路由反射器解决路由黑洞问题
路由反射器解决路由黑洞问题
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- 路由黑洞的产生
- 路由黑洞的解决办法
- 路由反射器解决黑洞问题
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- 基本配置
- 配置反射器前查看路由
- 配置路由反射器
- 配置反射器后查看路由
路由黑洞的产生
根据BGP建立邻居的规则，只要TCP可达便可建立邻居系。如下图所示：
- AR2、AR3、AR4之间运行了OSPF，并宣告了23.1.1.0、34.1.1.0网段
- AR2与AR4可以跨跳建立iBGP邻居关系，而在AR3上不配置BGP。
- 在AR1的注入8.8.8.8的路由，AR4注入9.9.9.9的路由
<ar1>dis bgp rou
BGP Local router ID is 1.1.1.1
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Total Number of Routes: 2
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 8.8.8.8/32 0.0.0.0 0 0 i
*> 9.9.9.9/32 12.1.1.2 0 200i
--------------------------------------------------------------------------------------------------
<ar2>
Please check whether system data has been changed, and save data in time
Configuration console time out, please press any key to log on
<ar2>dis bgp rou
BGP Local router ID is 2.2.2.2
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Total Number of Routes: 2
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 8.8.8.8/32 12.1.1.1 0 0 100i
*>i 9.9.9.9/32 4.4.4.4 0 100 0 i
-------------------------------------------------------------------------------------------------------
<ar4>dis bgp rou
BGP Local router ID is 34.1.1.4
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Total Number of Routes: 2
Network NextHop MED LocPrf PrefVal Path/Ogn
*>i 8.8.8.8/32 2.2.2.2 0 100 0 100i
*> 9.9.9.9/32 0.0
