首先,EBGP的Administrative Distance默认是20。而IBGP的Administrative Distance默认是200。 其次,EBGP和IBGP在传递路由的时候,对next-hop的处理不同。EBGP会修改路由的next-hop,再转发;而IBGP默认不会修改next-hop,直接将路由转发。举个例子:R4有一条路由要发出,路由传递到R2,R5,路由的下一跳(next-hop)是R4。 R2...
EBGP和IBGP都遵循BGP协议,它们的工作流程,处理方式,甚至核心程序,都是一样的。区别在于一些细节参数,默认行为不同。 首先,EBGP的Administrative Distance默认是20。而IBGP的Administrative Distance默认是200。 其次,EBGP和IBGP在传递路由的时候,对next-hop的处理不同。EBGP会修改路由的next-hop,再转发;而IBGP默认不会修...
首先,EBGP的Administrative Distance默认是20。而IBGP的Administrative Distance默认是200。 其次,EBGP和IBGP在传递路由的时候,对next-hop的处理不同。EBGP会修改路由的next-hop,再转发;而IBGP默认不会修改next-hop,直接将路由转发。举个例子:R4有一条路由要发出,路由传递到R2,R5,路由的下一跳(next-hop)是R4。
从技术细节看，EBGP与IBGP遵循相同的BGP协议，其工作流程、处理方式及核心程序一致，主要差异体现在一些细节参数和默认行为上。例如，EBGP默认的Administrative Distance为20，而IBGP为200。在路由传递过程中，EBGP修改路由的next-hop，而IBGP则默认不修改。在路由转发行为上，IBGP学习到的路由不能传递给其他IBG...
4. EBGP routes have administrative distance of 20, whereas IBGP has 200. 5. Next hop remains unchanged when route is advertised to IBGP peer; however, it is changed when it is advertised to EBGP peer by default. This default behavior of IBGP can be changed by the command “neighbor x.x...
Lastly, something to think about...iBGP has an administrative distance of 200, while eBGP has an administratve distance of only 20. When R1 and R2 advertise their routes to each other, they are going to reject each other's advertisements IF they have comparable eBGP-learned prefixes in their...
redistribute connected route-map FILTER neighbor 1.1.1.1 remote-as 5500 neighbor 1.1.1.1 ebgp-multihop 2 neighbor 1.1.1.1 update-source Loopback5 neighbor 3.3.3.3 remote-as 6500 neighbor 3.3.3.3 update-source Loopback6 neighbor 10.1.45.1 remote-as 5500 no auto-summary 0 Helpful Reply mahes...
neighbor 1.1.1.1 ebgp-multihop 2 neighbor 1.1.1.1 update-source Loopback5 neighbor 3.3.3.3 remote-as 6500 neighbor 3.3.3.3 update-source Loopback6 neighbor 10.1.45.1 remote-as 5500 no auto-summary 0 Helpful Reply mahesh18 Level 6 In response to Reza Sharifi 04-07-2012 05:56 PM...