Your network is multihomed to two ISPs. The BGP sessions are established; however, the ISP peers are not receiving any routes.
Which two statements are correct about troubleshooting your configuration? (Choose two.)
Your network is multihomed to two ISPs. The BGP sessions are established; however, the ISP peers are not receiving any routes.
Which two statements are correct about troubleshooting your configuration? (Choose two.)
To troubleshoot why ISP peers are not receiving any routes in a multihomed BGP configuration, it is crucial to verify that the BGP routes are active in your routing table because BGP only advertises routes that are in the BGP routing table, which are typically also present in the main routing table. Additionally, you must verify the export policies on your router since the export policies determine which routes are sent to BGP peers. Incorrect export policies can result in routes not being advertised to the peers.
Obvious.
B. Verify that the BGP routes are active in your routing table. C. Verify the export policies on your router.
B. Verify that the BGP routes are active in your routing table. When using BGP, if the routes are not active in your routing table, then they cannot be advertised to peers. BGP only advertises routes that are in the BGP routing table, which are typically also present in the main routing table. If the routes you expect to be advertised are not present in these tables, this could be the cause of the problem. C. Verify the export policies on your router. Export policies in BGP determine which routes are sent to BGP peers. If the export policies are incorrect, some or all routes may not be advertised to the peers. Verifying these policies can help ensure that the expected routes are being advertised.
BC is correct
B and C are correct -- route needs to be active before being sent upstream.