如果BFD for Link-bundle没有子会话,则主会话状态为Down,通告给上层应用的状态为Unknown。 如果Eth-Trunk下仅有一个成员接口,其对应的子会话状态为Up,该成员口退出Eth-Trunk,则主会话状态为Down。 主会话的本地标识符使用特殊的标识符分配区间:0x00100000–0x00103fff,不占用原有BFD会话标识符区间。由于主会话不...
BFD for Link-bundle 两台路由设备之间通过Eth-Trunk链路相连,Eth-Trunk链路下有多条成员链路。如果用户要在这两台设备上部署BFD来检测该Eth-Trunk链路上的故障,则可以使用BFD for Link-bundle类型的会话。 普通的BFD单跳会话绑定Eth-Trunk接口,只会创建一个BFD会话,并从Eth-Trunk口中选择一个成员口所在单板作为状...
BFD for Link-bundle类型的会话能够很好的解决这个问题。 如图所示,BFD for Link-bundle会话由一个主会话以及多个子会话组成: 子会话负责独立的检测Eth-Trunk成员链路,并将检测结果上报至主会话,子会话的参数全部继承主会话的配置信息。 主会话负责为Eth-Trunk下每一个成员接口创建一个BFD子会话,以及汇总子会话的检测...
2、BFD for Link-bundle:(ETH-TRUNK为三层口场景) 背景及原理与BFD for Perlink一样; BFD for Link-bundle会话由一个主会话以及多个子会话组成,•主会话负责为Eth-Trunk下每一个成员接口创建一个BFD子会话,以及汇总子会话的检测结果并对Eth-Trunk链路的状态做出最终判断;只要有一个子会话的状态为Up,主会话状...
- Receive BFD packets from bundle via internal path. At any time, Tx packets for a particular BFD session will be on one single bundle member link. Rx packets, on the other hand, can be received on any bundle member link. When LC NPU doesn't receive BFD packets in ...
The routers on either end of the bundle are connected back-to-back without a Layer 2 switch in between. For a BFD session to start, any one of the following configurations or states are present on the bundle member: Link Aggregation Control Protocol (LACP...
BFD for IPv6 static routes, OSPFv3, and BGP are supported by the client BFD for IPv6 static routes that have link-local address as the next-hop is not supported For BFD on bundle member links, only a single BFD session for each bun...
If the number of active members is below minimum, bundle is immediately brought down, bringing down the IGP peering. The fast-detect and destination are mandatory for bringing the session up. The nbr-unconfig option was created to allow disabling BFD per member link without interrupting the ...
· Serial interfaces, POS interfaces, serial interfaces created for E1/E3/T1/T3 channels, MP-group interfaces, member ports of an MP-group interface, HDLC link bundle interfaces, and member ports of an HDLC link bundle interface. Restrictions and guidelines The echo function does not take effe...
> with TAC and confirmed. It's broken for bundle interfaces (gives an > error, won't take the config), broken for BGP (takes the config > without error but doesn't work), and broken if VRRP is in use. It > will only work on a single physical link on that platform. We ...