/16H04L45/50
    • Point-to-point (P2P) label switched path (LSP) (16) to transmit multicast data packets partially through multiprotocol label switched (MPLS) network (12) when one or more label switched routers (LSRs) (P4) of MPLS are not multicast label distribution protocol (mLDP) enabled. P2P LSP (16) can be used to transmit multicast data packets to head end (Pl) of point-to-multipoint (P2MP) LSP (14). The P2MP LSP (14) can be used to transmit multicast data packets through MPLS network (12) to intended receivers (H2, H3) external to MPLS network. When configuring P2MP LSP (14), mLDP enabled LSR (Pl) receives first message from non-mLDP enabled MPLS core router (P4) in response to sending label mapping message to non-mLDP enabled MPLS core router (P4). In response, directed LDP session is created between mLDP enabled LSR (Pl) and edge LSR (PEl) in one embodiment in response to receiving first message from MPLS enabled core router (P2).
    • 在MPLS的一个或多个标签交换路由器(P4)(P4)上,点对点(P2P)标签交换路径(LSP)(16)部分通过多协议标签交换(MPLS)网络(12)传输多播数据包 不启用多播标签分发协议(mLDP)。 P2P LSP(16)可以用于将组播数据包发送到点对多点(P2MP)LSP(14)的头端(P1)。 P2MP LSP(14)可以用于通过MPLS网络(12)将组播数据包传输到MPLS网络外部的预定接收者(H2,H3)。 在配置P2MP LSP(14)时,启用了mLDP的LSR(P1)响应于向不使能UDPDP的MPLS核心路由器(P4)发送标签映射消息,从非启用DNMP的MPLS核心路由器(P4)接收第一条消息。 作为响应,在一个实施例中响应于从启用MPLS的核心路由器(P2)接收到第一消息,在启用了MLDP的LSR(P1)和边缘LSR(PE1)之间创建了定向LDP会话。
    • 2. 发明申请
    • AUTOMATION FALLBACK TO P2P LSPS FOR MLDP BUILT MULTIPOINT-TREES
    • 自动拒绝P2P LSPS,用于MLDP建立多点聚合
    • WO2008016372A2
    • 2008-02-07
    • PCT/US2006/042408
    • 2006-10-31
    • CISCO TECHNOLOGY, INC.BOERS, ArjenWIJNANDS, IjsbrandMEYLOR, John, S.
    • BOERS, ArjenWIJNANDS, IjsbrandMEYLOR, John, S.
    • H04L12/56H04L12/18
    • H04L45/00H04L12/1836H04L45/16H04L45/50
    • A method of using a point-to-point (P2P) label switched path (LSP) to transmit multicast data packets partially through a multiprotocol label switched (MPLS) network when one or more label switched routers (LSRs) of the MPLS are not multicast label distribution protocol (mLDP) enabled. The P2P LSP can be used to transmit multicast data packets to the head end of a point-to-multipoint (P2MP) LSP created with mLDP enabled LSRs. The P2MP LSP can be used to transmit the multicast data packets through the MPLS network to intended receivers that are external to the MPLS network. When configuring the P2MP LSP, an mLDP enabled LSR receives a first message from a non-mLDP enabled MPLS core router in response to sending a label mapping message to the non-mLDP enabled MPLS core router. In response, a directed LDP session is created between the mLDP enabled LSR and an edge LSR in one embodiment in response to receiving the first message from an MPLS enabled core router. The directed LDP session can be used to transmit a label mapping message to an ingress LSR.
    • 当MPLS的一个或多个标签交换路由器(LSR)不是多播时,使用点对点(P2P)标签交换路径(LSP)部分地通过多协议标签交换(MPLS)网络传输组播数据分组的方法 标签分发协议(mLDP)启用。 P2P LSP可用于将组播数据包发送到使用启用了mLDP的LSR创建的点对多点(P2MP)LSP的头端。 P2MP LSP可以用于通过MPLS网络将组播数据包传输到MPLS网络外部的预期接收者。 在配置P2MP LSP时,响应向不启用DNDP的MPLS核心路由器发送标签映射消息,启用了MLDP的LSR从非启用了DNDP的MPLS核心路由器收到第一条消息。 作为响应,响应于从启用MPLS的核心路由器接收到第一消息,在一个实施例中,在启用了MLDP的LSR和边缘LSR之间创建了定向LDP会话。 定向LDP会话可用于向入口LSR发送标签映射消息。