大约半小时前开始 AT&T 到中国联通的链路炸了

ping 任何联通的 IP 丢包率均在 60% 左右，traceroute 显示丢包发生在

7 12.249.203.14 (12.249.203.14) 15.512 ms 15.434 ms 15.944 ms
8 219.158.98.149 (219.158.98.149) 220.400 ms * *

这两跳之间，显然是联通的骨干网炸了。

根据 ATT 的 routing server，他们的 BGP 路由条目已经 2 星期没有变化了，可以排除 flap 的可能性。

rviews@route-server.ip.att.net> show route 120.132.34.xx 

inet.0: 665059 destinations, 10639760 routes (665059 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

120.132.32.0/22    *[BGP/170] 2w0d 13:23:13, localpref 100, from 12.122.127.66
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:21:50, localpref 100, from 12.122.83.238
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:21:12, localpref 100, from 12.122.120.7
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:21:00, localpref 100, from 12.122.124.12
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:20:21, localpref 100, from 12.122.124.67
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:20:36, localpref 100, from 12.122.124.138
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:21:24, localpref 100, from 12.122.125.6
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:21:08, localpref 100, from 12.122.125.44
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:18:11, localpref 100, from 12.122.125.106
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:21:37, localpref 100, from 12.122.125.132
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:22:42, localpref 100, from 12.122.125.165
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:21:13, localpref 100, from 12.122.125.224
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:20:33, localpref 100, from 12.122.126.9
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:21:19, localpref 100, from 12.122.126.64
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:20:14, localpref 100, from 12.122.126.232
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0
                    [BGP/170] 2w0d 13:19:10, localpref 100, from 12.122.159.217
                      AS path: 7018 4837 4808 I, validation-state: unknown
                    > to 12.0.1.1 via em0.0

linkupmylife

2017-12-29 16:41:08 +08:00

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