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BGP actual network configuration

2022-07-07 12:26:00 【Miracle_ ze】

One 、 The experiment purpose

A preliminary understanding BGP Basic configuration

Two 、 Experimental topics

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3、 ... and 、 The topology

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Four 、 Experimental configuration

One 、 To configure IP And loopback

PC1

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PC2

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PC3

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PC4

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PC5

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R1

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R2

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R3

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R4

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R5

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Two .AS2 Of IGP To configure , For internal use OSPF Connect

R2

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R3

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R4

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Result example

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3、 ... and 、 Start on all routers BGP And make announcements respectively , And right AS2 Internal IBGP When forwarding, the next hop is your own modification

1. Because the loopback interface is used as EBGP To build neighbors , So we need to modify the relationship between neighbors TTL value , modify ebgp-max-hop by 2
2. The present BGP Environmental Science , Not good mainly because the next jump can't reach ;
because AS-BY-AS Lead to , A routing message is in IBGP When the neighbors pass , Its attribute is not numbered by default ; Eventually, it often leads to the next hop unreachable ;

R1

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R2

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R3

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R4

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R5

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Four 、 Loopback static configuration

R1

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R2

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R4

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R5

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5、 ... and 、 see bgp Neighbor table and routing table

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6、 ... and 、 View results 【pc1 As an example 】

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5、 ... and 、 Summary of the experiment

The operation of the experiment is simple and there is no problem , The only problem I have is AS There is no configuration between loopback and next hop . There is no problem in the experiment after solving .

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https://yzsam.com/2022/02/202202130618062401.html