BGP路由黑洞问题同步IBGP全接.docx
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BGP路由黑洞问题同步IBGP全接.docx
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BGP路由黑洞问题同步IBGP全接
26、BGP路由黑洞问题,同步、IBGP全接
1、实验拓扑图
(一)
2、组网要求
3、基本连通性调试
四、实验关键配置
RT1:
routerospf1
router-id10.0.0.1
redistributeconnectedmetric1000metric-type1subnets
passive-interfacedefault
nopassive-interfaceSerial0/0
network10.0.0.10.0.0.0area0
network10.0.1.40.0.0.3area0
default-informationoriginatealwaysmetric2000metric-type1
!
routerbgp65000
nosynchronization
bgplog-neighbor-changes
network10.0.0.0mask255.255.0.0
network10.3.0.0mask255.255.0.0
neighbor10.0.0.2remote-as65000
neighbor10.0.0.2update-sourceLoopback0
neighbor10.0.0.2next-hop-self
neighbor10.0.15.2remote-as65001
noauto-summary
!
iproute10.0.0.0255.255.0.0Null0
iproute10.3.0.0255.255.0.0Null0
!
RT2:
routerospf1
router-id10.0.0.2
redistributeconnectedmetric1000metric-type1subnets
passive-interfacedefault
nopassive-interfaceSerial0/0
network10.0.0.20.0.0.0area0
network10.0.1.80.0.0.3area0
default-informationoriginatealwaysmetric2000metric-type1
!
routerbgp65000
nosynchronization
network10.0.0.0mask255.255.0.0
network10.3.0.0mask255.255.0.0
neighbor10.0.0.1remote-as65000
neighbor10.0.0.1update-sourceLoopback0
neighbor10.0.0.1next-hop-self
neighbor10.0.26.2remote-as65002
noauto-summary
!
iproute10.0.0.0255.255.0.0Null0
iproute10.3.0.0255.255.0.0Null0
!
RT3:
routerospf1
router-id10.0.0.3
passive-interfacedefault
nopassive-interfaceSerial0/0
nopassive-interfaceFastEthernet1/0
network10.0.0.30.0.0.0area0
network10.0.1.00.0.0.3area0
network10.0.1.40.0.0.3area0
network10.3.3.00.0.0.255area0
RT4:
routerospf1
router-id10.0.0.4
log-adjacency-changes
network10.0.0.40.0.0.0area0
network10.0.1.00.0.0.3area0
network10.0.1.80.0.0.3area0
network10.3.4.00.0.0.255area0
!
RT5:
routerbgp65001
nosynchronization
network10.5.0.0mask255.255.0.0
neighbor10.0.15.1remote-as65000
noauto-summary
!
iproute10.5.0.0255.255.0.0Null0
!
RT6:
routerbgp65002
nosynchronization
network10.6.0.0mask255.255.0.0
neighbor10.0.26.1remote-as65000
noauto-summary
!
iproute10.6.0.0255.255.0.0Null0
!
五、实验连通性及其调试:
Ping测试:
10.6.6.1去往10.5.5.1..................
由于rt3、rt4没有运行BGP,学习不到as外的路由。
下面我们来看看怎么丢包的吧!
一、实验拓扑图
(二)
二、组网需求:
三、实验关键配置
RT1:
routerbgp65000
synchronization
bgplog-neighbor-changes
network10.0.0.0mask255.255.0.0
network10.3.0.0mask255.255.0.0
neighbor10.0.0.2remote-as65000
neighbor10.0.0.2update-sourceLoopback0
neighbor10.0.0.2next-hop-self
neighbor10.0.15.2remote-as65001
noauto-summary
!
routerospf1
redistributebgp65000metric4000subnets
!
RT2:
routerbgp65000
synchronization
bgplog-neighbor-changes
network10.0.0.0mask255.255.0.0
network10.3.0.0mask255.255.0.0
neighbor10.0.0.1remote-as65000
neighbor10.0.0.1update-sourceLoopback0
neighbor10.0.0.1next-hop-self
neighbor10.0.26.2remote-as65002
noauto-summary
!
routerospf1
redistributebgp65000metric4000subnets
!
