L2TP 中 LAC 之间无法互通 - V2EX
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cp19890714
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L2TP 中 LAC 之间无法互通

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  •   cp19890714 2022-03-12 09:13:06 +08:00 1405 次点击
    这是一个创建于 1311 天前的主题,其中的信息可能已经有所发展或是发生改变。

    L2TP 中 LAC 之间无法互通

    需求

    家庭 MAC 访问公司路由器下的设备.

    问题:在 LNS 和 LAC 都配置了静态路由,依然无效。

    当前配置

    • 公司路由器(192.168.123.1)通过 L2TP 连接到云服务器 CentOS(192.168.2.8)上搭建的 L2TP Server(192.168.18.1), 得到 LAC1(192.168.18.100)
    • 家庭 MAC(192.168.124.2)也通过 L2TP 连接到云服务器 CentOS(192.168.2.8)上搭建的 L2TP Server(192.168.18.1),得到 LAC2(192.168.18.101)

    • LNS 配置路由如下
    Destination Gateway Genmask Flags Metric Ref Use Iface default gateway 0.0.0.0 UG 100 0 0 eth0 192.168.2.0 0.0.0.0 255.255.255.0 U 100 0 0 eth0 192.168.18.100 0.0.0.0 255.255.255.255 UH 0 0 0 ppp1 192.168.18.101 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.123.0 192.168.18.100 255.255.255.0 UG 0 0 0 ppp1 192.168.124.0 192.168.18.101 255.255.255.0 UG 0 0 0 ppp0 
    • LAC1 配置路由如下
    route add -net 192.168.2.0/24 dev ppp5 route add -net 192.168.18.0/24 dev ppp5 
    • LAC2 流量全部走 L2TP

    当前问题

    • LNS 可以 ping 通 LAC1 子网, 但无法 ping 通 LAC2 子网. 在 LNS 服务器中执行以下命令
    [root@centos7-test-01 ~]# ping 192.168.123.1 PING 192.168.123.1 (192.168.123.1) 56(84) bytes of data. 64 bytes from 192.168.123.1: icmp_seq=1 ttl=64 time=7.56 ms 64 bytes from 192.168.123.1: icmp_seq=2 ttl=64 time=8.29 ms 64 bytes from 192.168.123.1: icmp_seq=3 ttl=64 time=7.79 ms [root@centos7-test-01 ~]# ping 192.168.124.1 PING 192.168.124.1 (192.168.124.1) 56(84) bytes of data. 
    • LAC2 ping 不通 LAC1
    目前尚无回复
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