经典MPLS三层组网,内网1------PE1(15.2.76.本地)-----P-----PE2(15.2.72.邻居)------内网2
vpn实例路由表通过BGP能学习到,但是无法互通
1、可根据云图排查,vpn实例路由已经学习到,后面就查公网标签学习情况
标签分发有问题,只有自身的标签;
2、查看LDP邻居,状态为Non Existent(TCP连接建立不成功),配置是没有问题的
#
interface MP-group2/0/1
description xxxx
ip address 15.3.x.x 255.255.255.252
mpls enable
mpls ldp enable
qos apply policy qos outbound
#
3、收集debug mpls ldp all信息
*Oct 31 14:39:58:577 2019 H3C LDP/7/SESSION: Created a new session (15.2.72.邻居:0): Local transport address (15.2.74.x), peer transport address (15.2.72.邻居).
*Oct 31 14:39:58:577 2019 H3C LDP/7/DISCOVERY: Send hello message, interface MP2/0/1, message content:
01 00 00 14 00 00 02 fb 04 00 00 04 00 0f 00 00
04 01 00 04 0f 02 4a 86
*Oct 31 14:39:58:578 2019 H3C LDP/7/SESSION: Session (15.2.72.邻居:0) received event (0x0), state: 0.
*Oct 31 14:39:58:578 2019 H3C LDP/7/SOCKET: Created a new socket (48) on the active LSR.
*Oct 31 14:39:58:578 2019 H3C LDP/7/SESSION: Opened a TCP connection (socket 48) to transportaddr: 15.2.72.邻居 success.
*Oct 31 14:39:58:784 2019 H3C LDP/7/DISCOVERY: Send hello message, interface MP2/0/1, message content:
01 00 00 14 00 00 02 fc 04 00 00 04 00 0f 00 00
04 01 00 04 0f 02 4a 86
Local transport address (15.2.74.134)——协商的本地地址15.2.74.x,而当前是15.2.76.x ,了解到这个是之前地址规划错误配置的lsr-id,后续未重启设备或者ldp进程
reset mpls ldp重启标签分发进程恢复正常
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