42, BGP common commands and matters needing attention

1. Routes identified with R: IGP and BGP Learn the same route, but the IGP learns that the ad is smaller, and the route identifies the route that the R,r identity does not put in the routing table, but is still passed to the other neighbors. You can view the routes identified by the R by command show ip BGP rib-failure.

2. Two methods of restarting BGP:

Hard restart: Clear IP bgp * Broken TCP connection (clear IP bgp 2.2.2.2 for a neighbor)

Soft restart: Clear ip bgp soft Continuous TCP connection

3. View routes sent to neighbors

Show ip bgp neighbor 2.2.2.2 adveritsed-routes

4. View routes sent by neighbors

Show ip bgp neighbor 3.3.3.3 received-routes

By default, the above command is not visible, you need to execute the neighbor 3.3.3.3 soft-reconfiguration inbound under the BGP routing process, dividing the memory to save the routes sent by the neighbors.

5, no Auto-summary

When the IGP routes are re-distributed into BGP, they are automatically aggregated, and no auto-summary is performed under the BGP routing process, and the next hop and metric values of the redistribute routes will be consistent with the redistribution before they are distributed. The command is configured by default.

This article is from the "Open Source Hall" blog, please be sure to keep this source http://kaiyuandiantang.blog.51cto.com/10699754/1721112

42, BGP common commands and matters needing attention