开启了同步
四、BGP连通性及调试
学习来自IBGP邻居的路由在进入IGP路由表或被宣告给BGP对等体之前,必须首先通过IGP来知晓该路由;
1、在没有redistributebgp65000metric4000subnets情况下:
2、redistributebgp65000metric4000subnets情况下:
Ping测试:
10.6.6.1去往10.5.5.1.。
。
。
。
。
。
。
。
。
。
。
一、实验拓扑图
(一)
二、组网要求:
三、基本连通性调试
4、实验关键配置
RT1:
redistributebgp65000
routerbgp65000
nosynchronization
bgplog-neighbor-changes
network10.0.0.0mask255.255.0.0
network10.3.0.0mask255.255.0.0
neighborfuck65000peer-group
neighborfuck65000remote-as65000
neighborfuck65000update-sourceLoopback0
neighborfuck65000next-hop-self
neighbor10.0.0.2peer-groupfuck65000
neighbor10.0.0.3peer-groupfuck65000
neighbor10.0.0.4peer-groupfuck65000
neighbor10.0.15.2remote-as65001
noauto-summary
RT2:
redistributebgp65000
routerbgp65000
nosynchronization
bgplog-neighbor-changes
network10.0.0.0mask255.255.0.0
network10.3.0.0mask255.255.0.0
neighborfuck65000peer-group
neighborfuck65000remote-as65000
neighborfuck65000update-sourceLoopback0
neighborfuck65000next-hop-self
neighbor10.0.0.1peer-groupfuck65000
neighbor10.0.0.3peer-groupfuck65000
neighbor10.0.0.4peer-groupfuck65000
neighbor10.0.26.2remote-as65002
noauto-summary
RT3:
routerbgp65000
nosynchronization
bgplog-neighbor-changes
neighborfuck65000peer-group
neighborfuck65000remote-as65000
neighborfuck65000update-sourceLoopback0
neighborfuck65000next-hop-self
neighbor10.0.0.1peer-groupfuck65000
neighbor10.0.0.2peer-groupfuck65000
neighbor10.0.0.4peer-groupfuck65000
noauto-summary
RT4:
routerbgp65000
nosynchronization
bgplog-neighbor-changes
neighborfuck65000peer-group
neighborfuck65000remote-as65000
neighborfuck65000update-sourceLoopback0
neighborfuck65000next-hop-self
neighbor10.0.0.1peer-groupfuck65000
neighbor10.0.0.2peer-groupfuck65000
neighbor10.0.0.3peer-groupfuck65000
noauto-summary
RT5:
routerbgp65001
nosynchronization
bgplog-neighbor-changes
network10.5.0.0mask255.255.0.0
neighbor10.0.15.1remote-as65000
noauto-summary
RT6:
routerbgp65002
nosynchronization
bgplog-neighbor-changes
network10.6.0.0mask255.255.0.0
neighbor10.0.26.1remote-as65000
noauto-summary
5、连通性及其调试
Ping10.6.6.1source10.5.5.1
Ping10.5.5.1source10.6.6.1
实验总结
在此次实验之中遇到了黑洞路由问题,以及同步,还有IBPG全连结,而解决黑洞问题可以是BGP同步,通过重发布的方法解决,也可以采用IBGP全连结,每个设备上都运行BGP。
在本次实验中,没有遇到什么大的困难,主要是配置太多,自己小心一点就ok,
实验不难,关键是要明白为什么要同步?
(目的很简单:
就是为了解决不必要的BGP路由黑洞咯)什么条件才能同步?
(学习来自IBGP邻居的路由在进入IGP路由表或被宣告给BGP对等体之前,必须首先通过IGP来知晓该路由;
)
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- 关 键 词:
- BGP 路由 黑洞 问题 同步 IBGP