【CCNP 4-2】Explaining EBGP and IBGP.ppt

SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 SPOTO IT人才培训机构 www.SPOTO.net 以伙伴关系帮助客户成功，帮助员工成功，帮助合作伙伴成功。 Explaining EBGP and IBGP SPOTO KMS Peers = Neighbors A “BGP peer,” also known as a “BGP neighbor,” is a specific term that is used for BGP speakers that have established a neighbor relationship. Any two routers that have formed a TCP connection to exchange BGP routing information are called BGP peers or BGP neighbors. External BGP When BGP is running between neighbors that belong to different autonomous systems, it is called EBGP.AS号不同叫ebgp EBGP neighbors, by default, need to be directly connected.ebgp关系要求直连（默认情况下TTL=1） Internal BGP When BGP is running between neighbors within the same AS, it is called IBGP.一样的的AS号 IBGp 每台路由器只能属于一个AS The neighbors do not have to be directly connected.默认TTL=255 IBGP in a Transit AS (ISP) Redistributing BGP into an IGP (OSPF in this example) is not recommended. Instead, run IBGP on all routers. 路由黑洞 全部建立bgp 重分布进ospf（不建议。BGP路由条目太多） 中转AS中的IBGP IBGP in a NonTransit AS By default, routes learned via IBGP are never propagated to other IBGP peers, so they need full-mesh IBGP.必须建立全互联 Routing Issues If BGP Not on in All Routers in Transit Path Router C will drop the packet to network . Router C is not running IBGP; therefore, it has not