有时需要能查一些BGP的AS PATH信息，有一个“Route Views Project”项目。可以直接登录到一些zebra上直接查一下。
bgp的命令可以参考quagga的手册，简单的比如：
1. 查看某个网段的bgp信息
show ip bgp 8.8.8.8/24
route-views.isc.routeviews.org> show ip bgp 8.8.8.8/24
BGP routing table entry for 8.8.8.0/24
Paths: (11 available, best #11, table Default-IP-Routing-Table)
Not advertised to any peer
4436 209 15169
198.32.176.13 from 198.32.176.13 (69.22.143.244)
Origin IGP, metric 13, localpref 100, valid, external
Community: 209:209 209:888 209:40822 4436:999 4436:31413
Last update: Mon Apr 7 12:08:01 2014
14361 15169
198.32.176.10 from 198.32.176.10 (66.36.224.11)
Origin IGP, localpref 100, valid, external
Last update: Thu Apr 3 19:28:25 2014
19151 15169
198.32.176.164 from 198.32.176.164 (66.186.193.1)
Origin IGP, metric 0, localpref 100, valid, external
Community: 19151:3000 19151:63003 19151:65040
Last update: Fri Mar 21 21:18:48 2014
2914 15169
198.32.176.14 from 198.32.176.14 (129.250.0.5)
Origin IGP, metric 4, localpref 100, valid, external
Community: 2914:420 2914:1008 2914:2000 2914:3000
Last update: Fri Mar 21 21:16:04 2014
- 从as-path中过滤特定as的路由
show ip bgp regexp 15169$
route-views.isc.routeviews.org> show ip bgp regexp 15169$
BGP table version is 0, local router ID is 198.32.176.5
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
* 1.0.0.0/24 198.32.176.13 13 0 4436 209 15169 i
* 198.32.176.10 0 14361 15169 i
* 198.32.176.164 0 0 19151 15169 i
* 198.32.176.14 94 0 2914 15169 i
* 198.32.176.20 0 6939 15169 i
* 198.32.176.177 0 7575 15169 i
* 198.32.176.24 0 2497 15169 i
* 198.32.176.95 0 0 8218 15169 i
* 198.32.176.206 0 5580 15169 i
* 198.32.176.134 0 0 4826 15169 i
*> 198.32.176.207 0 36351 15169 i
* 1.1.1.0/24 198.32.176.13 13 0 4436 209 15169 i
* 198.32.176.10 0 14361 15169 i
* 198.32.176.164 0 0 19151 15169 i
* 198.32.176.14 94 0 2914 15169 i
* 198.32.176.20 0 6939 15169 i
* 198.32.176.177 0 7575 15169 i
* 198.32.176.24 0 2497 15169 i
* 198.32.176.95 0 0 8218 15169 i
* 198.32.176.206 0 5580 15169 i
* 198.32.176.134 0 0 4826 15169 i
*> 198.32.176.207 0 36351 15169 i
* 1.2.3.0/24 198.32.176.13 13 0 4436 209 15169 i
* 198.32.176.10 0 14361 15169 i
* 198.32.176.164 0 0 19151 15169 i
* 198.32.176.14 94 0 2914 15169 i
* 198.32.176.20 0 6939 15169 i
* 198.32.176.177 0 7575 15169 i
* 198.32.176.24 0 2497 15169 i
* 198.32.176.95 0 0 8218 15169 i
* 198.32.176.206 0 5580 15169 i
* 198.32.176.134 0 0 4826 15169 i
*> 198.32.176.207 0 36351 15169 i
* 8.8.4.0/24 198.32.176.13 13 0 4436 209 15169 i
* 198.32.176.10 0 14361 15169 i
* 198.32.176.164 0 0 19151 15169 i
* 198.32.176.14 4 0 2914 15169 i
* 198.32.176.20 0 6939 15169 i
* 198.32.176.177 0 7575 15169 i
* 198.32.176.24 0 2497 15169 i
* 198.32.176.95 0 0 8218 15169 i
* 198.32.176.206 0 5580 15169 i
* 198.32.176.207 0 36351 15169 i
*> 198.32.176.134 0 0 4826 15169 i
* 8.8.8.0/24 198.32.176.13 13 0 4436 209 15169 i
* 198.32.176.10 0 14361 15169 i
* 198.32.176.164 0 0 19151 15169 i
* 198.32.176.14 4 0 2914 15169 i
* 198.32.176.20 0 6939 15169 i
* 198.32.176.177 0 7575 15169 i
* 198.32.176.24 0 2497 15169 i
* 198.32.176.95 0 0 8218 15169 i
* 198.32.176.206 0 5580 15169 i
* 198.32.176.207 0 36351 15169 i
*> 198.32.176.134 0 0 4826 15169 i